ATHLETIC SHOE HAVING CUSTOMIZABLE AIR CHAMBERS
CROSS-REFERENCE OF RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional Patent Application No. 63/517,863, filed on August 4, 2024, titled “ATHLETIC SHOE HAVING CUSTOMIZABLE AIR CHAMBERS” which is incorporated by reference in its entirety for all purposes.
BACKGROUND
[0002] Different sport and fitness activities that involve the feet may favor different regions of the foot to best support the activity. For example, activities such as standing, running and walking place dynamic stresses on different parts of the foot, as well as different contact areas between the plantar and ground, to maintain dynamic balance of an upright or quasi-upright body. As a result, pressure distributions on the plantar may vary greatly depending on the type of activity.
[0003] Modern athletic shoes may have built-in air chambers embedded within the sole that may be designed to cushion the feet. However, the air chambers are static, in that they may be inflated at the time of manufacture and stay at the same state of inflation during the lifetime of the shoe. The static air chambers may be inflated to absorb foot pressure for specific common activities, such as running, walking, or a specific sport such as basketball. However, a pressure distribution for one activity may not be optimal for another. Modern athletic shoes may present an incorrect pressure profile to the user for an unintended activity. Moreover, the pressure profile of the shoe may not accommodate the weight, gait and foot pronation of the user.
BRIEF SUMMARY
[0004] Disclosed herein is a customizable footwear article (e.g., an athletic shoe) comprising a plurality of inflatable air chambers within the sole of the shoe. In at least one embodiment, the disclosed shoe further comprises a plurality of pneumatic ports located on an edge of the sole. In at least one embodiment, the plurality of pneumatic ports is configured to receive a pneumatic connector. In at least one embodiment, the pneumatic connector is attached to a controlled pressure source that is configured to regulate air pressure within individual air chambers of the plurality of inflatable air chambers. The controlled pressure source can be configured to regulate air pressure within each of multiple (or all) of the plurality inflatable air chambers, where the regulation may be the same or different across different inflatable air chambers. For example, a first inflatable air chamber may be inflated by a first amount to a first pressure; a second inflatable air chamber may be inflated by a different second amount to a different second pressure; and a third inflatable air chamber may be deflated by a third amount to a third pressure. When the controlled pressure source regulates air pressure across each of multiple inflatable air chambers, the air pressure may be regulated sequentially or simultaneously across the multiple inflatable air chambers. The controlled pressure source may be portable or stationary.
[0005] In at least one embodiment, the plurality of inflatable air chambers comprises one or more first inflatable air chambers that extends substantially over the forefoot region of the sole (e.g., at least 30%, at least 40%, at least 50%, at least 60%, at least 80% or at least 90% by width and/or at least 30%, at least 40%, at least 50%, at least 60%, at least 80% or at least 90% by length). For example, a single first inflatable air chamber may extend substantially over the forefoot region; or one air chamber may extend partly or substantially over a portion of the forefoot region that is to the left of another air chamber that extends partly or substantially over another portion of the forefoot region. In at least one embodiment, the plurality of inflatable air chambers comprises a second inflatable air chamber that extends substantially within a midfoot (e.g., arch) region of the sole. In at least one embodiment, the plurality of inflatable air chambers comprises a third inflatable air chamber and a fourth inflatable air chamber that extend substantially within a heel region of the sole. In at least one embodiment, the third and fourth inflatable air chambers are laterally adjacent within the heel portion of the sole.
[0006] In at least one embodiment, the plurality of inflatable air chambers further comprises a fifth inflatable air chamber extending along an inboard edge of the sole, and a sixth inflatable air chamber extending along an outboard edge of the sole. In at least one embodiment, the fifth and sixth inflatable air chambers both comprise two inflatable subchambers. In at least one embodiment, a first subchamber of the fifth and sixth inflatable air chambers extend along an inboard and outboard edge, respectively, of the forefoot region of the sole. A second subchamber of the fifth and sixth inflatable air chambers extend along an inboard and outboard edge, respectively, of a heel portion of the sole. In at least one embodiment, the two subchambers of the fifth inflatable air chamber communicate via a first inter-chamber conduit. In at least one embodiment, the two subchambers of the sixth inflatable air chamber communicate via a second inter-chamber conduit.
[0007] In at least one alternate embodiment, the fifth inflatable air chamber extends within the forefoot region of the sole as a single continuous air chamber. In at least one embodiment, the fifth inflatable air chamber extends longitudinally from a toe region to the midfoot (e.g., arch) region of the sole, and extends laterally from the inboard edge to the outboard edge of the forefoot region of the sole.
[0008] In at least one alternate embodiment, the sixth inflatable air chamber extends with the heel region of the sole as a single continuous air chamber. In at least one embodiment the sixth inflatable air chamber extends longitudinally from a rear edge of the heel region of the sole to the midfoot region of the sole. In at least one embodiment, the sixth inflatable air chamber extends laterally from the inboard edge to the outboard edge of the heel region of the sole.
[0009] In at least one embodiment, the fifth inflatable air chamber and the sixth inflatable air chamber protrude through the inboard and outboard edges, respectively, of the sole. The protruding portions of the fifth and sixth inflatable air chambers may provide an aesthetic adornment to the sole of the shoe. In at least one embodiment, the fifth and sixth inflatable air chambers may become visible when a threshold pressure is attained. Each of both of the fifth inflatable air chamber and the sixth inflatable air chamber may extend or protrude inward (towards the body-center side and/or establish contact pressure over one or more regions of the foot. Additionally or alternatively, either or both of the fifth inflatable air chamber and the sixth inflatable air chamber may be configured to be inflated separately from one or more other air chambers. For example, a fifth inflatable air chamber may be inflated separately from the sixth inflatable air chamber or the reverse. It will be appreciated that either or both of the fifth inflatable air chamber and the sixth inflatable air chamber may be partitioned into multiple partitions, where the partitions are configured such that each partition can be inflated and/or deflated independently of the other partition(s). [0010] While six inflatable air chambers are disclosed, fewer or more inflatable air chambers may be included in the disclosed shoe. The disclosed number of six inflatable air chambers may be an optimal number of air chambers to provide optimal control of foot position and comfort. In at least one embodiment, the first, second, third and fourth inflatable air chambers are substantially within an upper portion of the sole, whereas the fifth and sixth inflatable air chambers are within a lower portion of the sole. For example, the first through fourth inflatable air chambers extend just below the insole surface, whereas the fifth and sixth inflatable air chambers extend in a mid-level plane of the sole. The first through fourth inflatable air chambers may be stacked over the fifth and sixth inflatable air chambers in vertically separated portions of the sole.
[0011] In at least one embodiment, individual air chambers of the plurality of inflatable air chambers comprise a suitable elastomer, such as a silicone rubber. In at least one embodiment, individual air chambers of the plurality of inflatable air chambers may be independently inflated and deflated by an external pumping and venting device. Such a pumping and venting device may be configured to supply and withdraw air to and from the plurality of inflatable air chambers.
[0012] In at least one embodiment, individual air chambers of the plurality of inflatable air chambers are coupled to individual ports of the plurality of pneumatic ports located on an edge of the sole. In at least one embodiment, the plurality of pneumatic ports is located on a rear edge of the sole. In at least one embodiment, individual inflatable air chambers are coupled to individual pneumatic ports via a plurality of conduits embedded within the sole. The conduits may comprise a portion of tubing, such as silicone tubing.
