Heat actuated fuse apparatus with solder link

Details Heat actuated fuse apparatus with solder link Heat actuated fuse apparatus with solder link

1991-06-03

1992-03-17

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

337297, 337403, 337232, 29623, H01H 3776, H01H 8504

Patent

active

050972472

ABSTRACT:
An apparatus for protecting circuitry includes a heat actuated fuse which opens at a predetermined temperature and a resistive device disposed proximate the fuse for heating the fuse in response to an electrical current passed through the device. The fuse includes first and second electrodes bridged by a solder link which melts at the predetermined temperature and retreats to the electrodes. A quantity of flux-containing material is disposed on the link to promote rapid and complete retreat of the solder when the fuse is actuated.

REFERENCES:
patent: 4494104 (1985-01-01), Holmes
patent: 4533896 (1985-08-01), Belopolsky
patent: 4626818 (1986-12-01), Hilgers
patent: 4652848 (1987-03-01), Hundrieser

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