Piezoelectric pressure sensor

Details Piezoelectric pressure sensor Piezoelectric pressure sensor

2007-11-20

2010-11-23

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S346000, C310S348000

Reexamination Certificate

active

07839056

ABSTRACT:
A piezoelectric pressure sensor includes—an outer housing separated by an annular gap from an inner housing, which inner housing is attached to the outer housing on the pressure side. At least one piezoelectric measuring element is positioned between a diaphragm placed on the pressure side of the inner housing and a base part of the inner housing. The inner housing is provided with a massive cylindrical wall throughout whose wall thickness essentially corresponds to the thickness of the adjacent outer housing. In the annular gap between the outer housing and the inner housing a heat-transfer liquid is contained, or in the space between the base part of the inner housing and an interior shoulder of the pressure sensor a heat-transfer spring or bellows is located.

REFERENCES:
patent: 3171989 (1965-03-01), Hatschek
patent: 4982608 (1991-01-01), Marki et al.
patent: 6105434 (2000-08-01), Engeler
patent: 6127770 (2000-10-01), Hauser et al.
patent: 215704 (1961-06-01), None
patent: 247028 (1966-05-01), None
patent: 384676 (1987-12-01), None
patent: 002036 (1998-02-01), None

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