Washer type pressure sensor

Details Washer type pressure sensor Washer type pressure sensor

1984-01-10

1986-01-28

Ruehl, Charles A.

Measuring and testing

Fluid pressure gauge

Electrical

73115, 73761, 73DIG4, 310338, G01L 908, G01M 1500

Patent

active

045663165

ABSTRACT:
Disclosed is a washer type pressure sensor suitable for attachment to an opening for inserting an ignition plug of an engine. The sensor is provided with a pair of ring piezoelectric elements opposed to each other through a ring electrode. A first and a second pressure receiving ring plate are disposed on an upper and a lower surface of the piezoelectric elements, respectively. The first pressure receiving plate is provided with a cylindrical protecting portion extending from the inner periphery thereof to protect an inner periphery of the sensor.

REFERENCES:
patent: 3151258 (1964-09-01), Sonderegger et al.
patent: 3566163 (1971-02-01), Fischer et al.
patent: 3614488 (1971-10-01), Sonderegger et al.
patent: 4088015 (1978-05-01), Wolfer
patent: 4483181 (1984-11-01), Maekawa et al.

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