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:
Mar. 23, 1982
Filed:
Sep. 21, 1979
Applicant:
Inventors:
Milton Sackin, Mt. Lebanon Township, Warren County, PA (US);
David M Edison, Murrysville, PA (US);
Francis T Thompson, Murrysville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ; G06F / ;
U.S. Cl.
CPC ...
364492 ; 361 68 ; 361 79 ; 324 52 ;
Abstract
Protective relay apparatus for electric power systems which logically relates the outputs of two algorithms to provide the fastest possible trip for the conditions of the post-fault voltage and current waveforms.