Time delay electrical fuse and method of making same

Details Time delay electrical fuse and method of making same Time delay electrical fuse and method of making same

1986-12-15

1988-02-23

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337163, 29623, H01H 7120

Patent

active

047273470

ABSTRACT:
The present invention relates generally to a three chamber ferrule type fuse comprising a tube of dielectric material having a tube wall and a bore, providing a unitary sub-assembly comprising a plunger and plunger guide, and two short circuit elements, a coil spring and a ring, having the tube wall staked forming a support for the ring inserting the sub-assembly into said bore of the tube so that one end thereof rests on said ring, having the coil spring under compression, and staking the sub-assembly in place. The construction facilitates assembly by automatic machinery.

REFERENCES:
patent: 2577531 (1951-12-01), Laing
patent: 2688676 (1954-09-01), Laing
patent: 2688677 (1954-09-01), Laing
patent: 2694124 (1954-11-01), Laing et al.
patent: 2787684 (1957-04-01), Laing
patent: 3253104 (1966-05-01), Fister
patent: 3294937 (1966-12-01), Kozacka
patent: 3854111 (1974-12-01), Urani
patent: 4414526 (1983-11-01), Panaro
patent: 4417224 (1983-11-01), Ross
patent: 4533895 (1985-08-01), Kowalik
patent: 4562420 (1985-12-01), Kowalik

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