Patent Application
20140138908
The present invention relates to apparatus and methods for the delivery of playing cards.
Playing cards are ordinarily provided to players in casino table card games either directly from a deck held in a dealer's hands or with cards removed by the dealer from a dealing shoe. The original dealing devices were little more than trays that supported the deck(s) of cards and allowed the dealer to remove the front card (with its back facing the table to hide the rank of the card) and deliver it to a player. Over the years, both stylistic and functional changes have been made to dealing shoes, which have been used for blackjack, poker, baccarat and other casino table card games.
Recently, card recognition technology has been incorporated into card shoes in order to recognize cards as they are dealt for various purposes, including for game play and for security reasons. U.S. patent application Ser. No. 11/417,894 (“the '894 application”), assigned to Shuffle Master, Inc. and published as US 2006/0279040 A1, discloses such technology and a card shoe including such technology, which is incorporated herein by reference.
In the card shoe disclosed in the '894 application, the use of a physical device or component on an interior surface of the card exit port of a shoe has been used to limit the number of cards that can be pulled from the shoe at one time. A declining card support surface and two opposing side walls are used for retaining a group of pre-shuffled cards. The card dealing shoe has an exit end with an opening for the manual removal of individual cards. Located proximate the exit end of the shoe can be a card recognition sensor and an associated card position sensor. A card feed limiter is provided to assure that only a single card exits the shoe at one time, and that the printed material on the card comes into close proximity to, or contact with, the sensors, facilitating the scanning of the card markings.
A fixed card feed limiter, such as that disclosed in the '894 application, could be improved. Its configuration can require an exertion of greater force by a dealer to extract a playing card from the shoe, depending on the thickness of the cards stored therein. Related to this, the fixed card feeder limiter may not be compatible with some playing cards, again, depending on card thickness and size. Furthermore, residue from the playing cards, which may accumulate after even limited use of the cards, can build up on the sensors for the card-reading system. This residue buildup can cause the system to malfunction, e.g., card misreading, and require service. A card dealing shoe that can accommodate varied card thickness and allow easy access to the card-reading sensors for cleaning or repair would be advantageous.
It would also be advantageous to provide a card shoe that permits more freedom of movement of cards as they are removed from the shoe, in a horizontal plane or parallel to the horizontal plane defining the playing surface as cards are being removed from the shoe, or in another plane that is angled with respect to the horizontal plane. This greater freedom of movement advantageously prevents the dealers from experiencing fatigue and repetitive stress injuries resulting from dealing cards repeatedly from a shoe.
An apparatus for handling cards has a card dispensing end. The card dispensing end has a base plate for supporting cards being manually removed from the card dispensing end. At least one upper plate is provided and is spaced apart from the base plate. The at least one upper plate has a substantially U-shaped opening for manual removal of cards positioned between the base plate and the upper plate. A space defined by the distance between the at least one upper plate and the base plate defines a slot. In one embodiment, the plates are parallel and a slot depth is substantially uniform for at least a length of a short side of a card. The slot is large enough for a card to pass through.
First and second spaced apart card guides define side edges of the slot. The first card guide is shorter in length than the second card guide, defining an offset in a first direction of travel of cards being removed. A terminal end of the second card guide extends beyond an end of the first card guide. The card guides are elongated and function to retain cards in an orientation that enables accurate sensing of card suit and rank. In one embodiment, the card guides function to force the short side of the cards to remain substantially perpendicular to a contact image sensor (CIS) line sensor.
A method of delivering a playing card from a playing card handling device is disclosed. The method comprises the step of providing a playing card delivery area defined by an upper plate with a finger slot, a base plate, a first card guide and a second spaced apart card guide. These components define an output slot through which playing cards can be slidably removed. The second card guide extends further in a first direction of travel of cards than the first guide. The method includes additional steps of placing a playing card in the playing card delivery area; a dealer moving a leading edge of the card in a first direction of travel until a trailing edge of the card clears a terminal end of the first card guide; and the dealer moving the card in at least one additional direction of travel before the card completely exists the card dispensing end.
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration, specific embodiments that may be practiced. These embodiments are described in sufficient detail to enable those of ordinary skill in the art to make and use them, and it is to be understood that structural, logical, or procedural changes may be made to the specific embodiments disclosed.
The present invention relates to a card shoe for storing and delivering cards for a card game and to methods of fabricating such a shoe. Although the card shoe can be a component of a card handling device useful for shuffling, card verification, card delivery and/or card storage, in an embodiment described herein, the exemplary shoe stores and functions as a card dispenser. Additionally, the shoe incorporates card-reading systems, a detachable and adjustable card feed limiter and a detachable protective cover. Of note, the card-reading systems of the present invention can be used with any conventional casino-style playing card of any brand. No special adaptation for the cards, such as imprinting with a bar code, is necessary for the reading systems to identify the suit and rank of such cards.
