Patent · US Active

Nickel alloy precision force transducer with strain gauge elements

US7732721B2 · kind B2 · utility

2Cited by

5References

5Claims

0Family size

Assignee

Sartorius AG · DE

Inventors

Tanja Mueck · Langelsheim, DE
Volker Relling · Bad Segeberg, DE
Werner Schulze · Göttingen, DE
Michael Steps · Hamburg, DE
Helga Covic · Oettingen, DE

Key dates

Filing date	Jun 12, 2008
Grant date	Jun 8, 2010
Priority date	—
Expiry date	Jun 12, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01L1/2287
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A precision force transducer having a spring element (1) whose load-dependent deflection is converted into an electrical signal by means of strain gauge elements (10). The spring element (1) is made of a precipitation-hardenable nickel-based alloy with a nickel content in the range of 36 to 60 percent and a chromium content in the range of 15 to 25 percent. The strain gauge elements (10) are composed of a polymer-free layered film system. This makes it possible to produce a precision force transducer that features great accuracy, low creep and low moisture sensitivity.

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