US20070138743A1 - Card shoe with force resist mechanism - Google Patents

Abstract

A card shoe for holding and distributing playing cards during a playing card game, where the card shoe can hold multiple decks of playing cards. The card shoe includes a wedge assembly that biases playing cards toward a playing card extraction opening. Gravity and/or other forces, for example a spring force, may bias the wedge assembly. The wedge assembly includes a wedge block and a roller subassembly. The roller subassembly includes a shaft, a clutch assembly, and a roller. In one embodiment, the clutch assembly and roller are mounted on an offset portion of the shaft so that the roller can be adjusted relative to a bottom of the wedge block. The clutch assembly permits the roller to roll in only one direction. The clutch assembly locks onto the shaft if a force is exerted which would tend to push the wedge block away from the playing card extraction opening.

Description

CROSS-REFERENCE TO RELATED APPLICATION
• This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 60/752,126 filed Dec. 19, 2005.
BACKGROUND OF THE INVENTION
• 1. Field of the Invention
• This description generally relates to the field of table gaming, and more particularly to card holding devices, for example card shoes that hold a number of cards during a playing card game and allow cards to be extracted from the card shoe one at a time.
• 2. Description of the Related Art
• Conventional card shoes10 are typically sized to receive two to eight standard decks of playing cards, with fifty-two (52) playing cards per standard playing card deck.
• FIG. 1 shows a conventional,non-automated card shoe10 that includes ahousing12, a playingcard support surface14, and aplaying card wedge16. The housing includes an opening18 where playing cards are extracted one at a time during a playing card game. Thehousing12 includes a playingcard support surface14 sloping at adownward angle20 going from the rear of thehousing12 to the front. The playingcard support surface14 supports the playing cards and theplaying card wedge16. Theplaying card wedge16 includes aslanted surface22 that skews or offsets the playing cards in thehousing12 relative to one another. Anoptional roller24 may be rotationally coupled to theplaying card wedge16 to allow theplaying card wedge16 to easily move down the playingcard support surface14. The playing cards are compressed between theslanted surface22 of theplaying card wedge16 and a complementary, slanted front cover26 of thehousing12. Thedownward angle20 of the playingcard support surface14 takes advantage of gravity to bias the playing cards toward the front of thehousing12 under their own weight as well as under the weight of theplaying card wedge16.
• Another type of card shoe, which is not illustrated, is similar to the above-described card shoe except that a spring couples the playing card wedge to the housing. The spring operates alone or to augment the force of gravity by applying a force to bias the playing card wedge toward the opening in the housing. As the playing card wedge moves closer to the opening, the spring contributes less and less to the overall force biasing the playing card wedge toward the opening. At some point, before all the playing cards are removed from the card shoe, the force of the spring biasing the playing card wedge toward the opening becomes nearly negligible. This situation typically occurs when there are less than two decks (i.e., 104 playing cards) remaining in the card shoe.
• For either of the above-described conventional card shoes, the amount of force biasing the playing cards toward the opening in the card shoe decreases as fewer cards remain in the card shoe. In the first described card shoe, the weight of the playing cards contributes significantly to the force biasing the playing cards toward the front of the card shoe. Consequently, removing the playing cards from the card shoe results in less resistance as the dealer applies finger pressure to remove a playing card from the card shoe. Likewise, the reduction in the biasing force applied by the spring in the second type of card shoe, also results in less resistance as the dealer applies finger pressure to remove a playing card from the card shoe.
• The practical consequence of these conventional card shoes is that it becomes more difficult for the dealer to extract the remaining playing cards from the card shoe when there is little to no resistance or biasing force (e.g., (wedge mass+card mass) or (wedge mass+spring force+card mass)) against the finger pressure applied on the playing card by the dealer. Thus, the dealer is often unable to firmly contact the playing card present in the opening of the housing, thus making it difficult for the dealer's finger to frictionally grip and withdraw the next playing card to be dealt. As the dealer pushes harder against the playing card, the wedge reacts by moving rearward in the housing, further exacerbating the situation and causing the dealer to fish for the playing card in the card shoe. Accordingly, it would be desirable to have a card shoe that addresses the aforementioned problems and permits easier and smoother removal of the playing cards from the card shoe, without regard to the number of playing cards remaining in the card shoe.
