H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/151
H01H 85/26 (2006.01) H01H 69/02 (2006.01)
Patent
CA 1094618
ABSTRACT: End ferrules of a current limiting fuse are mounted to the end of a relatively fragile non- metallic insulator housing of the fuse by magnetic pulse forming. The end ferrules are formed so that there is a flat circular end wall and an annular mounting flange. The flat circular end walls are of a first thickness sufficient to withstand mechanical forces that may be experienced due to fuse operation or due to mounting of the fuse. The annular mounting flange is of a second thickness less than the first thickness so that the flange can be compressed around the housing by magnetic pulse forming without causing undue stress to be exerted on the housing that may result in damage to the housing. A unique elastomer ring seal is provided between the housing and the end ferrule to assure a moisture tight seal. The method disclosed is applicable to allow compressive attach- ment of a variety of metallic members to a variety of rela- tively fragile members so that the strength of the metallic member may be maintained, but the metallic member may be compressed without damage to the fragile member.
262492
Osler Hoskin & Harcourt Llp
S&c Electric Company
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