[0013] In at least one embodiment, the disclosed shoe may be accompanied by a portable controlled pressure source configured to control air pressure within the plurality of inflatable air chambers. In at least one embodiment, the portable controlled pressure source may be coupled to the disclosed shoe through the plurality of pneumatic ports. The portable controlled pressure source may comprise a pneumatic connector, whereby the pneumatic connector comprises a plurality of nozzles that is configured to insert into the plurality of pneumatic ports on the sole. The pneumatic ports may be configured to provide a tight seal when engaging the plurality of nozzles, allowing filling of individual inflatable air chambers to substantial pressures (e.g., up to 5 bar).
[0014] In at least one embodiment, the portable controlled pressure source comprises an air compressor (e.g., a pneumatic pump), a reservoir coupled to the air compressor, a plurality of pressure regulators coupled to the reservoir, a plurality of valves coupled to the pressure regulators, and a pneumatic connector, such as the pneumatic connector described above, coupled to the plurality of valves. In at least one embodiment, the pneumatic connector may be coupled to a pneumatic cable, whereby individual nozzles of the plurality of nozzles may be coupled to individual tubes within the pneumatic cable. In at least one embodiment, the individual tubes of the pneumatic cable may be coupled to individual valves of the plurality of valves, whereby the individual valves are controlled (e.g., open and closed) by an electronic valve driver circuit.
[0015] In at least one embodiment, the electronic valve driver circuit is electrically coupled to a controller unit. In at least one embodiment, the controller unit may be a central processing unit (CPU) of a microcomputer board (e.g., a single board computer) or an embedded microprocessor. In at least one embodiment, the controller unit may be coupled to a plurality of pressure regulators to govern the pressures within individual inflatable air chambers. The pressure limits of individual pressure regulators within the plurality of pressure regulators may be read and set by the controller unit. In at least one embodiment, compressed air contained within the reservoir may be released to the inflatable air chambers through one or more of the valves.
[0016] In at least one embodiment, the controller unit may be coupled to an interface, such as a touch screen or via a user application that may communicate with the controller unit via one or more networks. In at least one embodiment, the interface may be configured to receive user activity choices and custom pressure profiles. In at least one embodiment, the interface may display user statistics, such as gait, distance, speed, continuous weight, heart rate variability, respiratory rate and/or force analysis. By selection of activity (e.g., walking or running), or through a custom pressure profile choice, pressures within individual inflatable air chambers may be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The material described herein is illustrated by way of example and not by way of limitation in the accompanying figures. For simplicity and clarity of illustration, elements illustrated in the figures are not necessarily drawn to scale and exact locations. For example, the dimensions of some elements may be exaggerated relative to other elements for clarity. Also, various physical features may be represented in their simplified “ideal” forms and geometries for clarity of discussion, but it is nevertheless to be understood that practical implementations may only approximate the illustrated ideals. For example, smooth surfaces and square intersections may be drawn in disregard of finite roughness, corner-rounding, and imperfect angular intersections. Further, where considered appropriate, reference labels have been repeated among the figures to indicate corresponding or analogous elements.
[0018] Fig. 1A illustrates an exploded 3D view of the disclosed shoe, in accordance with at least one embodiment.
[0019] Fig. IB illustrates an assembled profile view of a first embodiment of the disclosed shoe, in accordance with at least one embodiment.
[0020] Fig. 1C illustrates a plan view of inflatable air chambers showing relative positions and dimensions of inflatable air chambers, in accordance with at least one embodiment.
[0021] Fig. ID illustrates a plan view of a sole assembly of the disclosed shoe, in accordance with at least one embodiment.
[0022] Fig. IE illustrates a profile view of the disclosed shoe, showing aesthetic inflatable air chambers collapsed, in accordance with at least one embodiment.
[0023] Fig. IF illustrates a profile view of the disclosed shoe, showing aesthetic inflatable air chambers inflated, in accordance with at least one embodiment.
[0024] Fig. 2A illustrates an exploded 3D view of a second embodiment of the disclosed shoe, in accordance with at least one embodiment.
[0025] Fig. 2B illustrates a plan view of inflatable air chambers showing relative positions and dimensions of inflatable air chambers in the second embodiment of the disclosed shoe, in accordance with at least one embodiment. [0026] Fig. 2C illustrates a plan view of a sole assembly of the second embodiment of the disclosed shoe, in accordance with at least one embodiment.
[0027] Fig. 2D illustrates an assembled profile view of the second embodiment of the disclosed shoe, in accordance with at least one embodiment.
[0028] Fig. 2E illustrates a 3D view of the disclosed shoe showing aesthetic inflatable air chambers collapsed, in accordance with at least one embodiment.
[0029] Fig. 2F illustrates a 3D view of the disclosed shoe showing aesthetic inflatable air chambers inflated, in accordance with at least one embodiment.
[0030] Fig. 3A illustrates a 3D view of a controlled pressure source in accordance with at least one embodiment.
[0031] Fig. 3B illustrates a 3D view of the controlled pressure source shown in Fig. 3A pneumatically coupled to the disclosed shoe in accordance with at least one embodiment.
[0032] Fig. 4 illustrates a block diagram of a mechatronic system for the controlled pressure source shown in Figs. 3A and 3B, in accordance with at least one embodiment.
[0033] Fig. 5 illustrates an exemplary user display in accordance with at least one embodiment.
[0034] Fig. 6 illustrates a smart shoe showing embedded pressure sensors and integrated circuits, in accordance with at least one embodiment.
[0035] Fig. 7 illustrates a flow chart for an exemplary method for operating a controlled pressure source and athletic shoe in accordance with at least one embodiment.
DETAILED DESCRIPTION
[0036] Unless otherwise specified in the explicit context of their use, the terms “substantially equal,” “about equal,” and “approximately equal” may generally mean that there is no more than incidental variation between two things so described. In the art, such variation is typically no more than +/- 10% of the referred value. [0037] Fig. 1 A illustrates an exploded 3D view of shoe 100, in accordance with at least one embodiment. In at least one embodiment, shoe 100 comprises upper 102, sole 104, forefoot inflatable air chamber 106, midfoot inflatable air chamber 108 and heel inflatable air chambers 110 and 112. In at least one embodiment, inflatable air chambers 106-112 are incorporated into sole 104. In at least one embodiment, inflatable air chambers 106-112 extend in succession longitudinally along sole 104, between heel portion 114, midfoot portion 115 and forefoot portion 116. In at least one embodiment, inflatable air chambers 106-112 extend laterally between outer edge 120 and inner edge 122 of sole 104. In at least one embodiment, inflatable air chambers 106-112 may not protrude through outer and inner edges 120 and 122, respectively. In at least one embodiment, inflatable air chambers 106-112 are entirely contained within sole 104, having no parts that protrude through outer and inner edges 120 and 122, respectively. In at least one embodiment, inflatable air chambers 106-112 are located substantially within a layer below insole surface 118 of sole 104.
