Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1975-09-18
1976-10-12
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337186, 337228, H01H 8502
Patent
active
039861589
ABSTRACT:
A fuse having a composite casing. It includes a radially inner tubular portion that is circular in cross-section, of uniform wall thickness, and houses the fusible element means and a body of pulverulent arc-quenching filler. The casing structure further includes a plurality of angularly displaced rods of an electric insulating material having substantially the same length as the tubular portion of uniform wall thickness of the casing arranged parallel to the axis of said tubular portion, in abutting relation to the outer surface thereof, and adhesively affixed to said outer surface. A pair of spaced external terminal plates closes the tubular portion of the casing and is provided with fasteners having shanks projecting into the end surfaces of said plurality of rods.
REFERENCES:
patent: 2328825 (1943-09-01), McMahon
patent: 3911385 (1975-10-01), Blewitt et al.
Broome Harold
Salzer Erwin
The Chase-Shawmut Company
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