Flexible switch contact having a precious metal contact surface

Details Flexible switch contact having a precious metal contact surface Flexible switch contact having a precious metal contact surface

1978-06-02

1979-10-16

Schmidt, Frederick R.

Electricity: circuit makers and breakers

Electric switch details

Contact

84 101, 84DIG7, 200262, 200290, H01H, H01H 118

Patent

active

041714750

ABSTRACT:
A switch mechanism designed to overcome the problem of electrical noise employs a compound movable contact assembly, including a coil spring member and a smooth-surfaced wire contact member mounted thereon. The flexing of the coil spring provides an advantageous rolling, wiping motion for the wire contact member, without the noise-producing electrical discontinuities associated with earlier mechanisms in which the coil spring itself made direct electrical contact.

REFERENCES:
patent: 2067485 (1937-01-01), Gardner et al.
patent: 2630503 (1953-03-01), Larsen et al.
patent: 2881293 (1959-04-01), Erickson
patent: 3290472 (1966-12-01), Savage
patent: 4072834 (1978-02-01), Godfrey

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