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:
Feb. 10, 1976
Filed:
Nov. 25, 1974
Donald L Cummins, Anderson, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
The fuse element of a thermal fuse and heater assembly is connected in series in the energizing circuit of the generator field winding of an electrical generating system between the field winding and the current carrying elements of an associated voltage regulator output switch. System potential is applied across circuitry responsive to system overvoltage conditions for completing an energizing circuit for the heater element of the thermal fuse and heater assembly. With sustained system overvoltage conditions, the heater element heats the thermal fuse element to a temperature at which the fuse element 'burns out' to interrupt the generator field winding energizing circuit.