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. 06, 1990
Filed:
Aug. 16, 1988
Applicant:
Inventors:
Donald Parker, Elmhurst, IL (US);
Robert Rollins, Elmhurst, IL (US);
Assignee:
Coin Mechanisms, Inc., Elmhurst, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G07D / ; H01F / ; H01F / ;
U.S. Cl.
CPC ...
194318 ; 29605 ; 242-703 ;
Abstract
A coil used in electronic coin testers for testing a coin for the purpose of accepting a valid coin or rejecting a counterfeit coin in a coin-operated vending machine, game, telephone or the like is disclosed. A coin slot is provided having two opposing longitudinal walls spaced to accommodate a coin therebetween of either the sample coin type or the test coin type. Within each longitudinal wall a planar looped coil is provided that, upon inducement of an electric current, generates lines of magnetic flux which are normal to the opposing surfaces of the longitudinal walls throughout the length of the longitudinal walls.