Rotary electric component

Details Rotary electric component Rotary electric component

1982-09-30

1984-10-16

Albritton, C. L.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338174, 338164, 338199, H01C 1032

Patent

active

044777957

ABSTRACT:
A rotary electric component such as a semifixed variable resistor comprises an insulating substrate having a shaft hole, a resistor mounted on the insulating substrate surrounding the shaft hole, a pair of electrodes mounted on the insulating substrate and connected to the resistor at ends thereof, a pair of terminals mounted on the insulating substrate and connected to the electrodes, respectively, a shaft rotatably mounted in the shaft hole and having a movable contact held in sliding contact with the resistor, a cover mounted on the shaft over the insulating substrate and covering the movable contact, the cover having a skirt spaced from the insulating substrate by a gap, and a body of synthetic resin mounted on the insulating substrate and a portion formed as a dust wall covering the gap.

REFERENCES:
patent: 1672123 (1928-06-01), Hartranft
patent: 2894238 (1959-07-01), Burden
patent: 3200359 (1965-08-01), Hulbert
patent: 3639877 (1972-02-01), Fresard et al.
patent: 4329676 (1982-05-01), McDonald et al.

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