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:
Sep. 05, 1978
Filed:
Jan. 05, 1977
Hugh A Nelson, Plum Borough, PA (US);
Raymond H Schweinebraten, Upper St. Clair, PA (US);
Nicholas A Salemi, Plum Borough, PA (US);
James O Rexroad, Beaver, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A drawout switchgear characterized by a circuit interrupter unit movable into and out of a cell between disconnected and connected positions of stationary primary terminal means supported in the cell and on said unit, retractable second contact means engageable at an intermediate position between the disconnected and connected positions, and a levering-in mechanism for moving said unit between disconnected, intermediate, and connected positions of said terminal and contact means, the levering-in mechanism comprising a cam having a slot of two segments one of which has a higher mechanical advantage and the other for moving the unit into the connected position.