BACKGROUNDThe present disclosure relates to adhesive tape applicators. More particularly, it relates to adhesive tape applicators capable of dispensing and cutting double-sided adhesive tape with one hand operation.
Manually operated adhesive tape dispensers are available in a variety of forms. For example, desktop-type adhesive tape dispensers typically include a weighted base maintaining a tape roll on a revolving spindle. A user pulls a leading end of the tape away from the roll, and then cuts a desired length of tape at a stationary blade provided with the dispenser. Common handheld adhesive tape dispensers employ a similar format. In either case, use of the dispenser requires two hands to handle the cut length of tape and apply it to the substrate surface(s) in question. Moreover, handheld tape dispensers require both of the user's hands to grasp the dispenser and pull/cut the desired length of tape.
As an alternative to tape dispensers, manually operated adhesive tape applicators are designed to directly apply and cut a length of tape (from a roll of tape) and often times require only a single hand of the user. In general terms, with single-handed adhesive tape applicators, a user can quickly and precisely apply a desired length of the adhesive tape to the substrate surface(s) in question without ever having to touch the tape. Conventionally, the applicator rotatably maintains a roll of tape, and provides a tape path ending at a roller or other curved application surface; the user applies pressure to this component as the tape is dispensed, ensuring immediate and complete wetting or adhesive engagement with the substrate surface. Further, most single-handed adhesive tape applicators provide a blade or other cutting surface for severing the tape. Consistent with the single-handed operation goal, a user-actuated mechanism is associated with the blade, allowing the user to cut a dispensed length of tape at a desired length by simple manipulation of the cutting mechanism using the same hand that is otherwise handling the applicator. In some instances, the mechanism maneuvers the tape relative to a stationary blade. More commonly, however, the mechanism translates the blade into and out of the tape path.
While single-handed adhesive tape applicators (incorporating a cutting mechanism) have been well received, certain concerns exist. For example, many users desire the ability to replace an expended roll of tape with a new roll of tape. To meet this demand, the applicator must allow for the partial disassembly thereof (e.g., temporary removal of one or more outer housing sections to access the roll of tape) in a manner that leaves the various internal components (e.g., the cutting mechanism) intact. This requirement, in turn, places distinct design constraints on the cutting mechanism construction, dictating a minimal number of components and complexity. Consistently cutting an adhesive tape via a relatively simple hand-actuated cutting mechanism can be exceedingly difficult under circumstances due to direct contact with the adhesive-bearing surface of the tape. The adhesive has a tendency to partially adhere to the blade. If this tendency is not accounted for, the cut end of the tape may undesirably stick to the blade following a cutting operation, causing the tape to accumulate (or “jam”) behind the blade (and/or other applicator malfunctions). Dispensing and cutting double-sided adhesive tape (i.e., adhesive coatings on both sides or major surfaces of the base film) is even more problematic. In fact, most available adhesive tape applicators simply cannot function with double-sided adhesive tape.
In light of the above, a need exists for adhesive tape applicators that can be operated with one hand, and incorporate a cutting mechanism that consistently cuts, without jamming, any format of adhesive tape, including double-sided adhesive tape.
SUMMARYSome aspects of the present disclosure relate to an adhesive tape applicator including a housing assembly, a carriage assembly, and a blade assembly. The housing assembly includes a housing and an application roller. The housing defines a tape dispensing opening. The application roller is rotatably mounted to the housing adjacent the tape dispensing opening. The carriage assembly includes a carriage body, a hub, and an idler roller. The carriage body is slidably mounted within the housing. The hub is carried by the carriage body and is configured to rotatably support a roll of tape. The idler roller is rotatably mounted to the carriage body. The blade assembly includes a blade arm, a blade, and a pressing finger. The blade arm defines a pivot end that is pivotably mounted to the housing such that the blade arm is pivotable relative to the housing about a pivot axis. The blade projects from the blade arm opposite the pivot end and terminates in a blade tip. In this regard, an articulation plane of the blade assembly is defined by the blade tip and the pivot axis. The pressing finger projects from the blade arm at a location between the blade and the pivot end, and extends through the articulation plane. Upon final assembly, the adhesive tape applicator defines a tape path from the hub to the tape dispensing opening, the tape path being defined, at least in part, by the application and idler rollers. With this construction, the adhesive tape applicator is configured to be transitionable between an application state and a cut state. In the application state, the blade tip is at a first side of the tape path. In the cut state, the blade tip is located at a second side of the tape path opposite the first side.
In some embodiments, the pressing finger interfaces with a length of tape along the tape path during a cutting operation, serving to push or position the cut end of the tape below the blade tip and prevent jamming In related embodiments, the pressing finger is flexible (e.g., formed of silicone or similar material), and deflects when brought into contact with a tape otherwise tensioned across the tape path. In other embodiments, one or both of the application and idler rollers are configured to exhibit a low surface energy or affinity to “sticking” to a pressure sensitive adhesive (or other adhesive format commonly employed with adhesive tapes). For example, the outer surface of one or both of the application roller and the idler roller can be silicone and/or include a series of spaced apart, circumferential ribs. With these constructions, the adhesive tape applicator consistently applies and cuts a desired length of adhesive tape from a tape roll, including double-sided adhesive tape.
