Patent · US Active

Device for measuring the twist of a rotating shaft

US8587780B2 · kind B2 · utility

3Cited by

5References

7Claims

0Family size

Assignee

SNECMA · FR

Inventors

Francois Gallet · Paris, FR
Stephane Rousselin · Héricy, FR

Key dates

Filing date	Jan 7, 2010
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Aug 15, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01L3/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Measuring the twist of a rotating shaft by means of a laser beam and polarizing filters. The measurement device includes a laser beam generator, two polarizing filters secured to the shaft and spaced apart from each other, and a laser radiation receiver receiving the laser beam after it has passed through both filters.

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