[0038] In at least one embodiment, inflatable air chamber 106 has substantially a shape of the forefoot portion 116, extending longitudinally and laterally from the toe 123 to midfoot portion 115. Inflatable air chamber 108 extends both longitudinally and laterally over midfoot portion 115. Inflatable air chambers 110 and 112 longitudinally and laterally extend over heel portion 114 from midfoot portion 115 to rear edge 121 of sole 104. In the view of Fig. 1A, shoe 100 is configured to fit the left foot.
[0039] In at least one embodiment, shoe 100 comprises inflatable air chamber 124 extending along outer edge 120 (behind), and inflatable air chamber 126 extending along inner edge 122 (in front). In at least one embodiment, inflatable air chamber 124 comprises subchamber 128 and subchamber 130, whereas inflatable air chamber 126 comprises subchamber 132 and subchamber 134. In at least one embodiment, subchambers 128 and 130 communicate by interconnection via conduit 136. Likewise, in at least one embodiment, subchambers 132 and 134 are interconnected by conduit 138.
[0040] In at least one embodiment, inflatable air chamber 124 and inflatable air chamber 126 are located within a layer of sole 104 below inflatable air chambers 106-112. In at least one embodiment, an edge of inflatable air chamber 124 protrudes through outer edge 120 of sole 104, enabling a portion of inflatable air chamber 124 to be visible when a threshold pressure is reached. Below the threshold pressure, inflatable air chamber 124 is contained within sole 104 and may not protrude through edges of sole 104. In at least one embodiment, an edge of inflatable air chamber 126 protrudes through inner edge 122 of sole 104, likewise enabling a portion of inflatable air chamber 126 to be visible. In at least one embodiment, inflatable air chambers 124 and 126 have a narrow width w in relation to their lengths. By protruding through inner and outer edges of sole 104, inflatable air chambers 124 and 126 may not provide substantial mechanical support to the foot of a user, but in at least one embodiment, provide an aesthetic feature to shoe 100.
[0041] In at least one embodiment, inflatable air chambers 106-112, 124 and 126 may comprise an elastomeric material such as silicone, styrene-butadiene rubber, polybutadiene rubber, ethylene-propylene rubber, fluoroelastomers, nitrile rubbers, polyurethane rubbers. In addition to the aforementioned materials, other suitable materials may be employed.
[0042] In at least one embodiment, inflatable air chambers 106-112 are coupled to pneumatic ports 140, 142, 144 and 146 via a plurality of conduits as shown (the plurality of conduits may be represented by tubing 148). In at least one embodiment, inflatable air chambers 124 and 126 are coupled to pneumatic ports 150 and 152 via conduits 154 and 156, respectively. In at least one embodiment, conduits 154 and 156 (also the plurality of conduits represented by tubing 148) may comprise lengths of tubing comprising a flexible polymer, such as a segment of silicone tubing. When assembled into sole 104, ports 140-146 and 150-152 may insert into and extend through apertures 158 at rear edge 121 of sole 104. Apertures 158 may be arranged and dimensioned to receive nozzles extending from a pneumatic connector, as described below. While apertures 158 are shown to be located at rear edge 121 of sole 104, they may equally be located on other portions of sole 104, such as along outer edge 120 or inner edge 122 without departing from the scope of the disclosed shoe. In at least one embodiment, apertures 158 may be configured to accommodate seals 160 to support relatively high pneumatic pressures injected through ports 140-146, 150 and 152. In at least one embodiment, pneumatic pressures can reach 5 bars or greater when filling the air chambers. In at least one embodiment, seals 160 are o-rings.
[0043] It will be appreciated that the at least one of inflatable air chambers 106-112 are inflatable and deflatable such that a pressure of the at least one of the plurality of the inflatable air chambers relative to atmospheric pressure is adjustable. In some instances, the pressure can be set to accord with a specific pressure (e.g., defined numerically). In some instances, each of a set of categorical pressure states can be defined and associated with a pressure range and/or pressure value. For example, an atmospheric pressure state can be defined to accord with an inflatable air chamber not being deformed or stiffened; one or more positive pressure states can be defined to accord with pressure inside an inflatable air chamber being higher than the atmospheric pressure (e.g., by a defined amount); and one or more negative pressure states can be defined to accord with the pressure inside an inflatable air chamber being lower than the atmospheric pressure (e.g., by a defined amount). A negative pressure state may be achieved by (for example) applying negative pressure to deflate a chamber.
[0044] Fig. IB illustrates an assembled profile view of shoe 100, in accordance with at least one embodiment. In at least one embodiment, Fig. IB shows occupation of elevations within sole 104 by inflatable air chambers (e.g., inflatable air chambers 106, 108, 112, 126; inflatable air chambers 110, 124 are hidden). In at least one embodiment, subchambers 132 and 134 (including hidden subchambers 128 and 130) are non-coplanar with inflatable air chambers 106- 112). In at least one embodiment subchambers 132 and 134 (including hidden subchambers 128 and 130) are located within sole 104 at a distance hi above outsole surface 162. In at least one embodiment, distance h i extends along the solid line extending along sole 104 from heel portion 114 to forefoot portion 116 (drawn through subchambers 132 and 134), and may vary in magnitude along sole 104.
[0045] As shown in the profile view, inflatable air chambers 106-112 may extend along a first layer (e.g., an upper layer) within sole 104, where the first layer is represented by the dashed line extending through inflatable air chambers 106-112. In at least one embodiment, inflatable air chambers 106-112 may extend within sole 104 within the first (e.g., upper) layer at a distance hi above outsole surface 162. Distance hi may vary along sole 104. In at least one embodiment, inflatable air chambers 124 and 126 may also extend within the first layer substantially adjacent to inflatable air chambers 106-112. In at least one embodiment, inflatable air chambers 124 and 126 may extend along a second plane (e.g., a lower plane) located at a distance 112 above outsole surface 162, where A 2 is less than hi. Distance A 2 may also vary along sole 104. In at least one embodiment, inflatable air chambers 106-112 may generally be located above subchambers 132 and 134 (including hidden subchambers 128 and 130) by a distance hs, where hs is the difference between hs an hi. In at least one embodiment, hs may range from zero to a few millimeters.
[0046] Fig. 1C illustrates a plan view of inflatable air chambers showing relative positions and dimensions of inflatable air chambers 106-112 and inflatable air chambers 124 and 126, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 106-112 may be located in an upper layer (e.g., adjacent to insole surface 118) within the sole (e.g., sole 104), whereas inflatable air chamber 124 and 126 may be located within in the same layer, or in a lower layer, as described above. In at least one embodiment inflatable air chamber 106 is configured to support the anterior portion of a user’s foot (e.g., the forefoot). Similarly, in at least one embodiment, inflatable air chamber 108 is configured to support the arch or midfoot portion of the user’s foot. In at least one embodiment, inflatable air chambers 110 and 112 are respectively configured to support the lateral (e.g., outer half) and medial (e.g., inner half) heel portion of the user’s foot.
[0047] During use, the degree of support from the individual inflatable air chambers for different parts of the foot may be customized by development of a pressure profile, whereby the air pressure within individual air chambers is adjusted by the user through a controlled pressure source described below. For example, a pressure profile for a running or jogging activity may involve higher pressures within inflatable air chamber 106 in the forefoot region than pressures within inflatable air chambers 110 and 112. Air pressure within inflatable air chambers 110 and 112 may be independently adjusted to compensate for pronation or supination of the user’s foot.