Other aspects of the present disclosure relate to a system for applying adhesive tape. The system includes a roll of adhesive tape and an applicator. The applicator includes a housing assembly, a carriage assembly, and a blade assembly. The housing assembly includes a housing and an application roller. The housing defines a tape dispensing opening. The application roller is rotatably mounted to the housing adjacent the tape dispensing opening. The carriage assembly includes a carriage body, a hub, and an idler roller. The carriage body is slidably mounted within the housing. The hub is carried by the carriage body and rotatably maintains the roll of adhesive tape. The idler roller is rotatably mounted to the carriage body. The blade assembly includes a blade arm, a blade, and a pressing finger. The blade arm defines a pivot end that is pivotably mounted to the housing such that the blade arm is pivotable relative to the housing about a pivot axis. The blade projects from the blade arm opposite the pivot end and terminates in a blade tip. The pressing finger projects from the blade arm at a location between the blade and the pivot end, and terminates at a contact end opposite the blade arm. Upon final assembly, the system is configured to provide an application state in which a length of tape extends from the roll of tape to the idler roller and then to the application roller for dispensement through the tape dispensing opening. In the application state, the blade and the pressing finger are displaced from the length of tape. Further, the system is transitionable from the application state to a cut state in which the blade tip has progressed through the length of tape to sever the length of tape. In this regard, transitioning of the system from the application state to the cut state includes the contact end contacting the length of tape and then deflecting toward the blade. In some embodiments, the adhesive tape of the roll of adhesive tape is a double-sided adhesive tape.
Yet other aspects of the present disclosure relate to a method of dispensing an adhesive tape. The method includes receiving a system including an applicator maintaining a roll of adhesive tape. The applicator includes a housing assembly, a carriage assembly, and a blade assembly. The housing assembly includes a housing and an application roller. The housing defines a tape dispensing opening. The application roller is rotatably mounted to the housing adjacent the tape dispensing opening. The carriage assembly includes a carriage body, a hub, and an idler roller. The carriage body is slidably mounted within the housing. The hub is carried by the carriage body and rotatably maintains the roll of adhesive tape. The idler roller is rotatably mounted to the carriage body. The blade assembly includes a blade arm, a blade, and a pressing finger. The blade arm defines a pivot end that is pivotably mounted to the housing such that the blade arm is pivotable relative to the housing about a pivot axis. The blade projects from the blade arm opposite the pivot end and terminates in a blade tip. The pressing finger projects from the blade arm at a location between the blade and the pivot end, and terminates at a contact end opposite the blade arm. In an application state of the system, a leading segment of a length of tape from the roll of tape extends through the dispensing opening and is supported by the application roller. With the system in the application state, the leading segment is pressed into adhesive contact with a substrate surface to define a tacked region. The applicator is manipulated to draw the applicator away from the tacked region while simultaneously maintaining a pressing force on the application roller to successively dispense and apply an additional segment of the length of tape from the applicator and into adhesive contact with the substrate surface. The carriage assembly is actuated to pivot the blade arm, including the pressing finger and the blade contacting the length of tape between the application and idler rollers to completely sever the length of tape. In this regard, due to a tensioned rigidity of the length of tape, prior to the blade completely severing the length of tape, the pressing finger contacts the length of tape and deforms with further pivoting movement of the blade arm. In some embodiments, the adhesive tape of the roll of adhesive tape is a double-sided adhesive tape.
BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1A is an exploded, perspective view of an adhesive tape applicator in accordance with principles of the present disclosure;
FIG. 1B is a perspective view of the adhesive tape applicator ofFIG. 1A upon final assembly;
FIG. 2 is an interior plan view of a housing section component of the adhesive tape applicator ofFIG. 1A;
FIG. 3A is an exploded, perspective view of an application roller component of the adhesive tape applicator ofFIG. 1A;
FIG. 3B is a perspective view of the application roller ofFIG. 2A upon final assembly;
FIG. 3C is a cross-sectional view of the application roller ofFIG. 3A relative to a flat surface;
FIG. 4A is an interior perspective view of a portion of a carriage assembly of the adhesive tape applicator ofFIG. 1A;
FIG. 4B is an exterior perspective view of the carriage assembly portion ofFIG. 4A;
FIG. 5 is an exploded, perspective view of a blade assembly portion of the adhesive tape applicator ofFIG. 1A;
FIG. 6A is an interior perspective view of a blade arm component of the blade assembly ofFIG. 5;
FIG. 6B is a front view of the blade arm ofFIG. 6A;
FIG. 6C is side plan view of the blade arm ofFIG. 6A;
FIG. 7A is a side plan view of a finger structure component of the blade assembly ofFIG. 5;
FIG. 7B is a bottom view of the finger structure ofFIG. 7A;
FIG. 8A is a perspective view of the blade assembly ofFIG. 5 upon final construction;
FIG. 8B is a side view of the blade assembly ofFIG. 8A;
FIG. 9A is a side view illustrating mounting of the carriage assembly of the tape applicator ofFIG. 1A to the housing section ofFIG. 2 and in an application state;
FIG. 9B is a side view of the construction ofFIG. 9A in a cut state;
FIG. 10A is a side view illustrating mounting of the blade assembly ofFIG. 5 to the construction ofFIG. 9A and in the application state;
FIG. 10B is a side view illustrating the construction ofFIG. 10A in the cut state;
FIG. 11A is a side view illustrating a portion of the adhesive tape applicator ofFIG. 1A maintaining a roll of adhesive tape and in the application state;
FIGS. 11B and 11C illustrate use of the adhesive tape applicator ofFIG. 1A in applying adhesive tape to a substrate surface;
FIGS. 12A-12F schematically illustrate use of the adhesive tape applicator ofFIG. 1A in performing a cutting operation;
FIG. 12G is a side view illustrating an arrangement of the adhesive tape applicator ofFIG. 1A loaded with a roll of adhesive tape following completion of a cutting operation; and
FIG. 13 is a side view illustrating portions of another embodiment adhesive tape applicator in accordance with principles of the present disclosure and loaded with a roll of adhesive tape.
