Playing card shuffling machine

• US 6,299,167 B1
• Filed: 02/26/1999
• Issued: 10/09/2001
• Est. Priority Date: 04/18/1994
• Status: Expired due to Term

• Current Assignee: Sg Gaming, Inc. (Scientific Games Corporation)
• Original Assignee: VendingData Corporation (Melco International Development Limited)
• Inventors: Sines, Randy D., Forte, Steven L., Hale, Leonard A.
• Primary Examiner(s): Layno, Benjamin H.
• Application Number:
  US09/258,835
• Time in Patent Office: 956 Days
• Field of Search: 273/149.R
• US Class Current: 273/149.00R
• CPC Class Codes: A63F 1/12 Card shufflers

Abstract

A playing card shuffler for shuffling a stack of playing cards with random distribution. The playing card shuffler includes an infeed playing card stack holder supporting an unshuffled playing card stack and discharges playing cards from incremental positions of the unshuffled playing card stack directly to the shuffled card receiver.

Claims

1. A method for automating shuffling of playing cards, comprising the steps of:

a) forming an unshuffled stack of playing cards which are to be shuffled, said playing cards being in stacked array formation with contact between adjacent cards of the unshuffled array;

b) holding the unshuffled stack in an unshuffled stack holder on a floor having a fixed height; and

d) using an ejector mounted on an ejector carriage which is movable relative to a frame to eject at least one playing card at an incremental position of the unshuffled stack directly to a shuffled card receiver to provide a randomly distributed array of shuffled cards.

2. The method of shuffling an array of playing cards according to claim 1, comprising the additional step of collecting the distributed array of shuffled cards in a shuffled card stack.

3. The method of shuffling an array of playing cards according to claim 1, wherein the unshuffled playing cards are discharged one at a time from the unshuffled stack of playing cards.

4. The method of shuffling an array of playing cards according to claim 1, wherein the unshuffled playing cards are discharged in packets of predetermined quantities from the unshuffled array of playing cards.

5. The method of shuffling an array of playing cards according to claim 4, wherein the unshuffled playing cards are discharged in packets of about 12 cards from the unshuffled stack of playing cards.

6. The method of shuffling an array of playing cards according to claim 1, further comprising the step of resisting discharge of playing cards by providing counteractive force opposing discharge of playing cards from the unshuffled stack of playing cards.

7. The method of shuffling an array of playing cards according to claim 1, further comprising the step of resisting discharge of playing cards by engaging the cards with at least one resilient member.

8. The method of shuffling an array of playing cards according to claim 1, further comprising the step of straightening playing cards held in the unshuffled stack array.

9. The method of shuffling an array of playing cards according to claim 1, further comprising the step of detecting the approximate number of cards held in the unshuffled card stack.

10. A method for automated shuffling of playing cards, comprising the steps of:

a) forming an unshuffled stack of playing cards which are to be shuffled, said playing cards being stacked in array formation with contact between adjacent cards;

b) holding the unshuffled stack in an unshuffled stack holder on a floor having a fixed height; and

c) using an ejector mounted on an ejector carriage which, is movable relative to a frame, to discharge at least one playing card at a time at a card discharge position of the unshuffled stack directly to a shuffled card receiver for random distribution of the at least one playing card among other playing cards to be received in the shuffled card receiver.

11. The method of shuffling an array of playing cards according to claim 10, comprising the additional step of forming a shuffled card stack from the cards received in the shuffled card receiver.

12. The method of shuffling an array of playing cards according to claim 11, wherein the unshuffled playing cards are discharged one at a time from the unshuffled stack of playing cards.

13. The method of shuffling an array of playing cards according to claim 11, wherein the unshuffled playing cards are discharged in packets of predetermined quantities from the unshuffled array of playing cards.

14. The method of shuffling an array of playing cards according to claim 13, further comprising the step of resisting discharge of playing cards by engaging the cards with at least one resilient member.

15. The method of shuffling an array of playing cards according to claim 13, further comprising the step of straightening playing cards held in the unshuffled stack array.

16. The method of shuffling an array of playing cards according to claim 13, further comprising the step of detecting the approximate number of cards held in the unshuffled card stack.

17. The method of shuffling an array of playing cards according to claim 10, wherein the unshuffled playing cards are discharged in packets of about 12 cards from the unshuffled stack of playing cards.

18. An automated playing card shuffler, comprising:

a) a shuffled stack receiver;

b) a playing card discharger comprising an ejector mounted on an ejector carriage which is movable relative to a frame for discharging playing cards laterally from incremental positions of the unshuffled card stack directly to the shuffled card receiver.

19. The automated playing card shuffler of claim 18, further comprising at least one removal resistor which provides counteractive force opposing displacement of playing cards.

20. The automated playing card shuffler of claim 18, further comprising at least one controllable activated removal resistor which provides controlled intermittent counteractive force opposing displacement of playing cards.

21. The automated playing card shuffler of claim 18, further comprising at least one removal resistor which provides counteractive force opposing displacement of playing cards;

said at least one removal resistor including resilient members which engage cards displaced from the unshuffled stack.

22. A method for creating a random deck of shuffled cards, the method comprising the steps of:

a) supporting an array of unshuffled cards on an unshuffled card surface; and

b) removing cards from the array of unshuffled cards using an ejector mounted on an ejector carriage which is movable relative to a frame and adjacent the array of unshuffled cards to elect at least one card therefrom, thereby moving cards from the unshuffled array to a shuffled array of cards, the shuffled array of cards having a random array, the shuffled array of cards being supported on a shuffled card surface directly adjacent the unshuffled card surface.

23. The method for reading a random deck of shuffled cards according to claim 22, wherein the cards are playing cards.