Patent · US Active

Part for measuring forces or pressures, and sensor comprising such a part

US8074502B2 · kind B2 · utility

3Cited by

2References

17Claims

0Family size

Assignee

Kistler Holding AG · CH

Inventors

Michael Mueller · Nagold, DE
Andrea Bertola · Zürich, CH
Kay Unzicker · Jestetten, DE

Key dates

Filing date	Nov 24, 2008
Grant date	Dec 13, 2011
Priority date	—
Expiry date	Nov 24, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01L23/222
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A part to be mounted into force or pressure sensors includes an annular measuring element made of piezoelectric material. First and second electrodes rest against respective opposite sides of the measuring element and are provided with wires. An electrically insulating transmission member laterally adjoins the first electrode, across from the measuring element. Another electrically insulating insulation member laterally adjoins the second electrode, across from the measuring element. All components are mounted within the part in such a way as to be centered relative to each other. The external face of the transmission member and the external face of the insulation member which face away from and run parallel to the electrodes are designed in a very planar manner, having a levelness of less than 10 μm.

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