Methods of randomizing cards

• US 9,266,012 B2
• Filed: 12/05/2014
• Issued: 02/23/2016
• Est. Priority Date: 04/15/1998
• Status: Expired due to Fees

• Current Assignee: Sg Gaming, Inc. (Scientific Games Corporation)
• Original Assignee: Bally Gaming Incorporated (Scientific Games Corporation)
• Inventors: Grauzer, Attila, Bourbour, Feraidoon, Nelson, Troy D., Rynda, Robert J., Scheper, Paul K., Stasson, James B., Swanson, Ronald R.
• Primary Examiner(s): Layno, Benjamin
• Application Number:
  US14/562,482
• Publication Number:
  US 20150145205A1
• Time in Patent Office: 445 Days
• Field of Search: 273/149.R, 273/149.P
• US Class Current: 1/1
• CPC Class Codes: A63F 1/12 Card shufflers
• CPC Class Codes: A63F 1/14 Card dealers

Abstract

Apparatuses and methods for moving playing cards from a first group of cards into plural hands of cards, wherein each of the hands contains a random arrangement of cards. The apparatus may comprise a card receiver for receiving the first group of cards, a single stack of card-receiving compartments generally adjacent to the card receiver, the stack generally vertically movable, an elevator for moving the stack, a card-moving mechanism between the card receiver and the stack, and a microprocessor that controls the card-moving mechanism and the elevator so that an individual card is moved into an identified compartment. The number of compartments receiving cards and the number of cards moved to each compartment may be selected. Apparatuses for feeding cards may comprise a surface for supporting a stack of cards, a feed roller with a frictional outer surface, a drive mechanism for causing rotation of the feed roller, a pair of speed-up rollers to advance the cards out of the feed roller, and a clutch mechanism for disengaging the feed roller from the drive mechanism as the card comes into contact with the speed-up rollers.

Claims

1. A card shuffling apparatus configured to shuffle a stack of playing cards, the apparatus comprising:

a card receiver configured to receive a stack of playing cards therein;

card storage compartments;

an input card moving mechanism configured to sequentially move playing cards from a stack of playing cards in the card receiver into at least some of the card storage compartments, the input card moving mechanism including;

at least one pick-off roller located and configured to rotate at a first speed and commence movement of a playing card from the stack of playing cards toward one of the card storage compartments; and

at least one speed-up roller located and configured to rotate at a second, greater speed and drive the playing card responsive to the rotation of the at least one pick-off roller into the card storage compartment;

a card output tray;

an output mechanism configured to transfer the playing cards from the at least some of the card storage compartments to the card output tray; and

a control unit configured to control movement of the input card moving mechanism and the output mechanism, the control unit configured under control of a computer program to randomly assign each playing card in the stack of playing cards in the card receiver to one of the at least some card storage compartments, to individually move each playing card to its assigned card storage compartment until all cards in the stack of playing cards in the card receiver have been moved into the at least some card storage compartments, and to then transfer the playing cards from the at least some card storage compartments to the card output tray.

2. The apparatus of claim 1, wherein rotation of the at least one speed-up roller is driven continuously as the input card moving mechanism sequentially moves playing cards from the stack of playing cards in the card receiver into the at least some card storage compartments.

3. The apparatus of claim 2, wherein rotation of the at least one pick-off roller is driven intermittently as the input card moving mechanism sequentially moves playing cards from the stack of playing cards in the card receiver into the at least some card storage compartments.

4. The apparatus of claim 3, wherein the at least one pick-off roller rotates freely responsive to acceleration of a playing card contacting the at least one pick-off roller caused by contact of the playing card with the at least one speed-up roller.

5. The apparatus of claim 4, wherein the pick-off roller comprises at least one of a dynamic clutch, a slip clutch, and release gearing configured to allow the at least one pick-off roller to rotate freely responsive to acceleration of a playing card contacting the at least one pick-off roller caused by contact of the playing card with the at least one speed-up roller.

6. The apparatus of claim 1, wherein rotation of the at least one pick-off roller is driven intermittently as the input card moving mechanism sequentially moves playing cards from the stack of playing cards in the card receiver into the at least some card storage compartments.

7. The apparatus of claim 1, wherein the at least one pick-off roller rotates freely responsive to acceleration of a playing card contacting the at least one pick-off roller caused by contact of the playing card with the at least one speed-up roller.