SUMMARY OF THE INVENTION
• This description generally relates to a card shoes for holding and distributing playing cards during a playing card game. The card shoe typically holds between two (2) to eight (8) decks of playing cards. The card shoe includes a wedge that biases the playing cards toward a playing card extraction opening in the card shoe. The wedge can be acted on by gravity, another mechanical mechanism, for example a spring, and/or both. The wedge may include a shaft, a clutch assembly, and a roller, where the clutch assembly permits the roller to rotate in only one direction. When the clutch assembly locks onto the shaft, the wedge resists backward movement within the card shoe, which in turn allows a dealer to put pressure on the playing cards being extracted without pushing the wedge away from the playing card extraction opening.
• In one aspect, a wedge assembly to bias playing cards toward a playing card extraction opening of a card shoe includes a wedge block having a bottom surface and a card engagement surface positioned at an angle relative to the bottom surface, the wedge block receivable in the card shoe; and a roller subassembly having a roller rotationally coupled to the wedge block to be rotatable in a first rotational direction and lockable to substantially resist rotation in a direction opposite the first rotational direction.
• In another aspect, a wedge assembly to bias playing cards toward a playing card extraction opening of a card shoe includes a wedge block having a bottom surface and a card engagement surface positioned at an angle relative to the bottom surface, the wedge block receivable in the card shoe; and a roller subassembly having a shaft and a roller, the shaft coupled to the wedge block and having a first portion concentrically disposed about a first shaft axis and a second portion eccentrically disposed about a second shaft axis, the roller coupled to the second portion of the shaft and rotatable about the second shaft axis.
• In yet another aspect, a card shoe includes a housing having a playing card support surface and an opening, the playing card support surface arranged to receive and support a plurality of playing cards, the opening sized to permit extraction of at least some of the plurality of playing cards from the housing; and a wedge assembly having a wedge block and a roller subassembly, the wedge block includes a bottom surface and a card engagement surface positioned at an angle relative to the bottom surface, the wedge block is receivable in the housing of card shoe, the roller subassembly includes a roller rotationally coupled to the wedge block and rotatable in a first rotational direction and lockable to substantially resist rotation in a direction opposite the first rotational direction.
BRIEF DESCRIPTION OF THE DRAWINGS
• In the drawings, identical reference numbers identify similar elements or acts. The sizes and relative positions of elements in the drawings are not necessarily drawn to scale. For example, the shapes of various elements and angles are not necessarily drawn to scale, and some of these elements are arbitrarily enlarged and positioned to improve drawing legibility. Further, the particular shapes of the elements as drawn, are not intended to convey any information regarding the actual shape of the particular elements, and have been solely selected for ease of recognition in the drawings.
• FIG. 1 is an isometric, partially exploded view of a conventional card shoe having a card wedge, according to one illustrated embodiment.
• FIG. 2 is an isometric view of a card shoe having a wedge assembly and an opening for extracting playing cards from the card shoe, according to one illustrated embodiment.
• FIG. 3 is a top, front, left side isometric view of the wedge assembly ofFIG. 2 mounted to a roller subassembly.
• FIG. 4 is a bottom, front, left side isometric view of the wedge assembly ofFIG. 2.
• FIG. 5 is a cross-sectional view of the roller subassembly of the wedge assembly, according to one illustrated embodiment where the roller subassembly includes a shaft, a clutch assembly, and roller mounted on the shaft.
• FIG. 6 is a cross-sectional view of the shaft ofFIG. 5 illustrating an offset portion of the shaft in further detail.
• FIG. 7 is a right side plan view of the shaft ofFIG. 6.
• FIG. 8 is a cross-sectional view of the card shoe taken along line8-8 ofFIG. 2.
DETAILED DESCRIPTION OF THE INVENTION
