Waterproof control knob assembly with integral switch

Details Waterproof control knob assembly with integral switch Waterproof control knob assembly with integral switch

1982-09-29

1984-03-27

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

200155R, 200264, 200159B, 338163, 338198, H01H 1306, H01H 1928

Patent

active

044396546

ABSTRACT:
A rotatable control with an integral switch comprises conductive inner and outer shaft in a concentric configuration. The inner and outer shaft are electrically insulated from one another and frictionally coupled to allow concentric simultaneous rotation. The assembly is covered with a flexible insulating shroud which has a switch contact located on the upper interior surface thereof. Conductive spring members are clipped around the lower portion of the inner and outer shaft to allow electrical connection to a circuit board.

REFERENCES:
patent: 3244822 (1966-04-01), Elliott
patent: 3728511 (1973-04-01), George et al.
patent: 3735068 (1973-05-01), Yanaga et al.
patent: 3742165 (1973-06-01), Hellman
patent: 3863039 (1975-01-01), Tygard et al.
patent: 4110721 (1978-08-01), Nakanishi et al.
patent: 4237629 (1980-12-01), Schmidt
patent: 4298778 (1981-11-01), Beresford-Jones
K. B. Denver, Inc., "Keyboards-Snap Dome Switches" Sales Pamphlet.

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