H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/122
H01H 85/00 (2006.01)
Patent
CA 1129914
17 48,283 ABSTRACT OF THE DISCLOSURE A low current, expulsion-type fuse is taught. The low current, expulsion-type fuse has a movable spring- biased rod which is capable of moving through a ferrule of the fuse to cause an unlatching operation. The rod is maintained in a spring-loaded disposition by a tripping mechanism with a mechanical advantage of sufficient magni- tude to allow a relatively thin fuse strain element to maintain the rod in the spring-loaded disposition. An eye hook extends from one end of the aforementioned rod and is captured by a spring-loaded lever during the manufacture of the fuse. The spring loading on the lever is such that it will release the aforementioned eye to allow the rod biasing spring to move the rod unless the aforementioned lever is retained by a retaining member. The retaining member operates through the aforementioned lever against the spring thereof. It is maintained in the retaining disposition by the tensile force of the fuse strain ele- ment. When the fuse element blows, the retaining member and lever are moved by the main fuse rod spring to release the captured eye portion of the fuse rod.
337305
Burchell David P.
Miller Harold L.
Mcconnell And Fox
Westinghouse Electric Corporation
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