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:
Jan. 11, 1977
Filed:
Apr. 02, 1975
Applicant:
Inventors:
Edmund W Kuhn, Pittsburgh, PA (US);
William P Matty, Jr, Bethel Park, PA (US);
Alan G McGuffie, Pittsburgh, PA (US);
Assignee:
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200 / ; 317103 ;
Abstract
A circuit interrupter including a drawout unit mounted within a sealable enclosure and operable between engaged and disengaged positions. A removable conductive safety barrier at ground potential is mounted on the front of the drawout unit and prevents any human contact with components at high potential. An interlock prevents removal of the safety barrier unless the drawout unit is in the fully levered out position. A hinged plate is operated by replacement of the safety barrier to allow the drawout unit to be operated to the engaged position.