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:
Dec. 15, 1987
Filed:
May. 07, 1986
Applicant:
Inventors:
William R Wolfe, Mt. Lebanon, PA (US);
David Marschik, Wilkins Township, Allegheny County, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
336 92 ; 336107 ; 336142 ; 336175 ; 336192 ; 361 38 ; 361392 ;
Abstract
A face connected instrument transformer is disclosed having a plurality of transformation ratios comprised of two primary windings and a single secondary winding. Each primary winding is electrically connected to a pair of terminals disposed adjacent to opposite faces of the transformer housing for engaging contacts within a molded case circuit breaker housing. The transformation ratio of the instrument transformer is changed by removing the instrument transformer from the circuit breaker housing and inserting the opposite face.