Current limiting fuse having transverse parallel weak spots

Details Current limiting fuse having transverse parallel weak spots Current limiting fuse having transverse parallel weak spots

1981-01-08

1982-09-14

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337290, H01H 8504

Patent

active

043498027

ABSTRACT:
A current limiting fuse includes a fusible strip having semi-circular apertures formed therein, centrally disposed between the longitudinal edges of the strip. The diametric edges of the apertures lie transverse to the longitudinal edges of the fusible strip. The curved edges of the apertures are disposed in opposing relationship. Electrical weak spots which are less conductive than the remaining areas of the strip are defined between the semi-circular apertures and the longitudinal edges of the fusible strip. Semi-circular cut-outs may be included along the longitudinal edges of the fusible strip adjacent the centrally disposed semi-circular apertures to define the electrical weak spots between the cut-outs and centrally disposed apertures.

REFERENCES:
patent: 1857097 (1932-05-01), Glowacki
patent: 2028721 (1936-01-01), La Mar
patent: 2489501 (1949-11-01), Rensner
patent: 2720567 (1955-10-01), Detch
patent: 4017817 (1977-04-01), Ranzanigo
patent: 4041435 (1977-08-01), Gaia
patent: 4118684 (1978-10-01), Mollenhoff

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