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Title:
ELECTROMAGNETIC ACTUATOR HAVING IMPROVED FORCE DENSITY, AND USE THEREOF FOR AN ELECTRIC RAZOR
Document Type and Number:
WIPO Patent Application WO/2012/114042
Kind Code:
A3
Abstract:
The invention relates to an electromagnetic actuator including a stator unit (2) having N poles having the width LP, and at least one coil (3) surrounding one of said poles (7b), wherein N≤3, and a magnetic portion (8), which is movable, relative to the stator unit (2), in a direction of relative movement and over a course of travel C, and including N+1 magnetized areas (4a, 4b, 5a, 5b), the magnetizations of which are perpendicular to the relative movement direction and in alternate directions. According to the invention, the magnetic portion (8) comprises a yoke (6) for closing off the magnetic fluxes passing through the magnetized areas, the course of travel C of the magnetic portion (8) being less than or equal to the width LP of each pole, and the thickness of the magnetized areas perpendicular to the direction of movement being less than the course of travel C of the magnetic portion (8).

Inventors:
ARLOT, Richard (1 rue Beauregard, Bonnevent Velloreille, Bonnevent Velloreille, F-70700, FR)
LOUSSERT, Guillaume (52 rue Jeanne-Antide Thouret, Besançon, Besançon, F-25000, FR)
Application Number:
FR2012/050373
Publication Date:
July 18, 2013
Filing Date:
February 22, 2012
Export Citation:
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Assignee:
MOVING MAGNET TECHNOLOGIES (1 rue Christiaan Huygens, ZAC Lafayette, Besançon, F-25000, FR)
ARLOT, Richard (1 rue Beauregard, Bonnevent Velloreille, Bonnevent Velloreille, F-70700, FR)
LOUSSERT, Guillaume (52 rue Jeanne-Antide Thouret, Besançon, Besançon, F-25000, FR)
International Classes:
H02K33/16; B26B19/00
Domestic Patent References:
WO2004028759A12004-04-08
WO2009119450A12009-10-01
Foreign References:
US20020055695A12002-05-09
DE102005044176A12007-03-29
EP1005714A12000-06-07
Other References:
See also references of EP 2678924A2
Attorney, Agent or Firm:
BREESE, Pierre (32 place Ronde, Paris La Défense Cedex, F-92035, FR)
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