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:
Aug. 31, 1976
Filed:
May. 29, 1975
Lawrence S Schmitz, Pittsburgh, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
In a solid state security system having a plurality of alarm sensors for generating output signals in response to alarm conditions and a corresponding plurality of resettable latching circuits for developing digital output signals indicative of alarm conditions for processing by logic circuits to develop alarm output signals, an automatic test circuit responds to a single activating signal by sequentially supplying simulated alarm condition signals to the respective latching circuits to determine the operational integrity of the latching and logic circuits. At the conclusion of the test sequence the automatic test circuit transmits reset signals to the resettable latching circuits.