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:
Oct. 13, 1981
Filed:
Oct. 23, 1979
Applicant:
Inventors:
George N Kovatch, Monroeville, PA (US);
James B Wallace, Beaver, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
307 64 ; 200 / ; 307 80 ;
Abstract
An electric control system with mechanical interlock characterized by means for switching between normal and emergency supply lines extending to a load which comprise two parallel paths extending to the load which paths include spaced controlled devices, and mechanical interlock means between the several control devices for preventing closing of two or more control devices at the same time.