Electrical resistors – Mechanically variable – With switch actuated by resistor actuator
Patent
1980-01-10
1982-05-11
Albritton, C. L.
Electrical resistors
Mechanically variable
With switch actuated by resistor actuator
338163, 338164, 338172, 338184, 338188, H01C 1050
Patent
active
043296769
ABSTRACT:
A potentiometer providing a variable electrical resistance between input and output terminals for use in electronic circuits, as for volume control, light control, instrumentation control or the like. A potentiometer includes a housing assembly comprised of a cover assembled to a base. An electrical wiper is mounted to a rotor assembled to the cover and has a contact portion movable along a C-shaped resistive strip on the base. Stops limit the extremes of movement of the wiper with respect to the resistive strip. An annular seal disposed between the cover and a rotating portion of the rotor is effective to keep out dirt and other particulate matter from the potentiometer and provides continuous brake friction upon rotation of the rotor. In one form of the potentiometer, the housing assembly includes a body located between the cover and base and a switch mechanism is operably connected to the rotor to selectively locate an electrical contact in an on or off position.
REFERENCES:
patent: 2081227 (1937-05-01), de Vries
patent: 3123795 (1964-03-01), Bender
patent: 3355693 (1967-11-01), Van Benthuysen et al.
patent: 3597720 (1971-08-01), Burgess
patent: 3601743 (1971-08-01), Mathison et al.
patent: 3629780 (1971-12-01), Burcham
patent: 3906429 (1975-09-01), Rhodes
patent: 4081782 (1978-03-01), Hildreth et al.
patent: 4117444 (1978-09-01), Hildreth et al.
Hagen Donald R.
McDonald Gerald H.
Albritton C. L.
Resistance Technology Inc.
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