Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTROMAGNETIC MOTOR WITH FLUX STABILIZATION RING, SATURATION TIPS, AND RADIATOR
Document Type and Number:
WIPO Patent Application WO2002037644
Kind Code:
A3
Abstract:
The present invention provides an electromagnetic drive motor assembly (EDMA) that has an inner flux return assembly formed form an upper pole piece and a lower pole piece oppositely disposed relative to each other along the center of the EDMA. An annularly positioned conductive ring (or flux stabilization ring) encircles the inner flux return assembly, concentrically in contact with the outside of the inner flux return assembly. Along the exterior side of the flux return pieces, is a magnet that is between a top plate and a bottom plate. Each plate contacts with the magnet to form a magnetically conductive system. A magnetic gap is formed in between the inner flux return assembly and the top and bottom plates. Disposed within the magnetic gap is a dual coil wound around a cylinder. The dual coil includes a first coil portion and a second coil portion. To minimize the modulation, the top and bottom plates may be saturated and plate tips may be provided near the magnetic gap. And to dissipate heat away from the magnetic gap, a thermal radiating conductive ring may be provided as well.

More Like This:
WO/2005/086327DEVICE FOR ADJUSTING THE ARMATURE STOKE IN A REVERSIBLE LINEAR DRIVE UNIT
JPS60111384[Title of the device] Semiconductor linear motor
JPS5959064MOVABLE MAGNET TYPE BRUSHLESS LINEAR MOTOR
Inventors:
MORO JERRY (US)
BUTTON DOUGLAS J (US)
Application Number:
PCT/US2001/045453
Publication Date:
March 27, 2003
Filing Date:
October 23, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HARMAN INT IND (US)
MORO JERRY (US)
BUTTON DOUGLAS J (US)
International Classes:
H02K41/035; H04R9/02; H02K9/22; H02K16/02; (IPC1-7): H04R9/06; H04R9/02; H02K9/22
Domestic Patent References:
WO1999048329A11999-09-23
Foreign References:
FR1180456A1959-06-04
US3881074A1975-04-29
US4595801A1986-06-17
EP0486254A21992-05-20
US3127749A1964-04-07
US5717262A1998-02-10
US4933975A1990-06-12
AU542761A
US5070158A1991-12-03
Other References:
PATENT ABSTRACTS OF JAPAN vol. 018, no. 608 (E - 1633) 18 November 1994 (1994-11-18)
PATENT ABSTRACTS OF JAPAN vol. 011, no. 004 (E - 468) 7 January 1987 (1987-01-07)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: PERMANENT MAGNET ELECTRIC MACHINE HAVING REDUCED COGGING TORQUE

Next Patent: SMALL-SIZED MOTOR