Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...
Patent
1993-12-02
1996-01-30
Lateef, Marvin M.
Electrical resistors
Mechanically variable
Movable contact electrically adjustable over length of...
338148, 338128, 338180, H01C 1032
Patent
active
054883490
ABSTRACT:
A multiple range variable resistor and potentiometer suitable for use in the repair or manufacture of hearing aids and other miniature applications is disclosed. The user of the device can select the desired resistance range thereby allowing one component to be used in many different applications and reducing inventory requirements. It provides increased resistance to contamination of the internal components compared to conventional hearing aid volume controls and is not damaged by over-turning of the control knob in either direction. It can be manufactured for the same cost as conventional single range potentiometers.
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Erickson Bruce L.
Stull Allen H.
Jennings Larry M.
Lateef Marvin M.
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