Finger operated switching device

Details Finger operated switching device Finger operated switching device

1976-01-28

1977-10-18

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

Plural magnets

200 5E, 200 67F, H01H 5127

Patent

active

040549445

ABSTRACT:
A finger operated switching device includes a key assemblage having a key and a key magnet which moves relative to a biasing magnet wherein the magnets are so dimensioned and mutually positioned so that the key assemblage is biased to a retracted position and when the key assemblage is pushed to an extended position the force required first increases to a peak and then rapidly decreases.

REFERENCES:
patent: 3268673 (1966-08-01), Bilek
patent: 3588766 (1971-06-01), Baermann
patent: 3617661 (1971-01-01), Bloomfield et al.
patent: 3815066 (1974-06-01), Vinal

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