Variable resistance control

Details Variable resistance control Variable resistance control

1974-02-04

1976-03-30

Reynolds, Bruce A.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338174, 338202, H01L 1034

Patent

active

039478009

ABSTRACT:
A variable resistance control comprises a resistance element supported on an electrically conductive supporting plate. A driver connected to the supporting plate is provided with a knob and with an integral stabilizing and particle excluding skirt. The ratio of the diameter of the stabilizing skirt to the diameter of the knob is relatively high. The stabilizing skirt rotatably engages the resistance element and encloses a contactor carried by the driver and prevents foreign particles from engaging the contactor. Indicator means integral with the stabilizing skirt and projecting beyond a truncated portion of the knob visually indicate the angular position of the contactor. The indicator means also engages a stop integral with the supporting plate and extending between the legs of the resistance element to arrest rotation of the contactor. Terminals provided with staggered ears are secured to the legs of the resistance element.

REFERENCES:
patent: 3032734 (1962-05-01), Zunker et al.
patent: 3205466 (1965-09-01), Youngbeck et al.
patent: 3343116 (1967-09-01), Budd et al.
patent: 3375478 (1968-03-01), Benthuysen et al.
patent: 3421133 (1969-01-01), Benthuysen et al.
patent: 3585559 (1971-06-01), Rozema et al.
patent: 3772630 (1973-11-01), Falco

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