Flux proof rotary switch

Details Flux proof rotary switch Flux proof rotary switch

1989-01-13

1990-03-20

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 8R, 200 8A, 200 11K, 200 14, H01H 1958, H01H 2176

Patent

active

049103644

ABSTRACT:
A novel rotary switch includes metal contact segments integrally molded into annular plastic frame members which segments are then further sealed to prevent passage of flux or other contaminants from reaching the interior of the switch. Further, each contact segment has an arcuate interior contact portion which engages a rotating bridging member on the inner periphery of the arcuate surface. The arcuate segments are spaced together so that the bridging member that conducts signals to the arcuate surface never contacts a plastic surface. A toothed member is provided to cam the bridging member out of contact with one contact segment before making contact with the next adjacent contact segment.

REFERENCES:
patent: 2988606 (1961-06-01), Allison
patent: 3119906 (1964-01-01), Mason
patent: 3144711 (1964-08-01), Stevens
patent: 3525827 (1970-08-01), Allison
patent: 3571535 (1971-03-01), Beaver et al.
patent: 3668338 (1972-06-01), O'Malley

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