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:
Mar. 24, 1987
Filed:
May. 21, 1984
Applicant:
Inventor:
Botho Ziegenbein, Neckarsteinach, DE;
Assignee:
Brown, Boveri & Cie AG, Mannheim, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ; H01H / ; H01H / ;
U.S. Cl.
CPC ...
361 54 ; 337 15 ; 361 56 ;
Abstract
Varistor fuse element for protecting an electric circuit against overvoltages, including a thermal fuse, a varistor combined with the thermal fuse for for tripping the thermal fuse with joulean or ohmic heat losses of the varistor, first and second conductors for supplying current to the fuse element, and first and second switch contacts each being connected to a respective one of the conductors for bridging the varistor, the contacts being closed when the thermal fuse is tripped by the varistor.