Card shuffling apparatus with integral card delivery

• US 20040169332A1
• Filed: 10/15/2003
• Published: 09/02/2004
• Est. Priority Date: 09/28/2001
• Status: Active Grant

• Current Assignee: Sg Gaming, Inc. (Scientific Games Corporation)
• Original Assignee: SHFL Entertainment Incorporated (Scientific Games Corporation)
• Inventors: Swanson, Ronald R., Bourbour, Feraidoon, Grauzer, Attila, Nelson, Troy D., Scheper, Paul K., Stasson, James B.
• Granted Patent: US 7,523,935 B2
• Time in Patent Office: Days
• US Class Current: 273/149R
• CPC Class Codes: A63F 1/12 Card shufflers

Abstract

A card shuffling device includes a top surface, a card receiving area for receiving an initial set of playing cards, a randomizing system for randomizing the initial set of playing cards, a collection surface in a card collection area for receiving randomized playing cards, the collection surface receiving cards positioned so that all cards collected are below the top surface of the device, and an elevator for raising the collection surface so that at least some randomized cards are elevated above the top surface of the device. An automatic card shuffler includes a microprocessor with memory, an infeed compartment for receiving cards to be randomized, a card moving mechanism for moving cards individually from the infeed compartment into a card mixing compartment, a card mixing compartment comprising a plurality of substantially vertical supports, an opening for the passage of cards from the infeed compartment, a moveable lower support surface, at least one stationary gripping arm, a lower edge proximate the opening, the gripping arm capable of suspending cards above the opening, and an elevator for raising and lowering the moveable support surface. A position of the elevator is randomly selected and the support surface is moved to the selected position, and after the gripping arm grasps at least one side of the cards, the elevator lowers, creating a space beneath the gripping arm, wherein a card is moved from the infeed compartment into the space, thereby randomizing the cards. A method of randomizing a group of cards utilizing the apparatus is also disclosed.

Claims

1. A device for forming a random set of playing cards comprising:

a top surface and a bottom surface of said device;

a card receiving area for receiving an initial set of playing cards;

a randomizing system for randomizing the order of an initial set of playing cards;

a collection surface in a card collection area for receiving randomized playing cards, the collection surface receiving cards so that all cards are received below the top surface of the device;

an elevator for raising the collection surface so that at least some randomized cards are elevated at least to the top surface of the device; and

a moveable cover over the elevator.

2. The device of claim 1 wherein the elevator raises all randomized cards above the top surface of the device and the moveable cover is raised to allow the randomized cards to rise above the top surface of the device.

3. The device of claim 2 wherein the moveable cover is raised by an element moving in concert with the elevator or an elevator drive system.

4. The device of claim 1 wherein the card receiving area is sloped to assist movement of playing cards towards the randomizing system.

5. The device of claim 1 wherein at least one pick-off roller removes cards one at a time from the card receiving area and moves cards one at a time towards the randomizing system.

6. The device of claim 5 wherein at least one pair of rollers receives cards from the at least one pick-off roller.

7. The device of claim 6 wherein a microprocessor controls movement of the pick-off roller and the at least one pair of rollers.

8. The device of claim 6 wherein when a first card being moved by the pick-off roller is being moved by the at least one pair of rollers, movement of the pick-off roller is altered so that no card other than the first card is moved by either the pick-off roller or the at least one pair of rollers.

9. The device of claim 8 wherein tension on the first card effected by the at least one pair of rollers causes the pick-off roller to freely rotate and to not propel the first card.

10. The device of claim 7 wherein the microprocessor is programmed to direct the pick-off roller to cease propelling a first card being moved by the pick-off roller when it is sensed that the first card is being moved by the at least one pair of rollers.

11. The device of claim 1 wherein the randomization system moves one card at a time into an area overlying the collection surface.

12. The device of claim 1 wherein one card at a time is positioned into a randomized set of playing cards over the collection surface.

13. The device of claim 12 wherein the collection area is bordered on two opposed sides by two movable card gripping elements.

14. The device of claim 13 wherein an insertion point to the card collection area is located below a bottom edge of the two movable card gripping elements.

15. The device of claim 13 wherein the card collection surface is vertically positionable within the card collection area.

16. The device of claim 15 wherein the card collection surface is moved by a motivator that is able to move incremental vertical distances that are less than the thickness of a playing card.

17. The device of claim 15 wherein the card collection surface is moved by a motivator that is able to move incremental vertical distances that are less than one-half the thickness of a playing card.

18. The device of claim 17 wherein the motor is a stepper motor.

19. The device of claim 17 wherein the motor is an analog motor.

20. The device of claim 1 wherein a sensor is present within the collection area, below the top surface of the device, the sensor detecting a position of a designated card or position of a separation between cards.

21. The device of claim 20 wherein a microprocessor is present in the device and the microprocessor controls vertical movement of the card collection surface.

22. The device of claim 21 wherein the sensor identifies the position of the card collection surface so as to place the top card at a position that is level with or above the bottom of at least one card gripping element that is movable from at least one side of the collection area towards playing cards within the card collection area.