[0048] In at least one embodiment, inflatable air chambers 124 and 126 are configured to occupy a peripheral portion of the sole (e.g., sole 104). Within inflatable air chambers 124 and 126, subchambers 130 and 134 are separated from subchambers 128 and 132, respectively, but are interconnected via conduits 136 and 138. Thus, inflation and deflation of subchamber pairs 128/130 and 132/134 may occur simultaneously as pressures of inflatable air chambers 124 and 126 are adjusted through ports 150 and 152. According to at least one embodiment, subchambers 128, 130, 132 and 134 have limited lateral extent (e.g., aspect ratio L/w is at least 5:1), As such, inflatable air chambers 124 and 126 may not provide substantial mechanical support for the user’s foot, and may serve to add an aesthetic appeal to shoe 100. [0049] The overall height of the sole (e.g., sole 104) may only be partially adjustable by symmetrical adjustment of the level of inflation of inflatable air chambers 124 and 126. Inflation of inflatable air chambers 124 and 126 may not materially increase the height of the sole (e.g., sole 104). In at least one embodiment, inflatable air chambers 124 and 126 protrude through the outer and inner edges (e.g., outer edge 120 and inner edge 122) of the sole (e.g., sole 104), and may provide an aesthetic adornment to the shoe (e.g., shoe 100). In at least one embodiment, inflatable air chambers may be inflated or collapsed by the user to show or hide the adornment.
[0050] Fig. ID illustrates a plan view of sole assembly 170 of shoe 100, in accordance with at least one embodiment. In at least one embodiment, subchambers 128 and 132 of inflatable air chambers 124 and 126 are substantially adjacent (but may be vertically displaced) to inflatable air chambers 110 and 112, respectively. In at least one embodiment, inflatable air chambers 124 and 126 are located closest to outer and inner edges 120 and 122, respectively. As noted above, inflatable air chambers 124 and 126 may protrude through outer and inner edges 120 and 122. In at least one embodiment, subchamabers 128 and 132 may be located more peripherally than the outer edges of inflatable air chambers 110 and 112, respectively. Similarly, subchambers 130 and 134 of inflatable air chambers 124 and 126, respectively, are substantially adjacent to (but vertically displaced) outer and inner edges of inflatable air chamber 106, respectively.
[0051] In at least one embodiment, inflatable air chamber 108 is asymmetrically located within the midfoot portion (e.g., midfoot portion 115) of sole 104. Contact area of the arch of the foot of some users with the midfoot portion of sole 104 may be skewed toward outer edge 120 of sole 104. The asymmetric positioning of inflatable air chamber 108 may reflect the asymmetric contact area of the user’s arch.
[0052] Fig. IE illustrates a profile view of shoe 100, showing inflatable air chambers 124 and 126 collapsed, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 124 and 126 may be deflated or collapsed by the user to decrease the height of sole 104 (e.g., to a height Av). By deflation or collapse of inflatable air chambers 124 and 126, the height sole 104 may be restored to a default height (e.g., Av) and decorative edges of inflatable air chambers 124 and 126 may be diminished or hidden.
[0053] Fig. IF illustrates a profile view of shoe 100, showing inflatable air chambers 124 and 126 inflated, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 124 and 126 may be deflated or collapsed to a desired level by the user to increase height of sole 104 (e.g., to a height /zy where hs > h4) and display edges of inflatable air chambers for aesthetic purposes.
[0054] Fig. 2A illustrates an exploded 3D view of shoe 200, in accordance with at least one embodiment. In at least one embodiment, shoe 200 comprises upper 202, sole 204, forefoot inflatable air chamber 206, midfoot inflatable air chamber 208 and heel inflatable air chambers 210 and 212. In at least one embodiment, inflatable air chambers 206-212 are incorporated into sole 204 and substantially the same as inflatable air chambers 106-112, as described above.
[0055] In at least one embodiment, inflatable air chambers 206-212 extend in succession longitudinally along sole 204, between heel portion 214, midfoot portion 215 and forefoot portion 216. In at least one embodiment, inflatable air chambers 206-212 extend laterally between outer edge 220 and inner edge 222 of sole 204. In at least one embodiment, inflatable air chambers 206-212 may not protrude through outer and inner edges 220 and 222, respectively. In at least one embodiment, inflatable air chambers 206-212 are entirely contained within sole 204, having no parts that protrude through outer and inner edges 220 and 222, respectively. In at least one embodiment, inflatable air chambers 206-212 are located substantially within a layer below insole surface 218 of sole 204.
[0056] In at least one embodiment, inflatable air chamber 206 has substantially a two- dimensional shape of the forefoot portion 216, extending longitudinally and laterally from the toe 223 to midfoot portion 215. Inflatable air chamber 208 extends both longitudinally and laterally over midfoot portion 215. Inflatable air chambers 210 and 212 longitudinally and laterally extend over heel portion 214 from midfoot portion 215 to rear edge 221 of sole 204. In Fig. 2A, shoe 200 is configured to fit the left foot.
[0057] In at least one embodiment, shoe 200 comprises inflatable air chamber 224 extending both longitudinally and laterally over forefoot portion 216 of sole 204. In at least one embodiment, inflatable air chamber 224 and inflatable air chamber 226 adjacent to inflatable air chamber 224. In at least one embodiment, inflatable air chambers 224 and 226 are located in a layer within sole 204 below inflatable air chambers 206-212. In at least one embodiment, inflatable air chamber 224 extends over a portion of midfoot portion 215. In at least one embodiment, inflatable air chamber 226 extends from rear edge 221 into midfoot portion 215, where front edge 228 may abut or nearly abut rear edge 230 of inflatable air chamber 224.
[0058] In at least one embodiment, inflatable air chambers 224 and 226 extend laterally from outer edge 220 to inner edge 222. In at least one embodiment, inflatable air chambers 224 and 226 may have a lateral extent that exceeds the lateral extents of inflatable air chambers 206, 210 and 212. In at least one embodiment, lateral edges 232, 234, 236 and 238 of inflatable air chambers 224 and 226, respectively, may protrude through outer edge 220 and inner edge 222 of sole 204.
[0059] In at least one embodiment, inflatable air chambers 206-212 are coupled to pneumatic ports 240, 242, 244 and 246 via a plurality of conduits as shown (the plurality of conduits may be represented by tubing 248). In at least one embodiment, inflatable air chambers 224 and 226 are coupled to pneumatic ports 250 and 252 via conduits 254 and 256, respectively. When assembled into sole 204, ports 240-246 and 250-252 may insert into and extend through apertures 258 at rear edge 221 of sole 104. Apertures 258 may be arranged and dimensioned to receive nozzles extending from a pneumatic connector, as described below. In at least one embodiment, apertures 258 may be configured to accommodate seals 260 to support relatively high pneumatic pressures injected through ports 240-246, 250 and 252. In at least one embodiment, pneumatic pressures can reach 5 bars or greater when filling the air chambers. In at least one embodiment, seals 260 are o-rings.
