Patent · US Active

Pressure-measuring device

US7694572B2 · kind B2 · utility

1Cited by

8References

9Claims

0Family size

Assignee

VEGA Grieshaber KG · DE

Inventor

Thomas Kopp · Ludwigsburg, DE

Key dates

Filing date	Aug 19, 2008
Grant date	Apr 13, 2010
Priority date	—
Expiry date	Oct 14, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01L19/04
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A pressure-measuring device has an initial pressure-measuring cell (1′) with a first thermal expansion coefficient (α1), a first housing (1), which is surrounded circumferentially by a second housing (1) having a second thermal expansion coefficient (α2) which is greater than the first thermal expansion coefficient (α1), and an O-ring, which is positioned between the pressure-measuring cell (1′) and the second housing (2), such that a third housing (3) is provided which circumferentially encloses both the pressure-measuring cell (1′) and the second housing, (2) and which has a third thermal expansion coefficient (α3) that is less than or equal to the first thermal expansion coefficient (α1).

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