DETAILED DESCRIPTIONOne embodiment of anadhesive tape applicator20 in accordance with principles of the present disclosure is shown inFIGS. 1A and 1B. When loaded with a roll of adhesive tape (not shown), theapplicator20 facilitates single-handed application and cutting of a length of tape from the roll. Theapplicator20 includes ahousing assembly22, a carriage assembly24 (referenced generally inFIG. 1B) and a blade assembly26 (hidden inFIG. 1B). Details on the various components are provided below. In general terms, however, thehousing assembly22 maintains thecarriage assembly24 and theblade assembly26. More particularly, thecarriage assembly24 is slidable relative to thehousing assembly22, with articulation of thecarriage assembly24 effectuating movement of theblade assembly26. For example, during a cutting operation, ablade28 provided with theblade assembly26 is caused to sever a length of tape extending along a tape path defined by theapplicator20. In this regard, theapplicator20 incorporates one or more features described below that interface with the tape (apart from the blade28) during application and cutting operations so as to prevent the tape from sticking to the blade or other components. These tape handling features account for possible contact with opposing, adhesive-bearing major surfaces of the tape such that theapplicator20 is highly useful with virtually any adhesive tape format, including double-sided adhesive tape.
Housing Assembly22Thehousing assembly22 includes ahousing40 and anapplication roller42. Thehousing40 has an open interior for maintaining various other components and, as best shown inFIG. 1B, defines atape dispensing opening44 and an optionalauxiliary opening46. As described in greater detail below, theapplication roller42 is rotatably mounted to thehousing40 adjacent thetape dispensing opening44. Where provided, theauxiliary opening46 facilitates user interface with thecarriage assembly24.
In some embodiments, thehousing40 is formed or defined by first andsecond housing sections50,52. Thehousing sections50,52 are configured to be releasably mated to one another (e.g., snap fit) in collectively defining thehousing40, with removal of thesecond housing section52 from the first housing section50 (or vice-versa) permitting user access to an interior of the housing40 (e.g., for removing or loading a roll of tape (not shown)). In the mated state, thehousing sections50,52 collectively define an exterior shape orperimeter60 of thehousing40. With reference to an intended orientation of theapplicator20 during use, the shape orperimeter60 can include afront side62, arear side64, abottom side66, and atop side68. Due to the mated construction, the following descriptions of these exterior features60-68 relative to thefirst housing section50 apply equally to thesecond housing section52.
An interior of one embodiment of thefirst housing section50 is shown in greater detail inFIG. 2. Thefirst housing section50 defines portions of thefront side62, therear side64, thebottom side66, and thetop side68. As generally indicated, thetape dispensing opening44 is formed or defined at an intersection of thefront side62 and thebottom side66, whereas theauxiliary opening46 is defined along thetop side68. In some embodiments, thebottom side66 can be substantially flat (i.e., within 10 percent of a truly flat surface), promoting sliding movement of the housing section50 (and thus of the housing40 (FIG. 1B) as a whole) along a substrate surface.
Thefirst housing section50 can provide various features that facilitate engagement with other components of the applicator20 (FIG. 1A). In this regard, the engagement features can be defined as projecting inwardly (i.e., out of the page ofFIG. 2) from a side wall70. For example, thefirst housing section50 can include a spindle72 (or other structure such as a collet) for rotatably receiving the application roller42 (FIG. 1B). In addition, thefirst housing section50 can form or define arail74 configured to slidably maintain the carriage assembly24 (FIG. 1A). Therail74 can assume a variety of forms and in some embodiments can be viewed at defining first-third sections76-80. Thesecond section78 is located intermediate the first andthird sections76,80, and is bounded by opposingshoulders82,84. Theshoulders82,84 are configured to capture a biasing device of thecarriage assembly24 as described below, and can assume a variety of forms. In some embodiments, theshoulders82,84 are defined as inward projections (e.g., out of the page ofFIG. 2) from therail74. Astop tab86 is optionally formed along thefirst section76 and can be defined as an inward projection from a face of therail74 in a direction opposite the side wall70. As made clear below, thestop tab86 serves as a forward stop to sliding movement of thecarriage assembly24 along therail74.
One or more blade assembly engagement features90 can also be provided with, or assembled to, thefirst housing section50. In general terms, the bladeassembly engagement feature90 is configured in accordance with complimentary features of the blade assembly26 (FIG. 1A) to establish a pivotable mounting of theblade assembly26 relative to the first housing section50 (and thus relative to the housing40 (FIG. 1A) upon final assembly). In some embodiments, the bladeassembly engagement feature90 is a post projecting from the side wall70, although a variety of other pivotable connection constructions are also acceptable.
Returning toFIG. 1A, thesecond housing section52 can include or incorporate one or more features that facilitate mounting of thecarriage assembly24 and/or theblade assembly26. In some embodiments, however, the mounting features are provided with only one of thehousing sections50,52 such that thehousing sections50,52 can be disassembled from one another while maintaining the mounted arrangement of thecarriage assembly24 and theblade assembly26 relative to thefirst housing section50.
