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.:
Date of Patent:
Oct. 18, 2016
Filed:
Dec. 06, 2013
Applicant:
Johnson Electric S.a., Murten, CH;
Inventors:
Assignee:
JOHNSON ELECTRIC S.A., Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/06 (2006.01); H02K 7/08 (2006.01); H02K 5/16 (2006.01);
U.S. Cl.
CPC ...
H02K 7/08 (2013.01); H02K 5/161 (2013.01); H02K 7/06 (2013.01); H02K 7/088 (2013.01); H02K 2205/03 (2013.01);
Abstract
A linear actuator has a stator with two stator coils and pole plates forming stator poles. A rotor is rotatably mounted to interact with the stator poles. The rotor has a hollow cup shaped permanent magnet fitted to a screw shaft. An output shaft, which is co-axial with the rotor, is driven by the rotor through a screw connection. The rotor is supported by a single rotary bearing located within the magnet, axially between axial ends of the permanent magnet.