Patent · US Active

Linear actuator

US10707004B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

RAPA Automotive GmbH & Co. KG · DE

Inventors

Markus Franz · Selb, DE
Werner Döhla · Gefrees, DE
Martin Virow · Oberkotzau, DE

Key dates

Filing date	Feb 14, 2018
Grant date	Jul 7, 2020
Priority date	—
Expiry date	Aug 18, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A linear actuator for an active motor mount of a motor vehicle includes a stator which has an electrically energizable coil for generating an electromagnetic field, as well as a magnetic armature which is mounted axially movable with regard to a longitudinal axis of the coil and has at least one permanent magnet ring which opposes the stator and has several permanent magnet ring segments. Between a surface of the permanent magnet ring segments which faces the stator and a surface of the stator which faces the permanent magnet ring segments there exists an angular gap with a gap angle (α) of preferably 4°.

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