Sliding type variable resistor

Details Sliding type variable resistor Sliding type variable resistor

1995-02-07

1997-09-30

Walberg, Teresa J.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338118, 338161, 338184, H01L 1038

Patent

active

056730152

ABSTRACT:
The present invention provides a sliding type variable resistor in which the shaking of a knob portion is prevented, and in which the slider is able to slide smoothly. A sliding type variable resistor is provided having a structure comprising a resin substrate having a carbon film resistor printed on the surface in a straight line and lead terminals for external lines, a slider having a main body portion provided with a sliding shoe which slides in abutment against the carbon film resistor and a knob portion, and a frame body which holds the slider main body portion and the resin substrate inside and in which only the knob portion of the slider protrudes outside. A guide rail is provided in parallel to the sliding direction of the slider on the side surface of the frame body and a depressed part which is to be engaged with the above-mentioned guide rail is provided on the side surface of the slider main body portion.

REFERENCES:
patent: Re28026 (1974-05-01), Oka
patent: 3412361 (1968-11-01), Lovejoy et al.
patent: 3550059 (1970-12-01), Barden et al.
patent: 3566330 (1971-02-01), Ichikawa
patent: 3671915 (1972-06-01), Sasaki et al.
patent: 3735327 (1973-05-01), Rozema et al.
patent: 4045765 (1977-08-01), Imamura
patent: 4047146 (1977-09-01), Takeyama
patent: 4274074 (1981-06-01), Sakamoto
patent: 4479107 (1984-10-01), Bleeke
patent: 5339065 (1994-08-01), Slenker

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