• In the following description, certain specific details are set forth in order to provide a thorough understanding of various embodiments of the invention. However, one skilled in the art will understand that the invention may be practiced without these details. In other instances, well-known structures associated with card shoes have not been shown or described in detail to avoid unnecessarily obscuring the description.
• Unless the context requires otherwise, throughout the specification and claims which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense, that is as “including, but not limited to.”
• Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combinable in any suitable manner in one or more embodiments.
• The headings provided herein are for convenience only and do not interpret the scope or meaning of the claimed invention.
• This description generally relates to card shoes for holding and distributing playing cards during a playing card game. Card shoes are generally used in casinos and often hold between two (2) to eight (8) decks of playing cards. However, it is understood that some card shoes may hold a fewer or a greater number of playing cards. Further, some card shoes may be automated, employing electromechanical and/or electro-optical components to read machine-readable and/or human readable indicia carried by the playing cards.
• FIG. 2 shows acard shoe100 having ahousing102 and awedge assembly104, according to the illustrated embodiment. Thehousing102 includes a playingcard support surface106,sidewalls108, and afront cover110. The playingcard support surface106, thesidewalls108, and thefront cover110 form areceptacle111 configured to receive and support a number of playing cards (not shown). The playingcard support surface106 may or may not slope downward from the rear of thehousing102. As noted above, a sloped surface may take advantage of gravity as the sole or partial biasing force that urges the playing cards toward theopening112 of thehousing102.
• Thefront cover110 includes anopening112 from which a dealer can extract the playing cards from thecard shoe100. Theopening112 is sized to allow the dealer to place a finger or two onto the next playing card that is to be removed from thecard shoe100. The playingcard support surface106 can cooperate with thefront cover110 to skew or otherwise offset the playing cards relative to one another, which tends to increase the likelihood that playing cards are extracted one at a time from thecard shoe100. It is understood that sometimes, however, more than one playing card is extracted from thecard shoe100, whether done intentionally or because two playing cards become stuck together.
• Thehousing102 further includes a slot ortrack114. Thetrack114 can be sloped or otherwise configured to cause thewedge assembly104 to move forward, toward theopening112. One embodiment of the slopedtrack114 is best illustrated inFIG. 7. Aspring116 may be coupled toguides117,119 received in thetrack114. Theguides117 may be fixed to the housing, whereas theguides119 couple thewedge assembly104 to thespring116 and are operable to move along thetrack114. In one embodiment, thespring116 is an extension spring anchored proximate the front of thehousing102 that biases or urges thewedge assembly104 toward theopening112. In another embodiment, the spring is a compression spring anchored proximate the rear of thehousing102 that biases or urges thewedge assembly104 toward theopening112.
• FIGS. 3 and 4 show thewedge assembly104 having awedge block105 configured with a slopedengagement surface118 disposed between first and second side surfaces120. Thewedge assembly104 further includesguides119,122 extending from each of the first andsecond surfaces120. Theguides119 are coupled to the spring116 (FIG. 2) and may also be supported in thetrack114 of thehousing102 as mentioned above. Theguides122 may also be supported in thetrack114 of thehousing102 counteracting any overturning moment that may cause thewedge assembly104 to rotate about theguides119.FIG. 4 shows aroller124 of aroller subassembly125, which is part of thewedge assembly104, extending at least slightly below abottom surface126 of thewedge block105.
• FIG. 5 shows theroller subassembly125 in detail. Theroller subassembly125 includes theroller124, which is rotatably fixed to an anti-reversingclutch assembly126, which in turn is rotatably coupled to ashaft128. In one embodiment, theroller124 is made from a urethane material and press fit onto theclutch assembly126. Theclutch assembly126 may be an overrunning clutch or drawn cup roller clutch, such as or similar to those described in U.S. Pat. Nos. 3,994,377; 3,993,177; 3,993,176; 3,990,555; 3,972,573; 3,942,616; 3,937,312; and 3,937,311. This type ofclutch assembly126 permits theroller124 to freely rotate in a first direction, yet positively locks onto theshaft128 to substantially prevent reverse rotation (i.e., rotation that is counter or opposite to the first rotational direction) of theroller124.
