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:
Oct. 07, 1997
Filed:
Nov. 21, 1995
Steven Michael Costello, St. Claire County, IL (US);
Joe Lee Young, St. Louis County, MO (US);
Coin Acceptors, Inc., St. Louis, MO (US);
Abstract
A coin detection device includes one or more optical sensors positioned along a coin path and capable of detecting movement of a coin thereby, a coil energizable to generate an electromagnetic field in the region of the coin path, a processor connected to the optical sensor or sensors so as to receive signals therefrom and connected to a detector which is capable of detecting the coin as it enters and leaves the region of the coil, the processor is operable to establish an optical size time based upon signals received from the optical sensor or sensors and a magnetic size time based upon signals received from the detector and to further establish a ratio of the magnetic size time to the optical size time, or magnetic to optical size ratio, the established ratio is then evaluated to determine if the tested coin is a valid coin.