Guided variable resistor

Details Guided variable resistor Guided variable resistor

1989-08-08

1990-12-04

Reynolds, Bruce A.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338162, 338176, 338157, H01C 1028, H01C 1038

Patent

active

049756770

ABSTRACT:
A variable resistor including a resistive element and a conductive element supported by a plate. Contacting terminals are provided on one or more ends of each element. A carriage is slidably supported above the elements and a conductive roller is supported from the carriage by a suspension member that biases the conductive roller against the elements. The effective length of the current path through the resistive element is varied by using the conductive roller to electrically connect the two elements to one another along different portions of their length. In a preferred embodiment, the carriage moves under the guidance of at least one guide bar and the conductive roller is suspended from the carriage by a coiled spring.

REFERENCES:
patent: 298073 (1884-05-01), Doyle
patent: 3384850 (1968-05-01), Cameron et al.
patent: 3671915 (1972-06-01), Sasaki et al.

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