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Class Information
Number: 310/154.28
Name: Electrical generator or motor structure > Dynamoelectric > Rotary > Permanent magnet machines > Permanent magnet stator > Specific magnetization
Description: Subject matter including a specific magnetization pattern in at least one permanent magnet on the stator.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7554225 |
Electric motor with a coil arrangement for providing oscillatory linear and rotational movement |
Jun. 30, 2009 |
| 7235909 |
Electromagnetic motor/generator |
Jun. 26, 2007 |
| 6987340 |
DC motor with brushes |
Jan. 17, 2006 |
| 6943464 |
Lithographic apparatus and motor for use in the apparatus |
Sep. 13, 2005 |
| 6838797 |
Flux ring for an electric motor |
Jan. 4, 2005 |
| 6806607 |
Electric motor |
Oct. 19, 2004 |
| 6720697 |
Direct-current motor |
Apr. 13, 2004 |
| 6717296 |
Lithographic apparatus and motor for use in the apparatus |
Apr. 6, 2004 |
| 6707213 |
Hybrid magnet type DC motor |
Mar. 16, 2004 |
| 6628030 |
Direct current motor using magnets with extensions |
Sep. 30, 2003 |
| 6580190 |
Circumferential confronting type motor |
Jun. 17, 2003 |
| 6462448 |
Flux ring for an electric motor |
Oct. 8, 2002 |
| 6020666 |
Two-pole motor |
Feb. 1, 2000 |
| 5677587 |
Small motor having drive magnet with magnetization pattern for biasing rotor shaft |
Oct. 14, 1997 |
| 5631093 |
Magnetically coded device |
May. 20, 1997 |
| 5434462 |
High-power electrical machinery |
Jul. 18, 1995 |
| 5426338 |
High-power electrical machinery with toroidal permanent magnets |
Jun. 20, 1995 |
| 5341053 |
Linear motor with permanent magnets |
Aug. 23, 1994 |
| 5317228 |
High-power electrical machinery with toroidal permanent magnets |
May. 31, 1994 |
| 5309055 |
High-power electrical machinery |
May. 3, 1994 |
| 5206556 |
Field magnet for miniature motors |
Apr. 27, 1993 |
| 5204569 |
Anisotropic magnet for rotary electric machine |
Apr. 20, 1993 |
| 5170084 |
Wide-angle arc segment magnet and brush motor containing it |
Dec. 8, 1992 |
| 5162684 |
Field magnet for miniature motors |
Nov. 10, 1992 |
| 4994702 |
Motor |
Feb. 19, 1991 |
| 4896065 |
Miniature motor |
Jan. 23, 1990 |
| 4814654 |
Stator or rotor based on permanent magnet segments |
Mar. 21, 1989 |
| 4703210 |
Miniature electric non-uniform magnetization rotating machine |
Oct. 27, 1987 |
| 4687608 |
Composite permanent magnet for magnetic excitation and method of producing the same |
Aug. 18, 1987 |
| 4445059 |
Electric motor, in particular a small motor |
Apr. 24, 1984 |
| 4438362 |
Self-starting, direct current motor with permanent magnets of varied magnetic strength |
Mar. 20, 1984 |
| 4383193 |
Field pole structure of DC motor |
May. 10, 1983 |
| 4112320 |
Anisotropic magnet structure, particularly segmental magnet structure for permanent magnet dynamo electric machines |
Sep. 5, 1978 |
| 4104787 |
Forming curved wafer thin magnets from rare earth-cobalt alloy powders |
Aug. 8, 1978 |
| 4080540 |
Low-powdered stepping motor |
Mar. 21, 1978 |
| 3999090 |
Stepper motor |
Dec. 21, 1976 |
| 3939371 |
Rotary electric machine |
Feb. 17, 1976 |
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