Electrical resistors – Mechanically variable – Deformable
Patent
1988-09-26
1989-05-23
Goldberg, E. A.
Electrical resistors
Mechanically variable
Deformable
338 99, H01C 1010
Patent
active
048334405
ABSTRACT:
An apparatus for varying impedance includes a first conductive member, a second member associated therewith, and a third wiper member electrically contacting the first and second members. Use of a conductive rolling member as the third wiper member minimizes wear and degradation of all members. Alternately, or in conjunction with a rolling wiper member, use of a conductive elastomer further eliminates wear.
REFERENCES:
patent: 2744981 (1956-05-01), Spears
patent: 4163204 (1979-07-01), Sado et al.
patent: 4426884 (1984-01-01), Polchaninoff
Eaton Corporation
Goldberg E. A.
Johnston R. A.
Lateef M. M.
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