Embodiments of the invention are discussed below with reference to the figures, wherein like reference numbers denote like features. The front end of an exemplary embodiment of playing card dealing shoe 100 is shown in
Cards can be shuffled prior to insertion into the card dealing shoe 100, or, card dealing shoe 100 can be an integral part of a card shuffler, so that shuffled cards can be automatically delivered into the card dealing shoe 100 by the shuffler. An example of a shuffler with an integral shoe is fully disclosed in U.S. Pat. No. 6,254,096, assigned to Shuffle Master, Inc., the content of which is hereby incorporated by reference. Cards may be manually inserted into the exemplary card dealing shoe 100 and are manually removed by pressing downwardly on an outer surface of a card 501 through an inverted U-shaped opening 115 in the front end 105 of the card dealing shoe 100.
As shown in
The details of a control system contained within a shoe that provides game data and game outcome information to a game of baccarat is disclosed in U.S. application Ser. No. 11/417,894, filed May 3, 2006, now U.S. Pat. No. 7,593,544, issued Sep. 22, 2009.
As shown in
As shown in
In the embodiment of the invention as shown in
Although the embodiment illustrated in
As discussed above, in the embodiment shown in
Furthermore, since a preferred contact image sensor 150 typically functions best when a surface is being scanned, here the playing card, is in contact with the sensor 150, the card feed limiter 110 adjustability ensures that the gap 140 between the card feed limiter 110 and base plate 135 is ideal for such contact or close proximity. The sensors 150 can be those disclosed in the '894 application and the card dealing shoe 100 can be connected to a network via an I/O port or wirelessly, if desired. Information about the game being played and/or cards dealt can be transmitted over such a network.
An embodiment of the card dealing shoe 100 can further comprise a detachable protective cover 200 to cover the card feed limiter 110, as shown in
If desired, one or both of the card feed limiter 110 and the protective cover 200 can further comprise a shielding device 250 and 252 to hide the underlying card in the card dealing shoe 100, as shown in
Referring again to
An alternative embodiment is shown in
The above-described card dealing shoe 100 having the card feed limiter 110 and protective cover 200 can be used by a casino or dealer during the playing of a card game and may be tailored for cards of various sizes. Because not all cards used in casino games are the same, some are thicker or thinner than others. When an occasion arises for the card dealing shoe 100 to be used with a set of cards of a different thickness, the card dealing shoe 100 may be tailored for such use by changing the gap 140 (
The method of tailoring the card dealing shoe 100 includes removing the detachable protective cover 200 (preferably by hand and without the use of tools) and exposing the card feed limiter 110 and the fasteners 160, e.g., screws, attaching the card feed limiter 110 to the card dealing shoe 100. Then, the fasteners 160 attaching the card feed limiter 110 to the card dealing shoe 100 are loosened or removed, preferably loosened. Once the fasteners 160 are loosened, the card feed limiter 110 is moved relative to the card dealing shoe 100 along direction line 145, as shown in
The above-described card dealing shoe 100 having the card feed limiter 110 and protective cover 200 can be used with the card dealing shoe 100 so that the sensors 150 can be easily accessed for repair or cleaning through openings or apertures 112 in the card feed limiter 110. Such access is achieved by first manually removing the protective cover 200. Once the protective cover 200 is removed, sensors 150 can be accessed through the openings 112 in the card feed limiter 110. If greater access to the sensors 150 is required, the fasteners 160 attaching the card feed limiter 110 can be removed and the card feed limiter 110 may be removed from the card dealing shoe 100 so that the sensors 150 can be fully accessed for cleaning or repair.
The present technology also describes an ergonomic arrangement within the apparatus that provides benefits to the dealers and maintains all efficiencies of the card delivery apparatus, whether the arrangement is incorporated into a delivery shoe or a playing card shuffler having a delivery end thereon. For example, that ergonomic technology can be generally described (separately, or in combination with the structure of the devices described herein, or other card delivery devices known in the art) as an apparatus for dispensing playing cards having a dispensing end, the dispensing end comprising the following components:
When the shorter card guide is positioned proximate a dealer, cards may be pulled in an X direction (along or parallel to axis A as shown in
Cards may be moved out of the shuffler in a straight line (the traditional delivery method), in an arcuate path, along an irregularly shaped path, in an “L” shaped path or in any other manner that is desirable to the dealer without exposing the down turned card face.
The dispensing end may be integrally formed with a card shuffler, such as a continuous card shuffler, or a card dispenser or “shoe” that delivers pre-shuffled cards to a casino card game such as blackjack or baccarat, for example.
According to aspects of the invention, the first card guide has a terminal end with a curved inner surface, permitting cards to pass without being hung up or stuck on the card guide. This curvature may be cylindrical or may be of another shape, as long as the inner edge is not sharp.
One structure of the present invention includes a base plate with at least one sensor embedded in the base plate. At least one sensor is capable of reading standard rank and suit markings on standard playing cards.
In some embodiments, a card feed limiter plate is positioned between the upper plate and the base plate. The necessity of the card feed limiter depends upon the type of sensor used to read card rank and suit. When close proximity between the card and the sensor is needed, a card feed limiter plate is desirable.
