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. 31, 1978
Filed:
May. 06, 1976
Donald Wayne Crouch, Newtown Square, PA (US);
Robert Wayne Nelson, Broomall, PA (US);
General Electric Company, Philadelphia, PA (US);
Abstract
A guide sleeve for the movable contact rod of a vacuum-type circuit interrupter fits within the usual tubular bellows of the interrupter. The bellows has some of its annular convolutions located axially-inwardly of the axially-inner end of the guide sleeve. A coating of self-lubricating plastic material is provided on the outer peripheral surface of the guide sleeve and on its inner end surface. This coating is sufficiently close to the internal surface of the bellows as to be contacted by said convolutions when the contact rod is axially moved during operation of the interrupter. The lubricating properties of the coating reduce friction between said convolutions and said coated sleeve.