Patent · US Expired

Reversing linear drive comprising means for detecting an armature position

US7631438B2 · kind B2 · utility

0Cited by

9References

13Claims

0Family size

Assignee

BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

Mario Bechtold · Hemhofen, DE
Stefan Nunninger · Erlangen, DE
Johannes Reinschke · Koblenzer Straße, DE

Key dates

Filing date	Mar 3, 2005
Grant date	Dec 15, 2009
Priority date	—
Expiry date	Feb 25, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH02K41/031
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A reversing linear drive which comprises a field coil and a magnetic armature that is excited by the magnetic field of the field coil to perform a linear, axially oscillating movement. In order to detect the armature position, the drive is provided with a stripe pattern element with an alternating arrangement of transparent and opaque stripes or of light-reflecting stripes and non-light-reflecting stripes which extends at least across the entire axial armature stroke, and with a light barrier with elements that emit and receive light in a direction perpendicular to the axial direction.

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