Theapplication roller42 is generally configured to press adhesive tape exiting theapplicator20 onto a substrate surface. Theapplication roller42 is configured in accordance with mounting features of thehousing sections50,52 (e.g., the spindle72 (FIG. 2)) so as to be rotatably mounted to thehousing40. While theapplication roller42 can assume a variety of forms, in some embodiments theapplication roller42 is configured to readily release from adhesives conventionally employed with adhesive tapes, such as pressure sensitive adhesives. This optional easy release attribute can be provided in various manners, such as via material(s) and/or physical features of an outer surface of theapplication roller42. For example, one exemplary embodiment of theapplication roller42 in accordance with principles of the present disclosure is shown inFIGS. 3A and 3B, and includes amandrel100 and asleeve102. Themandrel100 can be a tube or hub-type body configured to be rotatably mounted over thespindle72 or other mounting component provided with the housing40 (FIG. 1A). Thesleeve102 is coaxially received over themandrel100, and establishes anouter surface104 of theapplication roller42 upon final assembly. In some embodiments, thesleeve102 is formed of a material that readily releases from, or does not otherwise adhere to, adhesives (e.g., pressure sensitive adhesives) commonly used with adhesive tapes. For example, thesleeve102 can be formed of a silicone material. Other adhesion-resistant or non-stick materials or coatings are also acceptable, such as fluoropolymers, coated elastomeric materials, etc. In addition, thesleeve102 can form theouter surface104 to have reduced surface contact with a flat surface otherwise in contact with theouter surface104. For example, thesleeve102 can form or comprise a plurality of spaced apart,circumferential ribs106. As shown inFIG. 3C, when theapplication roller42 is directed into contact with a relatively flat surface S (e.g., a major surface of an adhesive tape otherwise being applied to a flat substrate surface), the surface S contacts theouter surface104 of theapplication roller42 only at theribs106. In other words, theapplication roller42 is not in contact with the surface S at the spacings between theribs106, thus reducing the overall surface area of contact (and surface energy). Other outer surface texturing formats are also envisioned. Regardless, by minimizing the surface contact, optionally in combination with use of a release material (e.g., silicone), an adhesive-bearing surface placed into contact with theapplication roller42 is unlikely to “stick” to theouter surface104.
Carriage Assembly24Returning toFIGS. 1A and 1B, thecarriage assembly24 includes acarriage body120, ahub122, anidler roller124, and anoptional biasing device126. In general terms, thecarriage body120 maintains thehub122 and theidler roller124, and is slidably coupled to thehousing40. Thebiasing device126, where provided, biases thecarriage body120 to a first position relative to thehousing40, and can be a coil spring. Further, thebiasing device126 permits sliding movement of thecarriage body120 in response to a user-applied force, such as during a cutting operation. In this regard, thecarriage assembly24 can further optionally include anactuator128 coupled to thecarriage body120 and configured to facilitate actuation of thecarriage assembly24 by the user as described in greater detail below.
Thecarriage body120 and thehub122 are shown in greater detail inFIGS. 4A and 4B. As implicated by the views, in some embodiments thecarriage body120 and thehub122 can be integrally formed. Regardless, thecarriage body120 includes apanel140 that is generally sized and shaped to be received within the housing40 (FIG. 1A). Thepanel140 defines a front face142 (FIG. 4A) and a rear face144 (FIG. 4B), and forms or includes various features that facilitate mounting with thehousing40. For example, first and second pairs ofguide tabs146,148 can be formed as projections from therear face144, each defining achannel150 sized to slidably receive the rail74 (FIG. 2). Aslot152 is formed through a thickness of thepanel140, and is sized to slidably receive the stop tab86 (FIG. 2). In some embodiments, ashelf154 projects from therear face144 in alignment with theslot152. Theshelf154 in combination with a structure of a pocket156 (described in greater detail below) further serves to slidably engage therail74. Alternatively, thecarriage assembly24 can incorporate other features for effectuating slidable engagement with thehousing40.
With embodiments incorporating the spring biasing device126 (FIG. 1A), thecarriage body120 includes or forms aframe158 sized and shaped to capture thespring126. Theframe158 projects from thefront face142, for example in a region of thehub122, with thepanel140 forming anaperture160 that is aligned with theframe158 for reasons made clear below. Further, theframe158 can form or define agroove162 that facilitates assembly with the housing40 (FIG. 1A).
In addition to providing features that promote mounting with the housing40 (FIG. 1A), thecarriage body120 can form or include additional features that facilitate articulating connection with the blade assembly26 (FIG. 1A). For example, thepocket156 is formed as a depression in thefront face142 of thepanel140, and defines abearing surface164. Thepocket156 is sized and shaped to slidably receive a corresponding component of theblade assembly26 as described below, and can include anotch166 through a thickness of thepanel140 for slidably receiving other components. Finally, thecarriage body120 can include or define acamming member168 and asupport block170 as inward projections from thefront face142. Thecamming member168 can assume a variety of forms, and is generally constructed to slidably interface with a corresponding component of theblade assembly26 as described below. Thesupport block170 is aligned with, but spaced from, thecamming member168, and is also configured to interface with theblade assembly26 in a prescribed manner.
