Electromagnetic driving device with a movable permanent magnet

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5942832
SERIAL NO

09094532

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A movable member of the present driving device comprises a magnetized part, or more than one magnetized parts having all the same direction of magnetization, which is perpendicular to the direction of movement. Each magnetized part is moving in at least two air-gaps of a closed magnetic circuit coupled with en energizing coil. The material of the magnetized parts has a linear demagnetization characteristic up to temperatures at least equal to 100.degree. C. and at least up to a negative value of the flux density equal, in absolute value, to 0.5 times the remanence of the magnetic material. The driving device is dimensioned so that the mean operating point of each magnetized part lies at a flux density value smaller than 0.5 times the value of the remanence of the magnetic material used. The volume of magnetic material can be substantially reduced for a given force or torque to be delivered.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
MMT SABESANCON14

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Oudet, Claude Besan.cedilla.on, FR 44 786

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PORTESCAP (1)
* 5053667 Di- or polyphase synchronous electric motor with a disc-shaped rotor 8 1990
 
MOVING MAGNET TECHNOLOGIES (3)
* 5298825 Single phase electro-magnetic actuator with low obstruction 24 1991
* 5334893 Monophase electromagnetic rotary actuator of travel between 60 and 120 degrees 47 1993
* 5512871 Rotatable single-phase electromagnetic actuator 15 1994
 
K. Ernst Brinkmann, Industrieverwaltung (1)
* 4910422 Electromagnetic device with low remanence 4 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Power Works, Inc. (1)
6323576 Electric power generator having rotor magnets and stator faces similarly shaped 26 2000
 
ROCKWELL COLLINS, INC. (5)
6320284 Motor assembly allowing output in multiple degrees of freedom 20 1999
6664666 Motor assembly allowing output in multiple degrees of freedom 21 2001
6909205 Motor assembly allowing output in multiple degrees of freedom 22 2003
* 2004/0124,717 Motor assembly allowing output in multiple degrees of freedom 2 2003
* 2008/0284,257 DIRECT DRIVE CONTROLLER WITH HAPTIC FEEDBACK 2 2008
 
MOVING MAGNET TECHNOLOGIES (1)
* 6313553 Rotating electromagnetic actuator comprising at least one magnet embedded in ferromagnetic material 8 1999
* Cited By Examiner