Magnetic proximity switch

Details Magnetic proximity switch Magnetic proximity switch

1979-11-29

1982-09-14

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

Plural magnets

335205, H01H 900

Patent

active

043498000

ABSTRACT:
An improved magnetic proximity switch which comprises an auxiliary permanent magnet for retaining normal closing and a yoke arranged so that the magnetic path of said auxiliary permanent magnet and the magnetic path formed by the magnetic flux from outside are added each other. Thus, the switch has such merits that the contact pressure at the time of normal closing is raised, the working sensitivity is enhanced, with a small external magnet, without mis-working due to shock or vibration from outside and the like.

REFERENCES:
patent: 3161742 (1964-12-01), Bagno
patent: 3205323 (1965-09-01), Deshautreaux
patent: 4039985 (1977-08-01), Shlesinger et al.
patent: 4165935 (1979-08-01), Bongort
patent: 4186362 (1980-01-01), Kondo et al.

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