Pneumatic switch potentiometer

Details Pneumatic switch potentiometer Pneumatic switch potentiometer

1984-02-02

1985-06-25

Envall, Jr., Roy N.

Electrical resistors

Resistance value responsive to a condition

Fluid- or gas pressure-actuated

338179, 200 83J, H01L 1010, H01C 1038

Patent

active

045256985

ABSTRACT:
A pneumatically actuated pressure transducer has a wiper assembly which is movable from an off position through a range of positions wherein the transducer has a varying voltage output. The pressure transducer comprises a high thermal conductivity substrate which forms a base for a potentiometer element and a resistance path coated onto the substrate. The resistance path includes a first area of low resistance material and a second area of high resistance material which meet in a chevron shaped transition zone. An insulating material coated onto the substrate defines the off position for the transducer.

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patent: 4334131 (1982-06-01), Cooper et al.
patent: 4365406 (1982-12-01), Neill et al.
patent: 4449112 (1984-05-01), Gould

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