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:
May. 11, 1982
Filed:
Jun. 12, 1980
Lawrence J Ryczek, Greendale, WI (US);
Donald L Van Zeeland, Greenfield, WI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A circuit for a switch which receives an input from a sensor head (18) such as a proximity sensor, limit switch, or other type of condition-responsive sensor. In its most complex form the circuit includes a power supply/regulator (24), an output load current source (12), an output load current sink (14), input logic (16) to receive the signal from the sensing head, a selector (10) to determine whether the source and sink will be normally open or normally closed, and a device (26) for checking the outputs for faults and indicating the presence of such. Other circuits include certain combinations of these parts or variations of these parts.