23. The device of claim 22 wherein the microprocessor is programmed to determine a distance that the card collection surface must be vertically moved to position at least one specific card at a bottom edge of the at least one card gripping element when the card gripping element moves to contact cards within the card collection area.

24. The device of claim 23 wherein the at least one card gripping element comprises at least two gripping elements, at least one of which moves from a side of the collection area towards playing cards within the card collection area.

25. The device of claim 23 wherein the microprocessor is programmed to lower the card collection surface within the card collection area after the at least one card gripping element has contacted and supported cards within the card collection area, creating two segments of cards, and a gap in between the segments.

26. The device of claim 25 wherein the microprocessor directs movement of an individual card into the gap, between the two segments of cards.

27. The device of claim 24 wherein the microprocessor is programmed to lower the card collection surface within the card collection area after the two elements have contacted and supported cards within the card collection area, creating two segments of cards and a gap between the segments.

28. The device of claim 27 wherein the microprocessor directs movement of an individual card into the gap, between the two segments of cards.

29. The device of claim 1 wherein a microprocessor is controllably connected to the device, the microprocessor directing movement of playing card moving elements within the device, the microprocessor randomly assigning potential positions for each card within the initial set of playing cards, and then directing the device to arrange the initial set of playing cards into those randomly assigned potential positions to form a randomized final set of playing cards.

30. A device for forming a random set of playing cards comprising:

a top surface and a bottom surface of said device;

a receiving area for an initial set of playing cards;

a randomizing system for randomizing initial set of playing cards;

a collection surface in a card collection area for receiving randomized playing cards;

an elevator for raising the collection surface within the card collection area;

at least one card supporting element within the card collection area that will support a predetermined number of cards within the card collection area; and

a moveable cover over said card collection area.

31. The device of claim 30 wherein the cover comprises a single element that can pivot to display both the receiving area and the card collection area.

32. The device of claim 30 wherein the cover comprises two individual elements that each can pivot to separately display the receiving area and the card collection area.

33. The device of claim 32 wherein an at least one card supporting element comprises an element on at least one side of the card collection area that can move inwardly within the card collection area to contact and support the predetermined number of cards within the card collection area.

34. The device of claim 33 wherein the at least one card supporting element comprises at least two opposed card supporting elements that move inwardly within the card collection area to contact and support the predetermined number of cards within the card collection area.

35. The device of claim 30 wherein a microprocessor is communicatively connected to the device and the microprocessor is programmed to determine a distance that the card collection surface must be vertically moved to position at least one specific card position other than the top card at a bottom edge of the at least one card supporting element when the card supporting element moves to contact cards within the card collection area.

36. The device of claim 31 wherein a microprocessor communicatively connected to the device is programmed to lower the card collection surface within the card collection area after the at least one card supporting element has contacted and supported cards within the card collection area, creating two segments of cards and a gap between the segments.

37. The device of claim 36 wherein the microprocessor directs movement of an individual card into the gap between the two segments of cards.

38. The device of claim 32 wherein a microprocessor is communicatively connected to the device and the microprocessor is programmed to determine a distance that the card collection surface must be vertically moved to position at least one specific card at a bottom edge of the at least one card supporting element when the card supporting element moves to contact cards within the card collection area.

39. The device of claim 38 wherein a microprocessor communicatively connected to the device is programmed to lower the card collection surface within the card collection area after the at least one card supporting element has contacted and supported cards within the card collection area, creating two segments of cards.

40. An automatic card shuffling device comprising:

a microprocessor with memory for controlling the operation of the device;

an infeed compartment for receiving cards to be randomized;

a card moving mechanism for moving cards individually from the infeed compartment into a card mixing compartment;

a card mixing compartment comprising a plurality of substantially vertical supports, an opening for the passage of cards from the infeed compartment, a moveable lower support surface;

at least one stationary gripping element, a lower edge proximate the opening, the gripping arm capable of suspending cards above the opening;

an elevator for raising and lowering the moveable support surface;

wherein a position of the elevator is randomly selected and the support surface is moved to the selected position, and after the gripping element grasps at least one side of the cards, the elevator lowers, creating a space beneath the gripping element, wherein a card is moved from the infeed compartment through the opening and into the space, thereby randomizing the cards.

41. The automatic card shuffling device of claim 40, wherein when each card in the infeed compartment has been fed into a space created by the gripping element and random positioning of the lower support surface, wherein the stack of cards in the card mixing area is randomized.

42. The device of claim 40, wherein the elevator is moveable to raise the stack of shuffled cards after all cards in the infeed compartment are fed.

43. The device of claim 40 and further comprising a moveable cover over said card mixing compartment.

44. The device of claim 40 wherein two stationary gripping elements are provided to grip opposite sides of a stack of cards.

45. The device of claim 44, wherein the opening in the card mixing compartment is a horizontal slot, and wherein the infeed compartment comprises a lower surface, wherein the card moving mechanism comprises a pick off roller for moving a lowermost card in the infeed compartment toward the slot in the card mixing compartment.

46. The device of claim 44, and further comprising a card delivery key, wherein the card delivery tray is positioned on an upper surface of the device.

