Variable resistor device with reduced slider vibration

Details Variable resistor device with reduced slider vibration Variable resistor device with reduced slider vibration

1993-01-26

1994-09-06

Lateef, Marvin M.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338183, 338202, H01C 1038

Patent

active

053452151

ABSTRACT:
A variable resistor device including a casing and a shaft slidably connected to the casing along its axis. The casing houses a resistive substrate and a slider which is movable along a surface of the resistive substrate. The casing also defines a pair of guide grooves for receiving protrusions extending from the slider, thereby restraining the slider to slide along a path defined by the guide grooves. One side of the slider contacts an end of the shaft, and an opposite side of the slider is pressed by a spring. The spring force is parallel to but spaced away from the axis of the shaft; therefore, the forces acting on the slider create a torque. Because the slider is not connected to the shaft, the slider pivots within a small clearance provided by the guide groove in response to the torque, thereby causing the projections of the slider to press against the walls of the guide groove and thereby preventing vibration of the slider relative to the casing.

REFERENCES:
patent: 1908503 (1933-05-01), Behrend et al.
patent: 2900615 (1959-08-01), Gottschall et al.
patent: 2909750 (1959-10-01), Pitzer
patent: 3609623 (1971-09-01), Zdanys, Jr.
patent: 4053865 (1977-10-01), Brown, Jr.
patent: 4284969 (1981-08-01), Carbonneau
patent: 4479107 (1984-10-01), Bleeke
patent: 4575929 (1986-03-01), Bleeke
patent: 4583032 (1986-04-01), Nunziata et al.
patent: 4665376 (1987-05-01), Heinrich
patent: 4862982 (1989-09-01), Saito et al.
patent: 5095299 (1992-03-01), Wakamatsu

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