Other mounting features optionally provided with thecarriage body120 can include aspindle180 or similar structure projecting from thefront face142 and configured to rotatably maintain the idler roller124 (FIG. 1A). Abracket182 can be formed or provided along thefront face142 and is generally constructed for assembly with the actuator128 (FIG. 1A).
Thecarriage body120 can optionally form or provide additional features for interfacing with a length of adhesive tape (not shown) otherwise extending from a region of thehub122. For example, in some embodiments, aplatform190 projects from thefront face142 of thepanel140 and provides a surface for selectively interfacing with an adhesive tape, for example during a cutting operation. In this regard, theplatform190 optionally forms or defines atextured surface192, for example the spaced apart ribbed format shown.
Thehub122 projects from thefront face142 of thepanel140, and is generally sized and shaped to rotatably maintain a roll of adhesive tape (not shown). While thehub122 is shown as being affixed to thepanel140, other configurations appropriate for rotatably maintaining a roll of adhesive tape are equally acceptable.
Returning toFIG. 1A, theidler roller124 is configured for rotatable mounting to thespindle180 of the carriage body120 (or other optional mounting component), and is generally constructed to selectively interface with a length of adhesive tape. In some embodiments, an outer surface of theidler roller124 readily releases from adhesives commonly employed with adhesive tapes (e.g., pressure sensitive adhesives), and thus can have any of the formats described above with respect to the application roller42 (e.g., the attributes described above with respect to thesleeve102 inFIGS. 3A-3C).
Theactuator128 can assume any form conducive to receiving a user-applied force, and transferring the force into a sliding motion of thecarriage body120 relative to thehousing40. While theactuator128 is shown as being a component formed apart from thecarriage body120, in other embodiments theactuator128 is integrally formed by or with thecarriage body120.
Blade Assembly26Theblade assembly26 is shown in greater detail inFIG. 5, and includes theblade28, ablade arm200, and at least onepressing finger202. In general terms, theblade arm200 maintains theblade28 and the pressing finger(s)202, and is configured for pivoting connection with the housing40 (FIG. 1A).
With additional reference toFIG. 6A-6C, theblade arm200 defines aleading end210, a trailing orpivot end212, anupper face214, and alower face216. Theleading end210 is configured to facilitate mounting of theblade28, and can form or provide one ormore rivet bodies218. Thepivot end212 is defined opposite theleading end210, and is configured to establish pivotable mounting with a corresponding component of the housing assembly22 (FIG. 1A). For example, the trailingend212 can include abore220 sized to receive the post90 (FIG. 2). Regardless, a pivot axis P about which theblade arm200 rotates or pivots upon final assembly is defined. Theupper face214 is shaped to effectuate a desired cammed interface of theblade arm200 with the carriage assembly camming member168 (FIG. 4A). For example, and as best shown inFIG. 6C, theupper face214 can be relatively flat or planar adjacent theleading end210, and forms or defines aninclined region230 adjacent thepivot end212. For reasons made clear below, acrank arm232 projects from the pivot end212 (i.e., away from the lower face216), and compliments (in combination with other features) the camming-induced articulation motion effectuated along theupper face214.
Returning toFIG. 5, theblade arm200 is further configured to facilitate mounting of the pressing finger(s)202. In some embodiments, the pressing finger(s)202 is provided as part of apressing finger structure240 that includes a plurality of thepressing fingers202 projecting from abase242. With this in mind, theblade arm200 can form acavity244 sized and shaped to frictionally maintain the base242 in a manner that arranges thepressing fingers202 as outward projections from thelower face216. In some embodiments, acap246 can further be provided that is assembled to thecavity244 adjacent the base242 so as to be contiguous with theupper face214 upon final assembly.
Features of thepressing finger structure240 are described in greater detail below with reference to theblade arm200 upon final assembly. In general terms, however, and with additional reference toFIGS. 7A and 7B, thefinger structure240 includes thebase242 and the at least onepressing finger202. With the exemplary embodiment ofFIGS. 7A and 7B, three of thepressing fingers202 are provided, including a firstpressing finger202alongitudinally offset from second and thirdpressing fingers202b,202c.In other embodiments, a greater or lesser number of thepressing fingers202 can be included, including only a single one of the pressing fingers (e.g., the firstpressing finger202a). The pressing finger(s)202 extends in an angular fashion from thebase242, with the angular arrangement of the pressing finger(s)202 relative to the base242 generating a desired spatial arrangement of the pressing finger(2)202 relative to theblade arm200 upon final assembly. As described below, the pressing finger(s)202 is configured to interface with a tensioned, adhesive-bearing surface, for example an adhesive surface of an adhesive tape, and in some embodiments is flexible (e.g., elastically deformable) and exhibits an easy or low release characteristic. For example, the pressing finger(s)202 can be formed of silicone, a fluoropolymer, or coated elastomeric materials (e.g., a plasma coating creating the low release coating or non-stick surface), etc.; in other embodiments, an entirety of thefinger structure240 is formed of the flexible, low release material (or low release coating). Elastic flexibility of the pressing finger(s)202 can alternatively be described relative to a rigidity of theblade arm200. Theblade arm200 is more rigid or less flexible than the pressing finger(s)202 (e.g., theblade arm200 is a molded, rigid plastic material whereas the pressing finger(s)202 is a deformable silicone body). Thus, the pressing finger(s)202 will elastically deform or deflect while theblade arm200 remains rigid when subjected to an identical force. A similar comparison can be made between a flexibility of the pressing finger(s)202 and a flexibility of theblade28. The pressing finger(s)202 is significantly more flexible than therigid blade28.
