Time delay fuse

Details Time delay fuse Time delay fuse

Filed on

1994-01-25

Date issued

1995-04-11

Examiner

Donovan, Lincoln

Patent Class

Electricity: electrothermally or thermally actuated switches

SubClass

Electrothermally actuated switches

SubSubClass

Fusible element actuated

Other Related Categories

337165, H01H 8504

Type

Patent

Status

active

Patent number

054062446

Description

ABSTRACT:
A time delay fuse that includes a trigger mechanism and fusible element within a cylindrical fuse casing that is closed by end ferrules. The trigger mechanism includes a plunger, a spring, and a cylindrical shell that contains the spring and plunger in a loaded condition. The shell has an end that wraps around an end of the fuse casing and is frictionally contacted by the end ferrule thereover.

REFERENCES:
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patent: 2876312 (1959-03-01), Frederick
patent: 3089012 (1963-05-01), Abrams
patent: 3593249 (1971-07-01), Sedgwick
patent: 3636491 (1972-01-01), Cameron
patent: 3678430 (1972-07-01), Gaia
patent: 3723931 (1973-03-01), Urani
patent: 4166267 (1979-08-01), Belcher et al.
patent: 4414526 (1983-11-01), Panaro
patent: 4562420 (1985-12-01), Kowalik et al.
patent: 4593262 (1986-06-01), Krueger
patent: 4994779 (1991-02-01), Douglass
patent: 5043689 (1991-08-01), DiTroia et al.
patent: 5075664 (1991-12-01), Spalding et al.
patent: 5235306 (1993-08-01), Kalra et al.
patent: 5247274 (1993-09-01), Gurevich

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