47. The device of claim 46 wherein a lower surface of the infeed tray and lower surface of the card deliver tray are positioned at an elevation proximate an elevation of a gaming table surface.

48. A method of randomizing a group of cards, comprising the steps of:

placing a group of cards to be randomized into a card infeed tray;

removing cards individually from the card infeed tray and delivering the cards into a card collection area, the card collection area having a moveable lower surface, and a stationary opening for receiving cards from the infeed tray;

elevating the moveable lower surface to a randomly determined height;

grasping at least one edge of a group of cards in the card collection area at a point just above the stationary opening;

lowering the moveable lower surface to create an opening in a stack of cards formed on the lower surface, the opening located just beneath a lowermost point where the cards are grasped;

inserting a card removed from the infeed tray into the opening; and

after randomizing all cards, elevating a collection of randomized cards and raising a covering lid over the collection of randomized cards.

49. The method of claim 48 wherein after a card has been inserted, and when a presence of at least one additional card in the card infeed tray is sensed, the elevator moves to another randomly determined height, creating another opening.

50. An automatic card shuffler, having an upper surface and a lower surface, comprising;

a card infeed tray mounted to the upper surface of the card shuffler;

;

a shuffled card delivery tray mounted on an elevator; and

at least one moveable cover over at least one of the card infeed tray and the shuffled card delivery tray, wherein the card infeed tray is located proximate an elevation of a gaming table surface and the shuffled card delivery tray can be elevated proximate an elevation of the gaming table surface.

51. The device of claim 50 wherein at least a portion of the shuffler is concealed beneath the gaming table surface.

52. The device of claim 50 wherein the shuffler is mounted onto a table by at least one support bracket.

53. The device of claim 50 wherein the card shuffler is built or inserted into a gaming table, and is at least partially surrounded by gaming table surface.

54. The device of claim 51 wherein elevation of the shuffled card delivery tray is effected by a stepper motor.

55. A method of arranging a group of cards into a desired order in a computer controlled automatic card shuffler, the card shuffler comprising an infeed tray, a feed mechanism, a card arranging area, a retaining device for suspending cards in the card arranging area, a lower support surface in the card arranging area and an elevator for raising and lowering the lower support surface, the method comprising:

a) assigning each card in the infeed tray a final order;

b) feeding each card individually into the card arranging area, wherein the lower support surface is lowered beneath an elevation of the card feed mechanism when the computer instructs that the card being fed is to be placed on top of the stack,

c) suspending all cards in the card arranging area by means of the retaining device when the computer instructs that the card being fed is to be placed on the bottom of the stack, and

d) instructing the elevator to move, causing the lower support surface to adjust to a preselected elevation, retaining a subgroup of cards above a feed elevation and lowering the lower surface, creating an opening, and placing a card between the subgroup of suspended cards and the remaining cards supported by the lower support surface wherein steps b), c) and d) are performed while a moveable cover is closed over at least one of the infeed tray and the stack.

56. The method of claim 55, wherein the final order is random.

57. The method of claim 55, wherein the final order is predetermined.

58. The method of claim 55 and further comprising the step of reading a suit and rank of each card prior to feeding the cards into the card arranging area.

59. The method of claim 57, wherein the final order is an original playing card pack order.

60. An automatic card shuffler comprising:

a housing capable of being mounted into a gaming table surface;

a card receiver for accepting a group of cards to be shuffled;

a randomizing system for randomizing the order of an initial set of playing cards;

a collection surface for receiving randomized cards;

an elevator for raising the collection surface to an elevation proximate the gaming table surface; and

a microprocessor for controlling the operation of the card shuffler.

61. The automatic card shuffler of claim 60, and further comprising a movable cover that is closed at least part of the time over at least one of the card receiver and collection surface.

62. An automatic card shuffler, comprising:

a housing;

a card receiver for receiving a group of cards to be shuffled;

a card randomizing area, the area including a gripping support mechanism for suspending at least one card within the card randomizing area; and

a mechanism for automatically adjusting the gripping support mechanism during operation to suspend cards of varying dimensions.

63. The device of claim 62, wherein the gripping support mechanism comprises a pair of spaced apart gripping pads that move towards the edges of a stack of cards.

64. The device of claim 62 further comprising a sensor for sensing the presence of a substack of suspended cards.

65. An automatic card shuffler, comprising:

a card randomization mechanism;

a processor for determining operational functions of the card randomization mechanism and issuing commands;

at least one encoder for verifying operational functions of the card randomization mechanism, wherein

the processor verifies that cards have been randomized by comparing commands to encoder information to verify the operation of the card randomization mechanism.

66. The device of claim 65, wherein the card shuffler is mounted into a gaming table and the card randomization mechanism is concealed from a player'"'"'s view during randomization.

67. An automatic card shuffler, comprising:

a microprocessor;

a card randomization mechanism; and

a remote controller for controlling the card randomization mechanism by means of a user-manipulated remote control device.

68. The device of claim 67 wherein the remote controller is selected from the group consisting of an infra-red (I.R.) controller and a foot pedal.