Patent · US Expired

Pressure sensor

US6609426B1 · kind B1 · utility

3Cited by

7References

15Claims

0Family size

Assignee

TRW Automotive Electronics and Components GmbH · DE

Inventors

Markus Altmann · Cincinnati, US
Robert Skofljanec · Radolfzell, DE
Clemens Wolfgang Müller · Zürich, CH

Key dates

Filing date	Oct 25, 2000
Grant date	Aug 26, 2003
Priority date	—
Expiry date	Oct 25, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01L9/0048
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A pressure sensor comprises a sensor diaphragm which on one of its surfaces can be acted upon by the fluid pressure to be defected. The sensor diaphragm is rigidly supported at its opposite surface. It is made of an elastomeric material of an electrically non-conducting material wherein fine particles of electrically conducting material are homogenously embedded and distributed in such a density that a compression of the sensor diaphragm caused by the fluid pressure results in a measurable change in its electrical resistivity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.