Returning toFIG. 5, theblade28 can assume a variety of forms, and in some embodiments includes two (or more)blade segments250,252 that combine to define theblade28 upon final assembly. In other embodiments, theblade28 can be a homogeneous, integral structure.
Final construction of theblade assembly26 is shown inFIGS. 8A and 8B. Theblade28 is affixed to theleading end210 of theblade arm200, and extends downwardly relative to thelower face216. In this regard, theblade28 terminates at ablade tip260 opposite theblade arm200. Thepressing fingers202a-202calso project from thelower face216 of theblade arm200, and each terminate at acontact end262 opposite theblade arm200. Thepressing fingers202a-202care generally arranged to interface with a length of tape otherwise being cut by theblade28 as theblade arm200 is rotated about the pivot axis P. These attributes are facilitated, for example, by an angular orientation of thepressing fingers202a-202c,as well as a length of thepressing fingers202a-202c.For example, at least with respect to the firstpressing finger202a,an included angle θ is established by a plane of theblade28 and a plane of the firstpressing finger202a.In some embodiments, the included angle θ is at least 5 degrees, and in some embodiments is at least 10 degrees. The second and thirdpressing fingers202b,202ccan be arranged to establish a similar included angle relative to theblade28. Regardless, to better ensure that thecontact end262 of at least the firstpressing finger202acontacts adhesive tape in conjunction with theblade28 with rotation of theblade arm200 about the pivot axis P, the firstpressing finger202aextends an appreciable distance from thelower face216, generally commensurate with a longitudinal location of theblade tip260. In other embodiments, a length of the firstpressing finger202acan be identified relative to an articulation plane A defined by theblade tip260 and the pivot axis P. The firstpressing finger202apasses through or intersects the articulation plane A. This geometry better ensures that thecontact end262 of the firstpressing finger202awill contact a structure “behind” the blade tip260 (to the right relative to the orientation ofFIG. 8B) as theblade arm200 is rotated above the pivot axis P (counterclockwise relative to the orientation ofFIG. 8B).
Applicator AssemblyFIG. 9A illustrates thecarriage assembly24 mounted to thefirst housing section50. Thecarriage body120 is slidably connected to therail74, for example via the pairs ofguide tabs146,148 (FIG. 4B). The spring (or other biasing device)126 is disposed within theframe158, and is captured at opposing ends thereof by the first andsecond shoulders82,84 (it being understood that thefirst shoulder82 is hidden in the view ofFIG. 9A, but is illustrated inFIG. 2). Thesecond shoulder84 projects beyond thespring126 into abutment with thehub122 and is slidably disposed within thegroove162. Thestop tab86 is slidably disposed within theslot152. Thepost90 is located within thenotch166. Theactuator128, where provided, is assembled to thecarriage body120 and is arranged within theauxiliary opening46. With this construction, thespring126 biases thecarriage body120 to the first or application state ofFIG. 9A. Thecarriage body120 can be transitioned to a second or cut state ofFIG. 9B in response to a force placed upon theactuator128 that in turn causes thecarriage body120 to slide along the rail74 (i.e., relative to the orientation ofFIGS. 9A and 9B, thecarriage body120 is caused to move generally to the right (toward the rear side64) in transitioning from the application state (FIG. 9A) to the cut state (FIG. 9B)). Thestop tab86 serves as a forward stop to further sliding movement of thecarriage body120. Upon removal of the actuation force, thecarriage assembly24 self-returns to the first or application state ofFIG. 9A via thespring126.
FIG. 10A illustrates mounting of theblade assembly26 to thecarriage assembly24 and the first housing section50 (and reflects the application state of the applicator20). Thepivot end212 of theblade arm200 is rotatably coupled to the post90 (hidden inFIG. 10A but shown, for example, inFIG. 9A) of thefirst housing section50. Thecrank arm232 is located within thepocket156. Thecarriage assembly24 retains theblade arm200 in the spatial arrangement shown via thecamming member168 and thesupport block170. More particularly, thecamming member168 engages or is slightly spaced from theupper face214 of theblade arm200, whereas thesupport block170 engages or is slightly spaced from thelower face216. Thus, theblade arm200 is prevented from freely rotating about the pivot axis P relative to thecarriage body120. In the first or application state ofFIG. 10A, theblade tip260 and the pressing finger contact ends262 are spatially located away from a tape path defined by and between the application andidler rollers42,124 as described below.
Transitioning of thecarriage body120 from the application state to the cut state effectuates articulation of theblade assembly26 as reflected byFIG. 10B. In particular, because theblade arm200 is spatially connected to thefirst housing section50 via the post90 (FIG. 9A), theblade arm200 does not slide rearwardly with thecarriage body120. However, as the bearing surface164 (hidden inFIG. 10B, but shown inFIG. 10A) of thepocket156 contacts thecrank arm232, and as thecamming member168 slides along theinclined region230 of the blade armupper face214, theblade arm200 is caused to pivot or rotate about the pivot axis P (counterclockwise relative to the orientation ofFIGS. 10A and 10B), in turn causing theblade tip260 and the pressing finger contact ends262 to pass through a tape path defined by and between the application andidler rollers42,124 as described below.