[0060] Fig. 2B illustrates a plan view of inflatable air chambers showing relative positions and dimensions of inflatable air chambers 206-212 and inflatable air chambers 224 and 226, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 206-212 are located in an upper plane within the sole (e.g., sole 204), whereas inflatable air chamber 224 and 226 are located within a lower plane, as described above. In at least one embodiment inflatable air chamber 206 is configured to support the anterior portion of a user’s foot (e.g., the forefoot). Similarly, in at least one embodiment, inflatable air chamber 208 is configured to support the arch or midfoot portion of the user’s foot. In at least one embodiment, inflatable air chambers 210 and 212 are respectively configured to support the lateral (e.g., outer half) and medial (e.g., inner half) heel portion of the user’s foot. [0061] In at least one embodiment, inflatable air chambers 224 and 226 are configured to occupy a layer of sole 204 below inflatable air chambers 206-212. In at least one embodiment, inflatable air chambers 224 and 226 have lateral spans W2 and W3, respectively, that may exceed lateral spans W4 and ws of inflatable air chamber 206 and inflatable air chambers 210 and 212 (combined), respectively (e.g., W2 > W4, W3 > s). In at least one embodiment, lateral spans W2 and ws of inflatable air chambers 224 and 226 may exceed the entire lateral span of the sole (e.g., sole 204; see Fig. 2C).
[0062] Fig. 2C illustrates a plan view of sole assembly 270, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 224 and 226 are substantially below (vertically displaced) from inflatable air chambers 206-212. In at least one embodiment, inflatable air chambers 224 and 226 have similar shapes and dimensions as sole 204 so that edges of inflatable air chambers 224 and 226 abut or protrude through outer and inner edges 220 and 222, respectively, of sole 204.
[0063] In at least one embodiment, inflatable air chambers 224 and 226 longitudinally extend over a substantial fraction of the length of sole 204, forming a middle layer that may divide sole 204 into an upper portion and a lower portion.
[0064] Fig. 2D illustrates an assembled profile view of shoe 200, in accordance with at least one embodiment. In at least one embodiment, occupation of elevations within sole 204 by inflatable air chambers 206, 208, 212, 224 and 226 (inflatable air chamber 210 is hidden behind inflatable air chamber 212). In at least one embodiment, inflatable air chambers 206-212 are located within a layer of sole 204 that is at a distance hs above outsole surface 262. In at least one embodiment, distance hs varies along the length of sole 204. In at least one embodiment, inflatable air chambers 224 and 226 are located within a layer of sole 204 that is at a distance he above outsole surface 262, where he is less than hs. In at least one embodiment, inflatable air chambers 206-212 may be separated from inflatable air chambers 224 and 226 by a distance h , where hy is approximately hs - he. In at least one embodiment, he may range between 3 and 15 millimeters.
[0065] In at least one embodiment, inflatable air chambers 224 and 226 may be inflated to increase distance hs, raising the overall height hs of sole 204 by several millimeters. During use, the height of the user is also increased by approximately the same amount, thus changing the user’s sense of balance or providing another kinesthetic advantage.
[0066] In at least one embodiment, edges of inflatable air chambers 224 and 226 may protrude through the outer edge (e.g., outer edge 220) and inner edge 222 of sole 204. Protruding portions of inflatable air chambers 224 and 226 may provide aesthetic adornments for shoe 200 that may be shown when inflated or hidden when collapsed by the user.
[0067] Fig. 2E illustrates a 3D view of shoe 200, showing inflatable air chambers 224 and 226 collapsed, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 224 and 226 may be deflated or collapsed by the user to decrease the height of sole 204 (e.g., to a height fo). By deflation or collapse of inflatable air chambers 224 and 226, the height sole 204 may be restored to a default height (e.g., hg) and decorative edges of inflatable air chambers 224 and 226 may be diminished or hidden.
[0068] Fig. 2F illustrates a 3D view of shoe 200, showing inflatable air chambers 224 and 226 inflated, in accordance with at least one embodiment. In at least one embodiment, inflatable air chambers 224 and 226 may be inflated to a desired level by the user to increase height of sole 204 (e.g., to a height hio, v etehio is greater than hg) and display edges of inflatable air chambers for aesthetic purposes.
[0069] Fig. 3A illustrates a 3D view of controlled pressure source 300, in accordance with at least one embodiment. In at least one embodiment, controlled pressure source 300 comprises housing 302, display 304 mounted on housing 302, pneumatic hose 306 terminated by pneumatic connector 308, attached to pneumatic hose 306. In at least one embodiment, display 304 may be a passive read-out screen such as a liquid crystal display (LCD). In at least one embodiment, display 304 may be an LCD touch screen display to be used as a human-machine interface.
[0070] In at least one embodiment, within housing 302 and hidden from view, controlled pressure source 300 comprises an air compressor, a tank or reservoir for containing pressurized air coupled to the air compressor, a plurality of pressure regulators and pressure sensors coupled to the reservoir, and a plurality of valves coupled to the pressure regulators, in accordance with at least one embodiment. In at least one embodiment, the plurality of valves is pneumatic hose 306 and pneumatic connector 308. In at least one embodiment, controlled pressure source 300 may comprise an electronic control circuit comprising a plurality of driver circuits and a controller (e.g., an embedded microprocessor, single board computer, etc.) coupled to the plurality of driver circuits. The driver circuits may drive electromechanical devices such as valves and pressure regulators. In at least one embodiment, the controller may also be coupled to pressure sensors to read values of air pressure, for example, within individual inflatable air chambers within the disclosed shoe (e.g., shoe 100 or 200).
[0071] In at least one embodiment, pneumatic connector 308 comprises a plurality of nozzles 310 protruding as tubes from the body of pneumatic connector 308. Individual nozzles 310 may be configured to insert as a group into apertures 158 or 258 of shoe 100 or 200, respectively. For example, nozzles 310 may be configured and arranged to seat in ports on the disclosed shoe (e.g., ports 140-146, 150 and 152 of shoe 100). Nozzles 310 may be inserted into apertures (e.g., apertures 158 or 258) on the sole (e.g., sole 104 or 204) of the disclosed shoe (e.g., shoe 100 or 200). Seals within the ports (e.g., seals 160) may be configured to engage nozzles 310, enabling an air-tight connection between the disclosed shoe (e.g., shoe 100 or 200) and pneumatic connector 308.
[0072] In at least one embodiment, pneumatic hose 306 comprises a plurality of tubing segments (not shown). In at least one embodiment, individual tubing segments may be attached to individual nozzles 310.
[0073] In at least one embodiment, controlled pressure source 300 further comprises a second pneumatic hose 312 and second pneumatic connector 314. In at least one embodiment, second pneumatic hose 312 and second pneumatic connector 314 are substantially identical to (first) pneumatic hose 306 and (first) pneumatic connector 308, respectively. Second pneumatic hose 312 and second pneumatic connector 314 may be configured to couple to a second shoe. For example, the second shoe is the mate of the disclosed shoe (e.g., shoe 100 or 200).
[0074] In at least one embodiment, controlled pressure source 300 configured to be portable. For example, controlled pressure source may be designed to be compact and light weight for ease of transport. In at least one embodiment, controlled pressure source 300 may further comprise power cable 316. In at least one embodiment, power cable 316 may be an AC power cord, configured to plug into an AC wall socket (e.g., a 240V AC or 120VAC wall socket). In at least one embodiment, controlled pressure source 300 may be configured to be powered by batteries exclusively or as an option. In at least one embodiment, controlled pressure source 300 may comprise a compartment (not shown) configured to house a plurality of, for example, lithium ion or alkaline batteries.