• Theshaft128 includes atool engagement portion130 and a shaft centerline oraxis132. It is understood and appreciated that theshaft centerline132 is to be distinguished from a roller rotational centerline oraxis133, as illustrated and described in more detail below. During operation, theroller124 and portions of theclutch assembly126 rotate in unison on theshaft128 and about the rollerrotational axis133. In the illustrated embodiment, theshaft128 does not rotate relative to thewedge assembly104.
• FIGS. 6 and 7 show theshaft128 having afirst section134, asecond section136, and athird section138, where thesecond section136 is disposed between the first andthird sections134,138. In the illustrated embodiment, thesecond section136 is offset relative to theshaft axis132 and concentrically formed about the rollerrotational axis133. The first andthird sections134,138 are not offset, which means these sections are concentrically formed about theshaft axis132. The eccentricity of thesecond section136 is indicated by identifying that afirst radial depth140 of thesecond section136 extends less than asecond radial depth142 on an opposite side (i.e., 180 degrees) of thesecond section136. Since bothradial depths140,142 are measured from theshaft axis132, it is understood that thesecond section136 must be eccentrically formed about and/or offset relative to theshaft axis132. Theradial depths140,142 vary in height about the circumference of thesecond section136 of theshaft128.
• Thefirst section134 and thethird section138, on the other hand, are concentrically formed about and/or not offset relative to theshaft axis132. Theradial depths144,146, which are measured from theshaft axis132 are equivalent, thus it is understood that thefirst section134 and thethird section138 are concentric with respect to theshaft axis132 and with respect to one another.
• One purpose for eccentrically offsetting thesecond section136 is to allow for the adjustment of theroller124 beyond thebottom surface126 of the wedge block105 (FIG. 4). Adjusting theroller124 to protrude by a lesser or greater amount beyond thebottom surface126 is accomplished by engaging thetool engagement portion130 of theshaft128 with an appropriate tool, for example a screwdriver. Because theshaft128 is fixed to thewedge assembly104, theroller124 and portions of theclutch assembly126 rotate about thesecond section136 of theshaft128.
• FIG. 8 shows thecard shoe100 as thewedge assembly104 is moved along thetrack114. As the dealer removes each playing card, the biasing force of thespring116, the weight of thewedge assembly104, and/or the weight of the playing cards urges thewedge assembly104 toward thefront cover110. Theroller124 is free to rotate in a direction indicated by thearrow148. As the dealer applies pressure to the next card to be removed, the anti-reversingclutch assembly126 positively locks onto theshaft128 to substantially prevent reverse rotation of theroller124 and thus prevents thewedge assembly104 from moving away from thefront cover110 and theopening112 of thehousing102. Thesecond section136 of theshaft128 and the frictional engaging portion of theclutch assembly126 may be relatively dimensioned to achieve a desired amount of frictional locking of theclutch assembly126 onto thesecond section136 of theshaft128.
• Once all or a desired number of cards are removed from thecard shoe100, thewedge assembly104 can be reset in thecard shoe100. In one embodiment, thewedge assembly104 includes ahandle150 that can be used to separate theroller124 from the playingcard support surface106 of thecard shoe100. By lifting up on thehandle150, theroller124 will no longer be in contact with the playingcard support surface106 and thewedge assembly104 can be easily moved away from thefront cover110 and theopening112 to allow more playing cards to be loaded in thereceptacle111 of thecard shoe100.
• The various embodiments described above can be combined to provide further embodiments. All of the above U.S. patents, patent applications, provisional patent applications and publications referred to in this specification, to include, but not limited to U.S. Pat. Nos. 3,994,377; 3,993,177; 3,993,176; 3,990,555; 3,972,573; 3,942,616; 3,937,312; and 3,937,311; and U.S. Provisional Application No. 60/752,126, filed Dec. 19, 2005 are incorporated herein by reference in their entirety. Aspects of the invention can be modified, if necessary, to employ various systems, devices and concepts of the various patents, applications and publications to provide yet further embodiments of the invention.
• These and other changes can be made to the invention in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the invention to the specific embodiments disclosed in the specification and the claims, but should be construed to include all card shoes usable in the aspect of gaming and methods that operate in accordance with the claims. Accordingly, the invention is not limited by the disclosure, but instead its scope is to be determined entirely by the following claims.