As a point of reference, the various components and mechanisms described above for effectuating articulation of theblade tip260 and the pressing finger contact ends262 relative to the application andidler rollers42,124 (and thus relative to the tape path defined by therollers42,124) are but one acceptable embodiment. A variety of other components, mechanisms and/or assembly techniques can be employed. Features of the present disclosure relate to the manners in which the pressing finger(s)202 interface with the adhesive tape during the cutting operation formed by theblade28, as well as an optional low or easy release adhesive surface interface established along the application andidler rollers42,124.
Methods of UseFIG. 11A illustrates, in simplified form, anadhesive tape roll300 rotatably mounted to thehub122, with theapplicator20 in the initial or application state. As a point of reference, systems of the present disclosure constitute theapplicator20 loaded with thetape roll300. A length ofadhesive tape302 extends from theroll300 along a tape path T defined, at least in part, by the application andidler rollers42,124. Theadhesive tape302 otherwise comprising theroll300 can assume a variety of forms, and generally include a base film or film structure defining opposing, first and secondmajor surfaces304,306. One or both of themajor surfaces304,306 can carry an exposed adhesive (e.g., pressure sensitive adhesive coating). That is to say, theadhesive tape302 can be a single-sided or double-sided adhesive tape. In the application state ofFIG. 11A, the tape path T includes the firstmajor surface304 in contact with theidler roller124, and the secondmajor surface306 in contact with theapplication roller42. With this arrangement, the length oftape302 extends from theroll300, along the tape path T, and is available for application to a substrate surface via thetape dispensing opening44.
For example, as shown inFIG. 11B, with theapplicator20 in the application state, aleading end310 of theadhesive tape302 is adhesively secured or tacked to asubstrate surface312, establishing a tackedregion314. A user grasping theapplicator housing40 manually applies pressure onto theapplication roller42 while simultaneously pulling thehousing40 away from theleading end310. With this technique, theadhesive tape302 is caused to unwind from theroll300 and successively progress along the tape path T with a now longer tackedregion314 being secured onto thesubstrate surface312 as shown inFIG. 11C. Notably, theapplication roller42 readily rolls along the secondmajor surface306 during application of thetape302 to thesubstrate surface312. With embodiments in which the secondmajor surface306 carries an exposed adhesive, the release attributes of theapplication roller42 as described above (e.g., forming an outer surface of theapplication roller42 from silicone or other low release material and/or inclusion of the circumferential ribs or other texturing), the adhesive-bearing secondmajor surface306 will not stick to theapplication roller42.
Once a desired length of thetape302 has been applied to thesubstrate surface312, theapplicator20 is operated to cut thetape302. Prior to initiation of the cutting operation, theadhesive tape302 is generally held in tension between the application andidler rollers42,124 and is identified as anintermediate tape segment320 inFIG. 12A. Theblade28 and the pressing finger(s)202 are spaced from the intermediate tape segment320 (and the tape path T). The carriage assembly24 (FIG. 1A) is then transitioned toward the cut state by a user-applied force on the actuator128 (FIG. 1A) as described above. As theblade arm200 is pivoted to bring theblade tip260 into contact with thetape302, the pressing finger(s)202 also interfaces with theadhesive tape302. For example, in the arrangement ofFIG. 12B (otherwise schematically illustrating an intermediate stage of operation as theapplicator20 is transitioned toward the cut state), theblade arm200 has been rotated or maneuvered to bring theblade28 and the pressing finger(s)202 nearly into contact with the secondmajor surface306 of theadhesive tape302. Recalling that theblade arm200 is rotating about the pivot axis P, thecontact end262 of the firstpressing finger202acontacts theadhesive tape302 just prior to theblade tip260 as shown. In other embodiments, theblade28 and the firstpressing finger202acontact theadhesive tape302 simultaneously, or theblade28 may contact theadhesive tape302 immediately before the firstpressing finger202a.
With further rotation of the blade arm200 (i.e., transitioning from the arrangement ofFIG. 12B to the successively next intermediate stage of operation arrangement ofFIG. 12C), the firstpressing finger202amore robustly contacts theintermediate tape segment320. Because theintermediate tape segment320 is under tension between the application andidler rollers42,124, theadhesive tape302 exerts a resistance force onto the firstpressing finger202a.The angled orientation of the firstpressing finger202ain combination with the flexible material employed for the firstpressing finger202aresults in the firstpressing finger202adeforming or deflecting in response to this resistance. That is to say, the firstpressing finger202adoes not rigidly retain its linear shape, but instead slightly deforms, with thecontact end262 deflecting toward theblade28. In the state ofFIG. 12C, theblade tip260 has pierced through a portion of theadhesive tape302, but theadhesive tape302 has not yet been completely severed. As a point of reference, theblade tip260 can have the tapered shape shown inFIG. 8A, increasing in width from a central point; while a complete width of theblade tip260 is commensurate with a width of theadhesive tape302, in the initial stages of cutting (e.g., the arrangement ofFIG. 12C), only a portion (e.g., the central point) of the complete width of theblade tip260 has passed through theadhesive tape302, such that the entire width of theadhesive tape302 has not been entirely cut. This relationship is reflected inFIG. 12D, that otherwise provides a simplified, enlarged cross-section of theblade tip260 and theadhesive tape302 corresponding with the state ofFIG. 12C. As shown, a portion of theblade tip260 has initially pierced through theadhesive tape302. A width WCof the cut formed by theblade tip260 is less than a width WTof theadhesive tape302. Thus, theadhesive tape302 is still intact and is not yet completely severed. As a result, and returning toFIG. 12C, a tension in theadhesive tape302 remains, causing deformation of the firstpressing finger202aas described above.
