Time delay indicator fuse

Details Time delay indicator fuse Time delay indicator fuse

1985-03-22

1986-06-03

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337165, 337183, 337244, 337164, H01H 8504, H01H 8530

Patent

active

045932620

ABSTRACT:
A fuse (12) for protecting a circuit and comprising a tube (14) of insulating material having an inner wall surface (16) and an outer wall surface (18) so as to form a fuse housing. The fuse includes two opposite axial ends (20) and (22), and a first (24) and a second conductive fuse terminal (26) are secured to the tube adjacent each of those opposite axial ends, respectively. Serially-located elements (28) are disposed within the fuse housing and provide electrical continuity between the first fuse terminal and the second fuse terminal. The elements comprise stressed spring means (30) and resistor means (32), with the spring means having a proximate end (40) secured to the fuse adjacent the first fuse terminal and a distal end (41) secured through a meltable junction (34) to the resistor means.

REFERENCES:
patent: 2111749 (1938-03-01), Bussmann
patent: 4058784 (1977-11-01), Gaia

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