Claims (26)

We claim:

1. A wedge assembly to bias playing cards toward a playing card extraction opening of a card shoe, the wedge assembly comprising:

a wedge block having a bottom surface and a card engagement surface positioned at an angle relative to the bottom surface, the wedge block receivable in the card shoe; and

a roller subassembly having a roller rotationally coupled to the wedge block to be rotatable in a first rotational direction and lockable to substantially resist rotation in a direction opposite the first rotational direction.

2. The wedge assembly ofclaim 1, further comprising:

a number of guides extending outwardly from wedge block to engage complementary structure on the card shoe.

3. The wedge assembly ofclaim 1 wherein the angle between the card engagement surface and the bottom surface of the wedge block is an acute angle.

4. The wedge assembly ofclaim 1, further comprising:

a shaft coupled to the wedge block, wherein the shaft includes a first portion concentrically disposed about a first shaft axis and a second portion eccentrically disposed about a second shaft axis.

5. The wedge assembly ofclaim 4 wherein the first shaft axis is offset from the second shaft axis.

6. The wedge assembly ofclaim 4 wherein the roller is rotationally coupled to one of the first or the second portions of the shaft.

7. The wedge assembly ofclaim 1 wherein a portion of the roller extends beyond the bottom surface of the wedge block.

8. The wedge assembly ofclaim 1, further comprising:

a handle coupled to the wedge block.

9. The wedge assembly ofclaim 8 wherein the handle is positioned on a rear portion of the wedge block.

10. The wedge assembly ofclaim 1, further comprising:

a clutch assembly coupling the roller to the wedge block, wherein the clutch assembly is lockable onto the shaft when the roller is urged in the direction opposite the first rotational direction.

11. A wedge assembly to bias playing cards toward a playing card extraction opening of a card shoe, the wedge assembly comprising:

a wedge block having a bottom surface and a card engagement surface positioned at an angle relative to the bottom surface, the wedge block receivable in the card shoe; and

a roller subassembly having a shaft and a roller, the shaft coupled to the wedge block and having a first portion concentrically disposed about a first shaft axis and a second portion eccentrically disposed about a second shaft axis, the roller coupled to the second portion of the shaft and rotatable about the second shaft axis.

12. The wedge assembly ofclaim 11 wherein the roller is coupled to the second portion of the shaft via a clutch assembly.

13. The wedge assembly ofclaim 12 wherein the clutch assembly is lockable onto the shaft to permit rotation of the roller in a first rotational direction and substantially resist rotation of the roller in a direction opposite the first rotational direction.

14. The wedge assembly ofclaim 11 wherein the first portion of the shaft is fixedly coupled to the wedge block to prevent rotation of the shaft relative to the wedge block.

15. The wedge assembly ofclaim 11, further comprising:

a number of guides extending outwardly from wedge block to engage complementary structure on the card shoe.

16. A card shoe comprising:

a housing having a playing card support surface and an opening, the playing card support surface arranged to receive and support a plurality of playing cards, the opening sized to permit extraction of at least some of the plurality of playing cards from the housing; and

a wedge assembly having a wedge block and a roller subassembly, the wedge block includes a bottom surface and a card engagement surface positioned at an angle relative to the bottom surface, the wedge block is receivable in the housing of card shoe, the roller subassembly includes a roller rotationally coupled to the wedge block and rotatable in a first rotational direction and lockable to substantially resist rotation in a direction opposite the first rotational direction.

17. The wedge assembly ofclaim 16, further comprising:

a number of guides extending outwardly from wedge block to engage complementary structure on the card shoe.

18. The wedge assembly ofclaim 16 wherein the angle between the card engagement surface and the bottom surface of the wedge block is an acute angle.

19. The wedge assembly ofclaim 16, further comprising:

a shaft coupled to the wedge block, wherein the shaft includes a first portion concentrically disposed about a first shaft axis and a second portion eccentrically disposed about a second shaft axis.

20. The wedge assembly ofclaim 19 wherein the first shaft axis is offset from the second shaft axis.

21. The wedge assembly ofclaim 19 wherein the roller is rotationally coupled to one of the first or the second portions of the shaft.

22. The wedge assembly ofclaim 16 wherein a portion of the roller extends beyond the bottom surface of the wedge block.

23. The wedge assembly ofclaim 16, further comprising:

a handle coupled to the wedge block.

24. The wedge assembly ofclaim 23 wherein the handle is positioned on a rear portion of the wedge block.

25. The wedge assembly ofclaim 16, further comprising:

a clutch assembly coupling the roller to the wedge block, wherein the clutch assembly is lockable onto the shaft when the roller is urged in the direction opposite the first rotational direction.

26. The card shoe ofclaim 16 wherein the opening in the housing of is sized to permit extraction of one playing card at a time.

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