8. The apparatus of claim 1, further comprising a clutch mechanism allowing the at least one pick-off roller to freely rotate along a surface of a playing card being driven into one of the card storage compartments by the at least one speed-up roller.

9. The apparatus of claim 8, wherein the clutch mechanism comprises a speed release clutch.

10. A card shuffling apparatus configured to shuffle a stack of playing cards, the apparatus comprising:

a card receiver configured to receive a stack of playing cards therein;

a plurality of card storage compartments; and

an input card moving mechanism configured to sequentially move playing cards from a stack of playing cards in the card receiver into at least some card storage compartments of the plurality, the input card moving mechanism including;

at least one pick-off roller located and configured to commence movement of playing cards from a stack of playing cards in the card receiver toward the plurality of card storage compartments;

a pick-off motor configured to drive rotation of the at least one pick-off roller at a first rate;

at least one speed-up roller located and configured to drive playing cards moving responsive to rotation of the at least one pick-off roller into the at least some card storage compartments of the plurality; and

a speed-up motor configured to drive rotation of the at least one speed-up roller at a second, greater rate.

11. The apparatus of claim 10, further comprising an output mechanism configured to transfer the playing cards from the at least some card storage compartments of the plurality to a card output tray.

12. The apparatus of claim 10, further comprising a control unit configured to control movement of the input card moving mechanism, the control unit configured under control of a computer program to randomly assign each playing card in a stack of playing cards in the card receiver to one of the at least some card storage compartments of the plurality, and to individually move each playing card to its assigned card storage compartment of the plurality until all cards in the stack of playing cards in the card receiver have been moved into the at least some card storage compartments of the plurality.

13. The apparatus of claim 10, wherein rotation of the at least one speed-up roller is driven continuously as the input card moving mechanism sequentially moves playing cards from a stack of playing cards in the card receiver into the at least some card storage compartments of the plurality.

14. The apparatus of claim 13, wherein rotation of the at least one pick-off roller is driven intermittently as the input card moving mechanism sequentially moves playing cards from a stack of playing cards in the card receiver into the at least some card storage compartments of the plurality.

15. The apparatus of claim 14, wherein the at least one pick-off roller rotates freely responsive to acceleration of a playing card contacting the at least one pick-off roller caused by contact of the playing card with the at least one speed-up roller.

16. The apparatus of claim 15, wherein the pick-off roller comprises at least one of a dynamic clutch, a slip clutch, and release gearing configured to allow the at least one pick-off roller to rotate freely responsive to acceleration of a playing card contacting the at least one pick-off roller caused by contact of the playing card with the at least one speed-up roller.

17. The apparatus of claim 10, wherein rotation of the at least one pick-off roller is driven intermittently as the input card moving mechanism sequentially moves playing cards from a stack of playing cards in the card receiver into the at least some card storage compartments of the plurality.

18. The apparatus of claim 10, wherein the at least one pick-off roller rotates freely responsive to acceleration of a playing card contacting the at least one pick-off roller caused by contact of the playing card with the at least one speed-up roller.

19. The apparatus of claim 10, further comprising a clutch mechanism allowing the at least one pick-off roller to freely rotate along a surface of a playing card being driven into a card storage compartment of the plurality by the at least one speed-up roller.

20. A card shuffling apparatus configured to shuffle a stack of playing cards, comprising:

a card receiver configured to receive a stack of playing cards therein;

a pair of speed-up rollers for advancing cards individually within the card shuffling apparatus at a first rate;

a feed roller with a frictional outer surface, mounted to a rotational shaft and positioned to feed cards individually from the stack of playing cards into the pair of speed-up rollers at a second, slower rate;

a drive mechanism to rotate the feed roller;

a clutch mounted to the shaft for disengaging the feed roller from the drive mechanism as an individual card contacts the pair of speed-up rollers.

21. The card shuffling apparatus of claim 20, wherein the card receiver includes a declining surface and a slidable wedge member for sliding engagement with the declining surface and for retaining the stack of playing cards against the feed roller.

22. The card shuffling apparatus of claim 20, wherein the clutch is a dynamic clutch mechanism.

23. The card shuffling apparatus of claim 20, wherein one of the speed-up rollers is driven by a drive mechanism.

24. The card shuffling apparatus of claim 20, wherein one of the speed-up rollers is an idler roller.

25. The card shuffling apparatus of claim 20, wherein the drive mechanism comprises a motor that can be disengaged from the feed roller by operation of the clutch.