When alternative sensors are used, it is not always necessary to provide a card feed limiter. For example, when a CMOS (complementary-metal oxide semiconductor) sensing array is used, the distance between a sensor and a card face can be greater than when a CIS line sensor is used, eliminating the need for a card feed limiter.
Referring now to
Cards travel generally in a first direction 310. When a trailing edge of a card (not shown) travels past terminal end 312 of the first card guide 302, the card is free to move in a second direction 314, or combinations of directions 310 and 314 in a wide variety of card path shapes. In one embodiment, an offset D between card guides 302, 304 in the first direction 310 is 0.285 inch. However, this dimension is a function of the card dimensions, and it is well understood that cards of varying dimensions are available for sale to casinos.
An inner edge 316 is preferably curved, as is inner edge 318 of the terminal end of the second card guide 304 to prevent cards from hanging up in the slot as they are being removed manually from the dispensing end.
Preferably, all card contacting surfaces defining the slot are smooth and free of sharp edges or burrs to facilitate rapid manual removal of cards.
A method of delivering playing cards from a playing card handling device is disclosed. The method includes the step of providing a playing card delivery area. The delivery area is defined by an upper plate with a finger slot, a base plate, a first card guide and a second spaced apart card guide. The card guides and plates define an output slot through which playing cards can be slidably removed.
The second card guide extends further in a first direction of travel of the card. The method includes placing a card in the playing card delivery area, and the dealer moving a leading edge of the card in a first direction of travel until a trailing end of the card clears a terminal end of the first card guide. The dealer then may move the card in at least a second direction of travel while removing the card.
The second direction of travel may be in any direction other than the first direction of travel, such as in a direction perpendicular to the first direction, in an arc-shaped path, in an irregularly shaped path, in an L-shaped path, etc. Preferably, the second direction of travel is not parallel to the first direction of travel.
Although the card guide nearest the dealer is illustrated in the drawings as being on the left side of the shoe (looking down the long axis from the exit end), the card guide may be positioned on the opposite side, depending upon the position of the shoe on the table.
The shoe illustrated in the drawings is for the game of baccarat, where dealers position the shoe to the left. In other games, the shoe might be positioned to the dealer's right, making it desirable to position the dealer controls and the first shorter card guide on the opposite side of the machine.
Benefits of the present technology may also be described in more functional terms with respect to elements in the structure of the card delivery end of the devices, whether a delivery shoe or a playing card shuffler has a delivery end thereon. When there is a tight fit between the walls of the device where cards are removed by the dealer, a shallow angle of relative rotation between the front and the back causes drag and erratic card removal, and uneven card-reading capability as cards are withdrawn. The present technology increases the angle at which cards can be rotated as they are being withdrawn from the device, while each playing card maintains a two-point contact (one point on each side edge of the playing card) with the walls of the device. Other possible modifications, such as notching one corner of the barrier plate could create a three-point contact that might even increase unwanted drag. The three points of contact can be envisioned as against the two corners of the notch and the far wall of the output slot. Even if there were not the three-point contact, the card could “stutter” as it moves from one corner on a notch to another corner.
Rotation of a playing card, as discussed herein, relates to rotation of the card about its geometric center and can also be seen as the angle of the long central axis of the playing card with respect to the long axis of the exit slot in the device. Cards may be allowed to rotate between 5° and 40° as they remain in two-point contact with the last 20% of the card retained in the card slot. Preferably, the cards may be allowed to rotate between 10° and 40° or between 15° and 35° as they remain in two-point contact with the last 20% of the card retained in the card slot.
The above description and drawings should be considered illustrative of example embodiments that achieve the features and advantages described herein. Modification and substitutions to specific conditions and structures can be made. Accordingly, the invention is not to be considered as being limited by the foregoing description and drawings, but is only limited by the scope of the appended claims.
This application is a divisional application of U.S. patent application Ser. No. 12/501,322 filed Jul. 10, 2009, which, in turn, is a continuation-in-part application from each of U.S. patent application Ser. No. 11/983,463, filed Nov. 9, 2007, now abandoned, and U.S. patent application Ser. No. 11/417,894, filed May 3, 2006, now U.S. Pat. No. 7,593,544, issued Sep. 22, 2009, the contents of which are incorporated by reference herein in their entireties. This application is also related to U.S. patent application Ser. No. 11/152,475, filed Jun. 13, 2005, now U.S. Pat. No. 7,769,232, issued Aug. 3, 2010, U.S. patent application Ser. No. 10/915,914, filed Aug. 10, 2004, now U.S. Pat. No. 7,264,241, issued Sep. 4, 2007, U.S. patent application Ser. No. 10/880,408, filed Jun. 28, 2004, now abandoned, and U.S. patent application Ser. No. 10/622,321, filed Jul. 17, 2003, now U.S. Pat. No. 7,029,009, issued Apr. 18, 2006, the content of each of which is incorporated by reference herein in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 12501322 | Jul 2009 | US |
| Child | 14165155 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 11983463 | Nov 2007 | US |
| Child | 12501322 | US | |
| Parent | 11417894 | May 2006 | US |
| Child | 11983463 | US |