Elastic deflection or deformation of the firstpressing finger202acontinues with further rotation of theblade arm200, with the blade arm rotation simultaneously directing theblade tip260 to progressively pierce through an increasing portion of the width WT(FIG. 12D) of thetape302. This arrangement is shown inFIG. 12E. Notably, where the firstpressing finger202ais formed of a low release material or coating (e.g., silicone), the contact end262 (and other exterior surfaces of the firstpressing finger202a) readily slides along the secondmajor surface306 of theadhesive tape302 in connection with the above-described deflection, even when theadhesive tape302 is a double-sided adhesive tape (i.e., the secondmajor surface306 carries an exposed adhesive).FIG. 12E further reflects that the secondpressing fingers202bcan also contact the tensionedadhesive tape302 and, due to a flexible construction, elastically flex or deflect. Notably, as theblade tip260 is driven toward (and through) theadhesive tape302, theadhesive tape302 can be forced to deflect downwardly (relative to the orientation ofFIG. 12E) at theblade tip260 interface, and, due to various component geometries, come into contact with theplatform190.
At the end of the cutting motion, theblade tip260 has progressed through an entire thickness and width of thetape302 as shown inFIG. 12F, severing theintermediate tape segment320. Once severed, theadhesive tape302 can effectively be defined as having an appliedportion330 downstream of the cut line that is now applied to thesubstrate surface312. A remaining portion332 (upstream of the cut line) is still connected to, or is part of, the tape roll300 (FIG. 11A), and terminates at aleading end334. The firstpressing finger202aserves to prevent theleading end334 from extending along, or “riding up” on theblade28, it being noted that once theadhesive tape302 has been severed, the tensioned resistance force imparted upon the firstpressing finger202ais removed, and the firstpressing finger202aresiliently self-reverts back to its natural shape as shown. The second and thirdpressing fingers202b,202ccan force theadhesive tape302 onto theplatform190. Thus, an entirety of the remainingportion332, including the “new”leading end334, is held away from theblade28. As thecarriage assembly24 is allowed to revert back to the first or application state, theblade arm200 is caused to again pivot, bringing theblade28 and thepressing fingers202a-202cout of the tape path T as shown inFIG. 12G. In this regard, even if the secondmajor face306 carries an exposed adhesive, the remainingportion332 of theadhesive tape302 will not unexpectedly “move” with theblade assembly26. As described above, the remainingportion332 is spaced from, and does not contact, theblade28. Further, while one or more of thepressing fingers202 are in direct contact with the secondmajor surface306, the low adhesion/release material (e.g., silicone) construction of thepressing fingers202 has minimal or no adhesion with the exposed adhesive. Along these same lines, the firstmajor surface304 may lightly adhere to theplatform190, allowing thepressing fingers202 to readily release from the secondmajor surface306 as theblade arm200 articulates thepressing fingers202 away from thetape302. Theplatform190 simultaneously directs theleading end334 to thetape dispensing opening44 such that theleading end334 is now readily available for subsequent adhesive tape application operation.
Use of theadhesive tape applicator20 in applying theadhesive tape302 to thesubstrate surface312 can optionally entail thebottom side66 readily sliding along, or in close proximity to, the substrate surface312 (under circumstances where thesubstrate surface312 is relatively flat). In some embodiments, the substantially flatbottom side66 also facilitates temporary storage of theapplicator20 in the upright orientation on the substrate surface312 (e.g., during periods of non-use, theapplicator20 is upright, with thebottom side66 resting on the substrate surface312).
With the alternativeadhesive tape applicator20′ ofFIG. 13, a stand-off device400 is included that lifts theapplication roller42 away from thesubstrate surface312 during periods of non-use. The stand-off device400 can assume a variety of forms, and in some constructions includes ahead402 and a leaf spring orother biasing device404. Theleaf spring404 connects thehead402 to thehousing40. In a normal state of theleaf spring404, thehead402 is located such that a leadingface406 is located outside of thehousing40. In the upright storage orientation ofFIG. 13, then, theapplicator20′ is maintained upright relative to thesubstrate surface312, resting on the leadingface406 of thehead402 andrear corner408 of thehousing40. As shown, theapplication roller42 as well as theleading end310 of theadhesive tape302 is held above or away from thesubstrate surface312.
When a user desires to apply the adhesivetape leading end310 to thesubstrate surface312, a downward force is applied to thehousing40 with the user's hand. Once sufficient force is applied to overcome a bias of the leaf spring404 (i.e., via a resistance force experienced by thehead402 at the substrate surface312), thehead402 retracts into thehousing40. As a result, theleading end310 is brought to contact with thesubstrate surface312, including theapplication roller42 pressing on to theadhesive tape302. Application and cutting operations can then be performed as described above.
The adhesive tape applicators, system and methods of the present disclosure provide a marked improvement over previous designs. Adhesive tapes, including double-sided adhesive tapes, are readily applied to a substrate surface and subsequently cut with single-handed operation. In this regard, the flexible pressing finger(s) provided with the tape applicators ensure consistent, jam-free operation, preventing the adhesive tape from adhesively “catching” on the cutting blade. Other optional features, such as low surface energy contact rollers, further enhance handling of adhesive-bearing tape surfaces.
Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes can be made in form and detail without departing from the spirit and scope of the present invention.