Potentiometer

Details Potentiometer Potentiometer

1998-07-08

2000-02-15

Gellner, Michael L.

Electrical resistors

Resistance value responsive to a condition

Float actuator

338117, 338125, 338160, 338185, 338307, H01C 1014

Patent

active

060257725

ABSTRACT:
A resistor card for a potentiometer to measure the fuel in a fuel tank consists of a non-conductive substrate with a plurality of elongate conductive contacts deposited. The contacts have an elevation above the surface of the substrate and the contacts are oriented in parallel relationship to each other to form a wiper track across which a wiper is movable. To reduce the rate at which the upper surfaces of the contacts are worn away by movement of the wiper, a non-conductive filler is deposited between the conductive materials which form the lands.

REFERENCES:
patent: 1572538 (1926-02-01), Kiaerbye
patent: 4924704 (1990-05-01), Gaston
patent: 4931764 (1990-06-01), Gaston
patent: 5341679 (1994-08-01), Walkowski et al.
patent: 5554965 (1996-09-01), Sundberg

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