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:
Apr. 03, 1984
Filed:
Jan. 19, 1981
Applicant:
Inventors:
William J Lange, Murrysville, PA (US);
Robert B Gosser, Irwin, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ;
Abstract
A vacuum circuit interrupter is taught which utilizes the vapor deposition shields thereof and the existing high voltage electrical source or network which is controlled by the circuit interrupter to produce a cold cathode detector for determining the quality or amount of vacuum within the vacuum circuit interrupter. The central shield support ring which protrudes through the insulating casing of the circuit interrupter is utilized to supply electrical current to a current measuring device and to return one of the shields of the cold cathode detector to the common terminal of the aforementioned voltage source.