[0075] Fig. 3B illustrates a 3D view of controlled pressure source 300 pneumatically coupled to shoe 100 or 200, in accordance with at least one embodiment. In at least one embodiment, controlled pressure source 300 is pneumatically coupled to shoe 100 (200) via pneumatic hose 306 and pneumatic connector termination. Nozzles (e.g., nozzles 310) protruding from the body of pneumatic connector 308 are shown inserted, or docked, into ports (not shown) embedded within sole 104 (204) on shoe 100 (200). Nozzles may be inserted through apertures 158 (258), located on the rear edge of sole 104 (204), such that pneumatic connector 308 may be “plugged” into shoe 100 (200). In at least one embodiment, pneumatic connector 308 may be keyed to permit a unique orientation for insertion of nozzles (e.g., nozzles 310) into ports on sole 104, ensuring correct correspondence between individual nozzles and individual inflatable air chambers.
[0076] In at least one embodiment, controlled pressure source 300 may have dimensions that are similar to the dimensions of shoe 100 (200), as shown. For example, controlled pressure source 300 may have a length of 15 to 25 cm, and a width and height of 10 cm.
[0077] As noted above, controlled pressure source 300 may be configured to enable user control of air pressures within individual inflatable air chambers within the disclosed shoe. For example, in at least one embodiment, display 304 may be a touch screen. A user may communicate with controlled pressure source 300 by programming data into an on-board microprocessor via a touch screen function of display 304. In at least one embodiment, a user may communicate with controlled pressure source 300 through a wireless connection. For example, a user may use a smart phone, desktop, laptop, tablet or other suitable device to program controlled pressure source 300 and read data provided by controlled pressure source 300 via a wifi, Bluetooth® or equivalent wireless connection. In at least one embodiment, a corded connection between controlled pressure source 300 and programming/readout device may be optionally employed. For example, a smart phone, desktop, laptop, tablet or other suitable device may be connected to controlled pressure source 300 through a USB cable. [0078] Fig. 4 illustrates a block diagram of a mechatronic system 400 for controlled pressure source 300, in accordance with at least one embodiment. In at least one embodiment, control system 400 comprises power source 402, controller 404, air compressor 406, a plurality of pressure regulators 408, a plurality of pressure sensors 410 and a plurality of valves 412. In at least one embodiment, mechatronic system 400 comprises a plurality of outlet/inlet ports 414 and 416. In at least one embodiment, inlet/outlet ports 414 and 416 are configured to couple to first shoe 418 and second shoe 420, respectively (e.g., as shown in Fig. 3B), where first shoe 418 and second shoe 420 may be the left and right mates of shoe 100 or shoe 200. In at least one embodiment, inlet/outlet port 414 may comprise pneumatic hose 306 and pneumatic connector 308. In at least one embodiment, inlet/outlet port 416 may comprise pneumatic hose 312 and pneumatic connector 314. Individual nozzles (e.g., nozzles 310 on pneumatic connector 308) may be coupled to individual inlet/outlet ports 416 of the plurality of inlet/outlet ports 416, which are coupled to individual valves 412 of the plurality of valves 412. Air compressor 406 and other components of mechatronic system 400 may be configured to handle air pressures up to 5 bar or higher.
[0079] The connections between the components of mechatronic system 400 are shown by connector lines within the block diagram. Arrows indicate the directional flow of data or signals. In at least one embodiment, pressure regulators 408 may be coupled to valves 412 with a two- way signal or data communication line. For example, valves 412 may be on-off or proportional valves, whereby signals from pressure regulators 408 may vary the valves’ open/closed/proportional states to regulate the pressures within individual inflatable air chambers. In at least one embodiment, pressure regulators 408 may be configured to regulate air pressures up to 5 bar or higher. Pressure regulators 408 may also be configured to read status of valves 412 to obtain valve status, for example.
[0080] In at least one embodiment, data interface 422 may have a two-way connection to a user interface, such as the display (e.g., display 304 in Fig. 3 A) on-board the controlled pressure source 300. In at least one embodiment, a user interface may be a smart phone, tablet, laptop, desktop computer or other suitable device. In at least one embodiment, data interface 422 may send and receive binary data through a wireless or wired (e.g., corded) connection, to and from external computing device 424, such as a smart phone. Data interface 422 may process and package data to communicate with controller 404 and external computing device 424 or onboard interface 426. In at least one embodiment, on-board interface 426 may comprise a touch screen of display 304 (see Fig. 3A).
[0081] In at least one embodiment, data interface 422 is coupled to controller 404 via a two- way communication line. Controller 404 may read data or send data from and to external computing device 424 or on-board interface 426. In at least one embodiment, controller 404 communicates with pressure regulators 408 (to set pressure). In at least one embodiment, controller 404 reads pressures within individual inflatable air chambers (within shoe 100 or 200) via pressure sensors 410. In at least one embodiment, controller 404 communicates with valves 412 to control opening, closing or proportionality according to pressures within the inflatable air chambers. Individual air chambers may be coupled to individual valves within the plurality of valves 412. In at least one embodiment, air compressor 406 is directly coupled to pressure regulators 408. In at least one embodiment, air compress 406 is coupled to reservoir 428, whereby pressure regulators 408 are coupled to reservoir 428.
[0082] In an example, a user may input data through on-board interface 426 or external computing device 424. Data interface 422 may send user input data to controller 404, where software routines stored in a memory coupled to controller 404 may be executed to process the user input. User input may be translated to pressure profiles of the disclosed shoe. A pressure profile may be a collective status of the air pressures within the individual inflatable air chambers. A pressure profile may be created by the user, or supplied by the manufacturer, to correspond to a specific activity undertaken by the user.
[0083] Based on user input and pressure status of individual inflatable air chambers, controller 404 may command inflation and deflation of specific inflatable air chambers. In at least one embodiment, pressurized air issuing from air compressor 406 may be contained in within reservoir 428, which is coupled to air compressor 406. Reservoir 428 may be configured to hold air pressures up to 5 bar. Filling of reservoir 428 may be commanded by controller 404 if pressure within the reservoir should drop below a threshold pressure, read by a pressure sensor coupled to reservoir 428 and to controller 404. Control of electromechanical devices such as valves 412 and air compressor 406 (which comprises an electric motor) may be mediated by driver circuits coupled to power source 402 and controller 404. Driver circuits may have power- handling devices such as power transistors that are configured to supply power to actuate the electromechanical devices comprised by mechatronic system 400. Controller 404 may send data signals to driver circuits to activate and deactivate them.
[0084] Fig. 5 illustrates an exemplary user display 500, in accordance with at least one embodiment. In at least one embodiment, the user may select a number of options, such as pressure mode 502, type of statistics desired 504, personal data 506, such as height, weight and leg length. The user may read the current pressure mode or profile 508, as well as air pressure level within the tank or reservoir 510.
[0085] In at least one embodiment, a user may input data to select a pre-programmed pressure profile, or to create a custom pressure profile by selecting pressures for different individual inflatable air chambers.
[0086] Fig. 6 illustrates smart shoe 600, showing embedded pressure sensors and integrated circuits, in accordance with at least one embodiment. In at least one embodiment, smart shoe 600 is structurally similar in construction to shoe 200, described above. While the illustrated embodiment of shoe 600 is structurally based on shoe 200, shoe 100 may equally be employed. In at least one embodiment, smart shoe 600 comprises upper 602, sole 604, inflatable air chamber 606 covering the forefoot portion of sole 604, inflatable air chamber 608 covering the midfoot portion of sole 604, and inflatable air chambers 610 and 612 covering the heel portion of sole 604. In at least one embodiment, inflatable air chambers 606-612 are located within a layer in an upper portion of sole 604. Smart shoe 600 further comprises inflatable air chamber 614 and inflatable air chamber 616, both inflatable air chambers located in a lower layer of sole 604 below inflatable air chambers 606-612.
[0087] In at least one embodiment, smart shoe 600 comprises a plurality of pressure sensors 618 and integrated circuits embedded within sole 604. In at least one embodiment, pressure sensors 618 are distributed under or within inflatable air chambers to measure pressures generated by user placement and forces on different portions of sole 604 during use. In at least one embodiment, integrated circuits may include microprocessor 620, accelerometer 622 and power device 624. In at least one embodiment, power device 624 may be a rechargeable or exchangeable battery. Accelerometer 622 may be configured to detect acceleration or deceleration, which may be used to generate a prediction corresponding to motion detection, step counting, vibration sensing, etc. The acceleration or deceleration may include linear acceleration that may indicate a presence or degree of (for example) movement or vibration (e.g., in a unit of g or m/s2). Data from accelerometer 622 and/or another movement sensor (e.g., a gyroscope - which may detect an angular position and/or velocity and/or a measurement with a unit of 7s or rad/s) may be used to characterize foot movement along a given straight or angular axis (e.g., a rotational movement); foot position (e.g., an angular position or orientation), which may be used to infer a degree of stabilization, to track rotation of a foot and/or to tract foot orientation; impact force during a movement; a user’s degree of lean towards one side versus another; a user’s balance; and/or a user’s shift in balance. Accelerometer 622 and/or another movement sensor (e.g., a gyroscope) may include a MEMS device.
[0088] In at least one embodiment, power device 624 comprises an inductive voltage and current generator that feeds a small rechargeable battery. Power device 624 and accelerometer 622 are coupled to microprocessor 620. In at least one embodiment, integrated circuitry may be on a single chip or board embedded within sole 604.
[0089] In at least one embodiment, microprocessor 620 is coupled to data port 626 on sole 604. In at least one embodiment, data port 626 may be a USB connector (e.g., USB C or micro USB connector) or other suitable data and power connector. In at least one embodiment, data port 626 is configured to carry power (e.g., 5 VDC). While the illustrated embodiment shows that data port 626 is on inner edge 628 of sole 604, data port 626 may be positioned at any suitable location on sole 604.
[0001] It will be appreciated that shoe 600 may include one or more other sensors instead of in addition to any or all sensors shown in FIG. 6. Any or all of the sensors/other sensors may be used to (for example) detect a characteristic that may be used to infer a quality of a movement, a type of movement, a terrain, etc. The one or more other sensors may include a pressure or force sensor (e.g., that may include a sensor that measures a capacitive, resistive, strain gauge-based, or piezoelectric measurement and/or a sensor that detects a distribution of pressure across a portion of cross-sectional area of shoe 600, which may facilitate inferring how weight is being distributed). The one or more other sensors may include a magnetometer (e.g., that may include a MEMS device and/or that may detect a magnetic-field strength and/or direction (e.g., heading and orientation relative to the Earth’s magnetic field) that may be used to infer a foot direction and/or orientation). A magnetometer may collect a measurement using a unit such as pT or gauss. A magnetometer may include or may be part of and/or may include (for example) a compass and/or a navigation unit.
[0001] The one or more other sensors may include a temperatures sensor, such as a thermocouple or thermistor (e.g., that may detect a temperature within an insole of shoe 600 or a part of shoe 600, which may be used to infer a degree of comfort or other issue with the foot).
[0002] Though not depicted, it will be appreciated that shoe 600 may include a microcontroller and/or system on a chip (SoC) that may facilitate controlling how one or more inflatable air chambers 606-612 are to be pressurized (e.g., using a controlled pressured source, based on one or more measurements collected from one or more sensors disclosed herein, and/or based on user input); a wireless module (e.g., that may facilitate communicating with a user device, external sensor, cloud server, etc.); and/or a battery (e.g., a replaceable or rechargeable battery - which may provide power to one or more components disclosed herein, such as a microcontroller, SoC, sensor, etc.).
[0003] Fig. 7 illustrates a flow chart 700 for an exemplary method for operating a controlled pressure source and athletic shoe (e.g., shoe 100 or 200), in accordance with at least one embodiment.
[0004] At operation 702, a user may open a screen on a device such as a smart phone, tablet, laptop, desktop, or display (e.g., display 304) on board the controlled pressure source (e.g., controlled pressure source 300), such as display 500, for data entry. The user may enter personal statistics, such as height, weight, leg length, etc. Such data may be used by an on-board processor (e.g., controller 404) included in the controlled pressure source (e.g., controlled pressure source 300) to compute performance statistics and/or determine a suitable pressure profile to develop by pressurizing and depressurizing individual inflatable air chambers in the athletic shoe (e.g., shoe 100 or 200, or smart shoe 600). In at least one embodiment, the user may opt to create a custom pressure profile by entering force or pressure values for different parts of the user’s foot. These data may be transferred to a memory coupled to the on-board processor (e.g., controller 404). [0005] In at least one embodiment, the on-board processor may execute software to translate the input to pressures needed to fill individual inflatable air chambers. The pressure data may be stored in a memory coupled to the on-board microprocessor. In at least one embodiment, the user may store a custom pressure profile in a library of pressure profiles. The pressures may be linked to individual inflatable air chambers within the athletic shoe (e.g., shoe 100, 200 or smart shoe 600).
[0006] At operation 704, the athletic shoe (e.g., shoe 100, 200 or smart shoe 600) is docked to the controlled pressure source (e.g., controlled pressure source 300). the on-board controller (e.g., controller 404) may initiate realization of the pressure profile in the athletic shoe by reading pressure sensors (e.g., pressure sensors 410) to determine pressure status of individual inflatable air chambers. The on-board controller may determine the differences between target pressure values and actual pressures within individual inflatable air chambers. Corrections in the pressure values of individual inflatable air chambers may be performed by the on-board controller, whereby the controller may command individual valves (e.g., valves 412) that are coupled to corresponding inflatable air chambers to open, allowing pressurized air to flow into or out of the individual inflatable air chambers. In at least one embodiment, pressure regulators (e.g., pressure regulators 408) may have setpoint pressures set by the on-board controller, and may regulate the pressures within the individual inflatable air chambers to the desired values. In at least one embodiment, air pressures within inflatable air chambers may be regulated up to 5 bar.
[0007] The following examples are provided that illustrate the various embodiments. The examples can be combined with other examples. As such, various embodiments can be combined with other embodiments without changing the scope of the invention.
