Magnetic drain bolt

Details Magnetic drain bolt Magnetic drain bolt

1995-02-23

1995-11-07

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

184 625, H01F 702

Patent

active

054650780

ABSTRACT:
A magnetic drain bolt comprising a bolt body and a magnet. The bolt body comprises of a male-threaded member and a head member, the male-threaded member having a fastening protuberance formed at an end thereof. The magnet is comprised of a sintered ferrite material and has a recess formed at a bottom end thereof for receipt of the fastening protuberance, the recess having a depth sized equivalent to a height of the fastening protuberance, the magnet having a diameter slightly smaller than a diameter of the male-threaded member. The fastening protuberance is secured with an adhesive to the magnet within the recess whereby the fastening protuberance provides additional support for securing the magnet to the bolt body.

REFERENCES:
patent: 1281842 (1918-10-01), Rosnick et al.
patent: 2242830 (1941-05-01), Lisle
patent: 2755932 (1956-07-01), Cohn
patent: 2870384 (1959-01-01), Brooks
patent: 3370144 (1968-02-01), Arthur et al.
patent: 3800914 (1974-04-01), Miyata
patent: 4810148 (1989-03-01), Aisa et al.
patent: 4834464 (1989-05-01), Frehse
patent: 5089129 (1992-02-01), Brigman
patent: 5150769 (1992-09-01), Major et al.
patent: 5150975 (1992-09-01), Major et al.
patent: 5314625 (1994-05-01), Farnelli

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