The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2010
Filed:
Nov. 20, 2007
Alexander Friedl, Graz, AT;
Alexander Friedl, Graz, AT;
Piezocryst Advanced Sensorics GmbH, Graz, AT;
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.