Patent · US Active

Actuator device

US9812632B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

ETO MAGNETIC GMBH · DE

Inventors

Markus Laufenberg · Stockach, DE
Thomas Schiepp · Seitingen-Oberflacht, DE

Key dates

Filing date	May 31, 2013
Grant date	Nov 7, 2017
Priority date	—
Expiry date	Mar 13, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH10N35/80
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An actuator device having an expansion unit (10), which comprises a magnetically active shape memory alloy material (12) and which carries out an expansion movement from a starting position along an expansion direction as a reaction to an energization of a coil device (30) and interacts with restoring means which exert on the expansion unit (10) a restoring force opposite to the expansion direction, wherein the restoring force has permanent magnets which act or are seated on a section of the expansion unit (10) such that the restoring force generated magnetically by the permanent magnets changes with increasing expansion stroke in the expansion direction, wherein the permanent magnets (16, 34, 40, 52, 54) are embodied and/or designed such that the expansion unit (10) can contract into the starting position along the expansion stroke when the coil device (30) is not energized.

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