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:
May. 27, 1986
Filed:
Feb. 07, 1985
Applicant:
Inventors:
Harvey W Mikulecky, Oconomowoc, WI (US);
Todd K Knapp, Waukesha, WI (US);
Assignee:
RTE Corporation, Waukesha, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ; H01H / ;
U.S. Cl.
CPC ...
335-6 ; 335 37 ; 335164 ;
Abstract
A low oil lock-out and/or trip apparatus for a submersible transformer circuit breaker of the type having a manually operated crank shaft assembly for opening and closing the circuit breaker and a fault trip assembly for opening the circuit breaker under fault current conditions, the apparatus including a float assembly which is responsive to changes in oil level in said transformer and a rod carried by said float for blocking the movement of the crankshaft and a trip member for tripping the trip assembly when the oil level drops below a predetermined level in the transformer.