Patent · US Active

Sensor system including a magnetized shaft

US8191431B2 · kind B2 · utility

14Cited by

18References

20Claims

0Family size

Assignee

Stoneridge Control Devices, Inc. · US

Inventors

Kayvan Hedayat · Weston, US
Norman Poirier · Raynham, US

Key dates

Filing date	Jul 12, 2011
Grant date	Jun 5, 2012
Priority date	—
Expiry date	Jul 12, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01L3/104
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor includes a shaft and a magnetic sensor and an anti-aging magnetic sensor. The shaft may have at least one magnetized active region. The magnetic sensor may be configured to sense a magnetic field about the shaft, and may provide an output representative of torque applied to the shaft, shaft rotational speed and/or shaft rotational position. The anti-aging magnetic sensor may be positioned adjacent the active region to provide a reference signal output that is substantially independent of torque applied to said shaft.

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