Rotary variable resistor

Details Rotary variable resistor Rotary variable resistor

1980-10-14

1982-10-05

Albritton, C. L.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338132, 338134, 338199, H01C 1032

Patent

active

043530532

ABSTRACT:
A rotary variable resistor comprising an insulation substrate having a partial-ring form resistor layer on the surface thereof, an operational shaft rotatably supported at a central portion of the insulation substrate, a brush supporter of a rotational body disposed substantially at one tip of the operational shaft and holding a brush rotatably sliding on the resistor layer, and a cover case of an insulation mold material covering the brush and the brush supporter, the improvement is that the rotational movement of the operational shaft is effectively stopped by a protrusion disposed on the inner wall of a thick part of a plastic mold cover case and on the side of lead terminals.

REFERENCES:
patent: 3201737 (1965-08-01), Mathison
patent: 3456227 (1969-07-01), Paine et al.
patent: 3588778 (1971-06-01), Edwards, Jr.
patent: 3657688 (1972-04-01), Casey et al.
patent: 3676822 (1972-07-01), Slagg et al.
patent: 3997864 (1976-12-01), Oka et al.
patent: 4114132 (1978-09-01), DeRouen et al.

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