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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10284068 B1

PDFFull Text
Date of Patent:
May. 07, 2019

Filed:

Feb. 10, 2014

Linear actuator

Applicant:

Rausch & Pausch Gmbh, Selb, DE;

Inventors:

Rocco Kemnitz, Bobenneukirchen, DE;

Werner Döhla, Gefrees, DE;

Julius Hudec, As, CZ;

Jakob Haas, Selb, DE;

Assignee:

Rausch & Pausch GmbH, Selb, DE;

Attorney:

Maier & Maier, PLLC

Primary Examiner:

Bernard Rojas

Assistant Examiner:

Rashad H Johnson

Int. Cl.
CPC ...
H02K 41/02 (2006.01); H02K 33/16 (2006.01); H02K 1/30 (2006.01); F16C 32/04 (2006.01); B60K 5/12 (2006.01); H01F 7/16 (2006.01); F16F 13/26 (2006.01); F16F 13/00 (2006.01); F16F 13/14 (2006.01); F16F 5/00 (2006.01); H01F 7/08 (2006.01);
U.S. Cl.
CPC ...
H02K 41/02 (2013.01); B60K 5/1283 (2013.01); F16C 32/0472 (2013.01); H01F 7/1607 (2013.01); H02K 1/30 (2013.01); H02K 33/16 (2013.01); F16C 32/0468 (2013.01); F16F 5/00 (2013.01); F16F 13/00 (2013.01); F16F 13/149 (2013.01); F16F 13/26 (2013.01); H01F 2007/086 (2013.01);
Abstract

A linear actuator for an active engine mount of a vehicle has a stator with a coil that can be fed with electric current for generating an electromagnetic field and an actuating element that is mounted in axially movable fashion with reference to the stator. The actuating element comprises an armature and a ram extending in axial direction and is so mounted in the stator by means of at least one spring element that it can be moved axially in frictionless fashion when the coil is fed with current. The actuating element comprises a support element of a non-magnetic light-weight construction material extending in radial direction between the armature and the ram. Advantageously, the armature is provided only in such regions where there run magnetically relevant field lines of the electromagnetic field of the coil.

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