Two way communication token interrogation apparatus
Patent 4926996 Issued on May 22, 1990. Estimated Expiration Date: 
June 22, 2007. 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.
June 22, 2007. 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 ReferencesInventorsApplicationNo. 064877 filed on 06/22/1987US Classes:194/212, Having means to test physical characteristic of check194/205, CONTROL MECHANISM ACTUATED BY CHECK, OTHER THAN COIN (E.G., SLUG, TOKEN, CARD, ETC.), WHICH IS MUTILATED OR RETAINED194/213, Test electrical or magnetic property194/214, CHECK, PER SE194/318, Passing between transmitting and receiving coils235/381, With vending340/5.9, Commodity (e.g., vending)340/10.34Power upExaminersPrimary: Rolla, Joseph J.Assistant: Ammeen, Edward S. Attorney, Agent or FirmForeign Patent References
International ClassG07F 007/10Foreign Application Priority Data1983-12-06 GBAbstractA token handling device transmits, using an electromagnetic carrier, data, clock pulses and power to a token. The token transmits data by varying the degree of absorption of the carrier in synchronism with the clock pulses. These data transmissions are detected by a receiver in the token handling device, the sensitivity of which is adjusted each time a token is received. The token could be used in transactions in place of coins, or alternatively could be used for identification purposes in other areas. Data stored by the token could be used to change the way in which the token handling device operates. The token handling device may for example form a vending machine, and the token could be used to alter the pricing of goods vended thereby. The token handling device may be combined with a coin validator, in which case there is preferably a common path from an entrance slot for carrying both the tokens and the coins to appropriate testing apparatus.Other References
Field of SearchCONTROL MECHANISM ACTUATED BY CHECK, OTHER THAN COIN (E.G., SLUG, TOKEN, CARD, ETC.), WHICH IS MUTILATED OR RETAINEDHaving means to read magnetically encoded check Having means to test physical characteristic of check Test electrical or magnetic property CHECK, PER SE Having electric circuit influenced by check Passing between transmitting and receiving coils Entering coil Credit or identification card systems With vending Permitting access RECORDS | |
