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:
Sep. 07, 1993
Filed:
Aug. 22, 1990
Leonard Noonan, Stanhope, NJ (US);
William R Vogt, Rockaway, NJ (US);
Baker Industries, Inc., Parsippany, NJ (US);
Abstract
A relay supervision system is disclosed to check the presence and operability both of a relay and the associated circuitry located at a position remote from the control unit which effects the supervision. The supervision is accomplished by pulsing the relay with energy at a volt-time integral less than that required to energize the relay and displace a contact set, but sufficient to cause current flow through the winding and its associated circuit components. If the relay includes two separate windings, each winding can be separately pulsed at different times, the relay state determined, and both windings effectively supervised without changing the position of the contact sets operated by the windings. Energy is saved by terminating current flow through the just-energized relay winding as soon as the relay contact set is driven to its desired position