Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...
Patent
1990-06-15
1992-05-05
Lateef, Marvin M.
Electrical resistors
Mechanically variable
Movable contact electrically adjustable over length of...
338226, 338310, H01C 1030
Patent
active
051111780
ABSTRACT:
An electrically conductive polymer film composition includes a polymeric resin, an electrically conductive substance intimately mixed in sufficient quantity with the polymeric resin to render the polymeric resin electrically conductive, and particles, such as fibers or spheres of appropriate size, admixed with the polymer composition in sufficient quantity so that in the cured polymer film the particles protrude from the surface of the film and render the surface uneven on a micro scale. The cured polymer film composition of the invention is incorporated in potentiometers and similar electric and electronic devices as a thick film where a contact wiper rides substantially continuously in contact with the protruding fibers.
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Bourns Inc.
Klein Howard J.
Lateef Marvin M.
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