Automatic card shuffler with dynamic de-doubler

• US 7,644,923 B1
• Filed: 07/12/2006
• Issued: 01/12/2010
• Est. Priority Date: 08/23/2002
• Status: Expired due to Fees

• Current Assignee: Sg Gaming, Inc. (Light & Wonder Incorporated)
• Original Assignee: SHFL Entertainment Incorporated (Light & Wonder Incorporated)
• Inventors: Dickinson, Kenneth R., Hessing, Lynn
• Primary Examiner(s): Pierce; William M
• Application Number:
  US11/457,119
• Time in Patent Office: 1,280 Days
• Field of Search: 273/149.R, 273/292
• US Class Current: 273/149.00R
• CPC Class Codes: A63F 1/10 Card holders
• CPC Class Codes: A63F 1/12 Card shufflers
• CPC Class Codes: A63F 1/14 Card dealers

Abstract

An automatic card shuffler includes a card input unit, card ejection unit, card separation and delivery unit and card collection unit. A card ejection unit ejects cards in a singular fashion from a stack of cards placed into the input unit. The ejected cards are passed through a dynamic de-doubler that prevents more than a pre-established number of cards from passing through. The dynamic de-doubler is able to shift positions to accommodate card that are bent, impacted by environmental conditions and otherwise worn. The cards are ejected to a stop arm maintaining the entrance to the card separation unit. Upon processor command, the stop arm raises to allow a plurality of cards to pass under to the card separation and delivery unit. A series of rotating belts and rollers act to separate the cards and propel them individually to the collection unit. A floating gate slightly forward of the stop arm dictates that a minimum number of cards are managed simultaneously. The shuffler is controlled by a processing unit in communication with multiple internal sensors.

Claims

1. An apparatus for randomly arranging a plurality of playing cards comprising:

a support housing;

a random card ejection unit mounted adjacent a first portion of the support housing to receive a stack of one or more playing cards and configured for randomly ejecting cards from the stack of one or more playing cards in the direction of a second portion of the support housing; and

a dynamic de-doubler device mounted in the support housing adjacent the random card ejection unit and including one or more card guides positioned to direct ejected cards to the second portion of the support housing, each guide comprising an opening for receiving ejected cards, an exit adjacent the second portion of the support housing, and one or more protrusions operable to prevent more than a pre-established number of cards from exiting to the second portion of the support housing at one time,

wherein the dynamic de-doubler device is mounted for movement and operable to adjust position within the support housing in response to the one or more protrusions being struck by playing cards randomly ejected from the random card ejection unit.

2. The apparatus of claim 1 wherein the de-doubler device is mounted within the support housing by an assembly comprising one or more springs.

3. The apparatus of claim 1 wherein the de-doubler sits on a pair of parallel, elongated ratchet mechanisms having grooves corresponding to striations on a portion of the de-doubler contacting the parallel, elongated ratchet mechanisms.

4. The apparatus of claim 3 further comprising a floating wheel.

5. The apparatus of claim 3 further comprising a fixed bracket having a pair of guide pins and centering springs assemblies operable to maintain the alignment of the de-doubler.

6. The apparatus of claim 1 further comprising one or more magnets for maintaining a position of the de-doubler.

7. The apparatus of claim 1 wherein at least two protrusions are oppositely positioned to decrease the size of the exit.

8. The apparatus of claim 1 wherein the pre-established number of cards is one.

9. An apparatus for randomly arranging a plurality of playing cards comprising:

a support housing;

a random card ejection unit mounted adjacent a first portion of the support housing to receive a stack of one or more playing cards and configured for randomly ejecting cards from the stack of one or more playing cards in the direction of a second portion of the support housing;

a dynamic de-doubler device mounted in the support housing adjacent to the random card ejection unit being operable to prevent more than a pre-established number of cards from being directed to the second portion of the support housing at one time, said de-doubler device comprising a pair of cross-bars defining a space for facilitating passage of playing cards to the second portion of the support housing upon being ejected from the random card ejection unit; and

one or more springs operable to dynamically permit a position of the de-doubler device to change in response to said de-doubler device being struck by playing cards ejected from the random card ejection unit, wherein the one or more springs are connected at a first end to a rigid member of the support housing and at a second end to the de-doubler.

10. An apparatus for randomly arranging a plurality of playing cards comprising:

a support housing;

a random card ejection unit mounted adjacent a first portion of the support housing to receive a stack of one or more playing cards and configured for randomly ejecting cards from the stack of one or more playing cards in the direction of a second portion of the support housing;

a dynamic de-doubler device mounted in the support housing adjacent the random card ejection unit to be operable to prevent more than a pre-established number of cards from being received in the second portion of the support housing at one time, said de-doubler device comprising a pair of cross-bars defining a space for facilitating passage of playing cards to the second portion of the support housing upon being ejected by the random card ejection unit; and

a pair of parallel, elongated ratchet mechanisms, having grooves, on which the de-doubler sits and moves along in response to said de-doubler device being struck by playing cards ejected from the card input unit.

11. The apparatus of claim 10 further comprising elongated, striated notches which sit on said parallel, elongated ratchet mechanisms, said striated notches and grooves collectively maintaining a position of the de-doubler.

12. The apparatus of claim 10 further comprising a floating wheel.

13. The apparatus of claim 10 further comprising a fixed bracket having a pair of guide pins and centering spring assemblies which fit into openings in the de-doubler.

14. The apparatus of claim 10 further comprising one or more magnets for maintaining a position of the de-doubler.

15. The apparatus of claim 10 further comprising a card guide.