Bolt with a magnet

Details Bolt with a magnet Bolt with a magnet

1998-05-26

2000-06-20

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

H01F 702

Patent

active

060782382

ABSTRACT:
A bolt to be screwed-in into a lubricant-containing housing, including a magnet (4), a head portion (2) having rotation-transmitting surfaces, and a shank portion (3) extending from the head portion (2) and having an outer thread (31) and a recess (32) provided at a free end of the shank portion (3) for form-lockingly receiving the magnet (4) and having a depth (T) measured from the free end of the shank portion (3) and substantially corresponding to an axial width of the magnet (4).

REFERENCES:
patent: 2242830 (1941-05-01), Lisle
patent: 4752759 (1988-06-01), Kazuyuki
patent: 4763092 (1988-08-01), Tomita
patent: 4810148 (1989-03-01), Aisa et al.

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