Pressure sensitive transducer with pressure sensitive layer incl

Details Pressure sensitive transducer with pressure sensitive layer incl Pressure sensitive transducer with pressure sensitive layer incl

1999-06-29

2000-09-19

Easthom, Karl D.

Electrical resistors

Mechanically variable

Deformable

338 47, 338 99, 338101, 338 5, H01C 1010

Patent

active

061218707

ABSTRACT:
Pressure sensitive layers are disposed on respective resin films through electrodes to face each other, and include high conductivity flaky carbon particles and low conductivity amorphous-based carbon particles. The two kinds of carbon particles are bound together by a resin-system binder. Accordingly, when a pushing force is applied to the resin films, an average distance between the carbon particles is decreased to cause a tunnel conduction phenomenon, resulting in a decrease in conductive resistance between the electrodes. As a result, a pressure sensing property can be made gentle.

REFERENCES:
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patent: 4295699 (1981-10-01), DuRocher
patent: 4745301 (1988-05-01), Michalchik
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patent: 4876419 (1989-10-01), Lodini
patent: 5656988 (1997-08-01), Podoloff
patent: 5886615 (1999-03-01), Burgess

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