Patent · US Active

Absolute measuring length measuring system

US9976878B2 · kind B2 · utility

1Cited by

3References

5Claims

0Family size

Assignee

BALLUFF GMBH · DE

Inventors

Thomas Burkhardt · Cary, US
Achim Zern · Heilbronn, DE

Key dates

Filing date	Dec 22, 2016
Grant date	May 22, 2018
Priority date	—
Expiry date	Dec 22, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/2495
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor to be moved relative to the measuring gauge, wherein the measuring gauge includes an incremental track and at least one absolute track and wherein the incremental track and the at least one absolute track have poles arranged in the longitudinal direction of the measuring gauge, the poles of the at least one absolute track form at least two regions in the sensor with different field strengths or signal amplitudes.

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