The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 1981
Filed:
Feb. 12, 1979
Applicant:
Inventor:
Donald E Hooker, Wilmette, IL (US);
Assignee:
Bally Manufacturing Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G07F / ;
U.S. Cl.
CPC ...
1941 / ;
Abstract
A coin acceptor apparatus has circuitry for energizing a first coil so as to induce a signal in a second coil while a coin to be tested is passed between the coils. Circuitry is further provided for cancelling the signal induced in the second coil when a genuine coin passes between the coils, so that the resultant signal is reduced below a predetermined level. Also, the apparatus accepts the coin when the resultant signal is below the predetermined level, and rejects it when the signal is above the predetermined level.