Spiral wound fuse bodies

Details Spiral wound fuse bodies Spiral wound fuse bodies

1980-10-07

1984-04-24

Beha, Jr., William H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337166, 337295, 337297, H01H 8504

Patent

active

044451067

ABSTRACT:
A spiral wound fuse body comprises a core of insulating material formed by a limp, dead yarn made of twisted together initially sizing-coated strands of fine ceramic filaments, where the sizing was subsequently removed so that there is no sizing to leave a conductive residue under fuse blowing conditions. Such a fuse body is mass produced by spiral winding fuse wire upon a continuous length of said yarn unwinding from a spool upon which the yarn was wound when the sizing was removed. The resulting self-supporting body can be wound into rolls and subsequently unwound so that individual fuse bodies can be severed from the end of the unwinding roll of fuse body-forming material.

REFERENCES:
patent: 2672540 (1954-03-01), Dewey
patent: 2879364 (1959-03-01), Mucher
patent: 3845439 (1974-10-01), Deelman
patent: 4122426 (1978-10-01), Marvo
patent: 4177444 (1979-12-01), Taki
patent: 4189696 (1980-02-01), Beswick et al.
patent: 4297666 (1981-10-01), Asdollahi

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