Control device for game machine
Patent 4679143 Issued on July 7, 1987. Estimated Expiration Date: 
July 7, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 7, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesChangeable display apparatus Slot machine device Amusement apparatus Automatic lottery system Patent #: 4494197 InventorAssigneeApplicationNo. 06/540677 filed on 10/11/1983US Classes:463/25, Credit/debit monitoring or manipulation (e.g., game entry, betting, prize level, etc.)463/21Having means to alter combination probabilityExaminersPrimary: Smith, JerryAssistant: Meyer, Charles B. Attorney, Agent or FirmInternational ClassG07F 17/32 (20060101)Foreign Application Priority Data1982-11-29 JPAbstractAn amusement device and method of operation are disclosed wherein a plurality of payout schedules which govern the conduct of the game are retained in a memory. The actual payout rate of the apparatus is constantly determined and the actual payout is compared with predetermined limits. If the actual payout exceeds the limit, the apparatus automatically selects another payout schedule which alters the probability of a player's winning. The game is fair because the payout schedule governing conduct of the game is displayed to the player. | |
