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:
Jun. 15, 1976
Filed:
Jul. 01, 1974
James J Hinds, La Grange, IL (US);
National Can Corporation, Chicago, IL (US);
Abstract
A system and method for sensing and detecting articles such as container ends and for providing count and/or control outputs representative of the number of such articles detected. A sensing signal is impinged against the article to be sensed and a feedback signal representative thereof is generated. This feedback signal is connected to the input of a circuit which generates a fixed frequency signal for modulating the sensing signal at the fixed frequency. This circuit provides a first output signal in response to the presence at its input of a signal oscillating at the fixed frequency and a second output signal in the absence at its input of a signal oscillating at the fixed frequency. One of these output signals is indicative of the detection of an article and is applied to suitable counting and/or control circuitry which provides the desired count and/or control outputs.