Patent · US Expired

Control-valve drive with sensor unit for detecting the position of the valve

US6752171B1 · kind B1 · utility

11Cited by

16References

24Claims

0Family size

Assignee

SAMSON AKTIENGESELLSCHAFT · DE

Inventors

Lothar Kemmler · Mörfelden, DE
Stefan Kolbenschlag · Darmstadt, DE
Walter Schneider · Schriesheim, DE

Key dates

Filing date	Feb 19, 2002
Grant date	Jun 22, 2004
Priority date	—
Expiry date	Jun 19, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8242
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A drive for a control valve has a drive force unit, a yoke for connecting to a valve in a fixed manner, a drive spindle for transmitting the movement of the drive force unit to the valve and a sensor unit for detecting the position of the valve. The sensor unit includes a magnetic track with a reoccurring structure which is integrated into the drive spindle, a sensor which is connected to the yoke of the drive in the vicinity of the magnetic track, which is suitable for detecting the changing magnetic field lines and at least one permanent magnet in the area of the magnetic track and the sensor, whose magnetic field lines penetrate both the magnetic track and the sensor.

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