[0008] Example 1 is a footwear article, comprising a sole, a plurality of inflatable air chambers within the sole; one or more pressure sensors, wherein each pressure sensor is coupled to at least one of the plurality of inflatable air chambers; and one or more ports on an edge of the sole, wherein at least one of the plurality of inflatable air chambers is fluidically coupled to the one or more ports, wherein the one or more ports are configured to receive a pneumatic connector. [0009] Example 2 includes all features of example 1, wherein at least one of the plurality of inflatable air chambers is inflatable and deflatable such that a pressure of the at least one of the plurality of the inflatable air chambers relative to atmospheric pressure is adjustable.
[0010] Example 3 includes all features of example 1, wherein at least one of the plurality of inflatable air chambers is coupled to the one or more ports via a conduit, wherein the conduit extends within the sole.
[0011] Example 4 includes all features of example 1, wherein the plurality of inflatable air chambers comprises a first inflatable air chamber, wherein the first inflatable air chamber is within a forefoot portion of the sole, wherein the first inflatable air chamber is coupled to a first port.
[0012] Example 5 includes all features of example 4, wherein the plurality of inflatable air chambers comprises a second inflatable air chamber that extends within a midportion of the sole, wherein the second inflatable air chamber is coupled to a second port.
[0013] Example 6 includes all features of example 5, wherein the plurality of inflatable air chambers comprises a third inflatable air chamber within a heel portion of the sole, and wherein the third inflatable air chamber is coupled to a third port.
[0014] Example 7 includes all features of example 6, wherein the plurality of inflatable air chambers comprises a fourth inflatable air chamber within the heel portion of the sole, and wherein the fourth inflatable air chamber is coupled to a fourth port.
[0015] Example 8 includes all features of example 7, wherein the third inflatable air chamber is laterally adjacent to the fourth inflatable air chamber.
[0016] Example 9 includes all features of example 7, wherein the plurality of inflatable air chambers comprises a fifth inflatable air chamber.
[0017] Example 10 includes all features of example 9, wherein the fifth inflatable air chamber longitudinally extends within an anterior portion of the sole between a toe portion and the midportion of the sole, wherein the fifth inflatable air chamber laterally extends from an inner edge of the sole to an outer edge of the sole, and wherein the fifth inflatable air chamber is coupled to a fifth port. [0018] Example 11 includes all features of example 9, wherein the fifth inflatable air chamber extends along an inner edge of the sole, and wherein the fifth inflatable air chamber is coupled to a fifth port.
[0019] Example 12 includes all features of example 11, wherein the fifth inflatable air chamber comprises a first fore-chamber and a first rear chamber, wherein the first fore-chamber extends along the forefoot portion of the sole, wherein the first rear chamber extends along the heel portion of the sole, and wherein the first fore-chamber is coupled to the first rear chamber.
[0020] Example 13 includes all features of example 12, wherein the plurality of inflatable air chambers comprises sixth inflatable air chamber,
[0021] Example 14 includes all features of example 13, wherein the sixth inflatable air chamber extends along an outer edge of the sole, and wherein the sixth inflatable air chamber is coupled to a sixth port.
[0022] Example 15 includes all features of example 14, wherein the sixth inflatable air chamber comprises a second fore-chamber and a second rear chamber, wherein the second forechamber extends along the forefoot portion of the sole, wherein the second rear chamber extends along the heel portion of the sole, and wherein the second fore-chamber is coupled to the second rear chamber.
[0023] Example 16 includes all features of example 13, wherein the sixth inflatable air chamber longitudinally extends from a heel region to the midportion of the sole and laterally extends from the inner edge of the sole to an outer edge of the sole, and wherein the sixth inflatable air chamber is coupled to a sixth port.
[0024] Example 17 includes all features of example 13, wherein the first inflatable air chamber, the second inflatable air chamber and the third inflatable air chamber are within an upper portion of the sole, wherein the fourth inflatable air chamber and the fifth inflatable air chamber are within a lower portion of the sole.
[0025] Example 18 includes all features of example 12, where the first inflatable air chamber, the second inflatable air chamber and the third inflatable air chamber extend along an upper portion of the sole, and wherein the fourth inflatable air chamber and the fifth inflatable air chamber extend within a midfoot portion of the sole, wherein the midfoot portion is below the upper portion of the sole.
[0026] Example 19 includes all features of example 1, where the footwear article further includes one or more motion sensors. The one or more motion sensors may include (for example) one or more accelerometers and/or one or more gyroscopes. Movement detected by the motion sensor(s) may be processed (e.g., locally or remotely) to predict a current or future activity state (e.g., sitting, standing, walking, running, biking, etc.), which may then inform how at least one inflatable air chamber is dynamically inflated or deflated.
[0027] Example 20 is a system comprising a footwear article, wherein the footwear article comprises a sole, wherein the sole includes a plurality of inflatable air chambers (e.g., embedded within the sole) and one or more pressure sensors (e.g., embedded within the sole); and one or more ports on an edge of the sole, wherein at least one of the plurality of inflatable air chambers is fluidically coupled to the one or more ports, wherein the one or more ports are configured to receive a pneumatic connector; and a controlled pressure source, wherein the controlled pressure source comprises an air compressor; an on-board controller coupled to the air compressor; a user interface (e.g., coupled to the on-board controller, provided via an application on a user device configured to be connected - via one or more networks - to at least part of the footwear article, etc.); one or more pressure regulators coupled to the on-board controller; and one or more valves coupled to the on-board controller, wherein the pneumatic connector coupled to the one or more valves, and wherein the pneumatic connector is configured to couple to the one or more ports on the edge of the sole.
[0028] Example 21 includes all features of example 20, wherein the air compressor is coupled to a reservoir.
[0029] Example 22 includes all features of example 20, wherein the one or more valves are coupled to the one or more pressure regulators.
[0030] Example 23 is a method, comprising selecting a pressure profile; and creating the pressure profile in a footwear article. The selection of the pressure profile may be received using a user interface coupled to a controller on board a controlled pressure source; using zero computing on board of the shoe, using zero computing in the docking station/portable pump (e.g., but just processing data stream, link to mobile app and do all computing and profile optimization in the cloud), etc.
[0031] Example 24 includes all features of example 23, wherein creating the pressure profile in the footwear article comprises inflating and deflating one or more inflatable air chambers within the footwear article.
[0032] Example 25 includes all features of example 24, wherein inflating and deflating the one or more inflatable air chambers comprises actuating one or more valves within the controlled pressure source, wherein the one or more valves are coupled to an air compressor and the controller within the controlled pressure source.
[0033] Example 26 includes all features of example 25, wherein actuating the one or more valves within the controlled pressure source comprises commanding the one or more valves by the controller, wherein the controller is coupled to one or more pressure sensors, wherein each of the one or more pressure sensors is coupled to at least one of the one or more inflatable air chambers, and wherein the controller is configured to read a pressure within the one or more inflatable air chambers.
[0034] Example 27 includes all features of example 23, wherein creating the pressure profile in the footwear article causes a sole of the footwear article to increase or decrease in height.
[0035] Besides what is described herein, various modifications may be made to the disclosed embodiments and implementations thereof without departing from their scope. Therefore, illustrations of embodiments herein should be construed as examples only, and not restrictive to the scope of the present disclosure. The scope of the invention should be measured solely by reference to the claims that follow.