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:
Jun. 09, 1992
Filed:
Nov. 19, 1990
Robert L Thomas, Horseheads, NY (US);
Natraj C Iyer, Columbia, SC (US);
Allan J Bamford, deceased, late of Horseheads, NY (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Copper-chromium contacts and copper-ferrous material shields are used in vacuum circuit interrupters. The copper chromium contacts include a specific copper-iron non-abutting section, and an abutting layer preferably of copper-chromium with a layer thickness that constitutes about 50% of the total thickness of the contact which constitutes the abutting section of the contact structure. The shield for the contacts, are preferably formed of copper-ferrous material and 'X' in which 1%-50% is ferrous material, and 'X'=chromium 0% to 30% and ferrous material plus 'X' is less than 60% of the total shield. The contacts and shields are formed by a powder metallurgical procedure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile