| Patents for H02K 23 - Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors (6,220) |
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| 07/11/1989 | US4847526 Variant-pole electric motor |
| 07/11/1989 | US4847513 Power-operated device with a cooling facility |
| 07/11/1989 | US4845837 Method of making permanent magnet assembly |
| 07/05/1989 | EP0322832A1 Universal electric motor |
| 07/04/1989 | US4845398 Armature stator configuration for compound interaction/induction electric rotating machine |
| 06/29/1989 | DE3743289A1 Motor vehicle drive with automatic infinitely variably controlled torque transducer |
| 06/27/1989 | US4843270 Electrical machine with unequal pole faces |
| 06/07/1989 | CN2039080U Adjustment of motor brush pressure |
| 05/31/1989 | EP0317580A1 Electric motor, in particular a drive motor for a drum pump or submersible pump. |
| 05/24/1989 | EP0316858A2 Novel flexible magnet for use in small DC motors and apparatus for making the same |
| 05/24/1989 | CN2038297U Fuel actuator motor |
| 05/23/1989 | US4833357 Rotor for miniature motors |
| 05/23/1989 | CA1254608A1 D. c. motor |
| 05/09/1989 | US4829254 Electric motor with velocity indicating device |
| 05/09/1989 | US4829208 Flat motor having a rotatable shaft, a stepped portion formed in said shaft, and apparatus for producing same |
| 05/03/1989 | EP0314054A1 D.C. machine with permanent magnetic stator |
| 05/02/1989 | US4827175 Flat motor with simplified detector rotor mounting |
| 05/02/1989 | US4827173 Commutator motor, especially a small motor for motor vehicles |
| 05/02/1989 | US4827167 Miniature motor |
| 05/02/1989 | CA1253558A1 Electromagnetic servo unit |
| 04/26/1989 | CN2036723U Ac-dc flat-type specialized micromotor |
| 04/26/1989 | CN2036722U Wheel type driving motor for lightweight electric powered vehicles |
| 04/25/1989 | CA1253188A1 Axial-flow fan |
| 04/19/1989 | EP0312398A1 Fuel pump motor |
| 04/19/1989 | EP0312290A2 Permanent magnet rotary dynamo electric machines |
| 04/19/1989 | CN2036331U Electric brush apparatus for motor |
| 04/19/1989 | CN2036330U Electric motor commutator |
| 04/19/1989 | CN1032472A Brush device of d.c. electrical machine |
| 04/18/1989 | US4823039 Electrical machines |
| 04/18/1989 | US4823037 DC Electric motor having field poles of permanent magnet |
| 04/18/1989 | US4823035 Electric motor with locking apparatus |
| 04/18/1989 | US4823033 Miniature motor having coated rubber permanent magnet |
| 04/12/1989 | EP0311395A1 Flat motor |
| 04/12/1989 | CN2035929U Laminated stator of motor |
| 04/11/1989 | US4820948 Electric motor |
| 04/06/1989 | DE3731409A1 Electric motor, especially a small electric motor |
| 04/05/1989 | EP0309853A1 Optical pulse generator for an electrical motor drive arrangement |
| 03/30/1989 | DE3731079A1 Elektrohandwerkzeug mit einem universalmotor mit rechts- und linkslauf Electric hand tool with a universal motor with right and left running |
| 03/30/1989 | DE3730615A1 Elektrische maschine mit permanentmagnet-erregung Electrical machine with permanent magnet excitation- |
| 03/29/1989 | EP0309076A2 Commutation in electric motors |
| 03/28/1989 | US4816712 Thrust compensation for flat-commutator starter |
| 03/23/1989 | WO1989002671A1 A motor or alternator |
| 03/23/1989 | WO1989002668A1 Electric machine energized by permanent magnets |
| 03/23/1989 | DE3729680A1 Series wound permanent-magnet motor |
| 03/22/1989 | EP0307709A1 Device for detecting the rotation and/or for measuring the rotation speed of a small DC motor with permanent or electro-magnets |
| 03/21/1989 | US4814654 Stator or rotor based on permanent magnet segments |
| 03/15/1989 | EP0306486A1 Stator for an electrical machine. |
| 03/14/1989 | US4812693 Solderless connection for an electric motor |
| 03/09/1989 | WO1989002183A1 Rotor structure of synchronous motor |
| 02/16/1989 | DE3724835A1 Electrical power generator having two contrarotating rotors |
| 02/09/1989 | WO1989001257A1 Stator end member and method of asssemblying on stator |
| 02/08/1989 | CN2032373U Tunnel type motor |
| 01/17/1989 | US4798999 Numerically controlled electromechanical precision drive system |
| 01/12/1989 | DE3721415A1 Electrical tool |
| 01/11/1989 | EP0298403A2 Drive motor |
| 01/10/1989 | US4797592 Dynamo electric machine with upwardly shifted ripple frequency |
| 01/04/1989 | CN2030393U Permanent-magnetic-disc type dc motor rotor |
| 01/04/1989 | CN1030165A Miniature motor |
| 01/03/1989 | CA1248164A1 Brush bearing sub-assembly for electric motor |
| 12/27/1988 | US4794291 Permanent magnet field DC machine |
| 12/22/1988 | DE3719777A1 Drive, especially for wiper systems on motor vehicles |
| 12/21/1988 | CN87103926A General-purpose type stepping and direct-current interchangeable motor |
| 12/13/1988 | CA1246652A1 Electric motor for driving elements in two opposite directions with a higher resisting force in one direction |
| 12/08/1988 | DE3813999A1 Kollektormaschine Collector machine |
| 11/24/1988 | DE3723369C1 Permanent-magnet-excited DC machine |
| 11/24/1988 | DE3715123A1 Hollow-rotor (bell-shaped rotor) electric motor |
| 11/24/1988 | DE3714758A1 Miniature electric motor, in particular for miniature models of railway tractive units, operated with direct current |
| 11/23/1988 | CN88204020U Direct current rare earth permanent magnet tracting motor |
| 11/17/1988 | WO1988009077A1 Electric motor, in particular a drive motor for a drum pump or submersible pump |
| 11/17/1988 | DE3815427A1 Electric motor, especially a drive motor for a barrel pump or container pump |
| 11/10/1988 | DE3704780A1 System of improvements for electrical machines having an air-cored bell-type armature |
| 11/10/1988 | DE3703523C1 Electrical power supply device for cycles |
| 11/09/1988 | CN88200148U Stator magnetic field rotating dc motor |
| 11/01/1988 | US4782254 Direct-current dynamo electric machine, and method of manufacture |
| 10/18/1988 | US4778354 Motor type fuel pump |
| 10/18/1988 | US4777717 Method for manufacturing a magnet-type motor yoke assembly |
| 10/06/1988 | WO1988007782A1 Electric generator |
| 09/28/1988 | EP0284373A2 Terminal in an electric motor |
| 09/27/1988 | US4774426 Commutator machine having a permanent magnet stator |
| 09/21/1988 | EP0282477A1 Electrical machine, in particular for starting systems of internal combustion engines. |
| 09/14/1988 | EP0282377A1 Electric motor gear unit, and method of assembling it |
| 09/14/1988 | CN88101109A Rotor for miniature motors |
| 09/14/1988 | CN88101107A Miniature motor |
| 09/14/1988 | CN88100872A Miniature motor |
| 09/14/1988 | CN87215879U Super with dc permanent magnetic motor |
| 09/07/1988 | WO1988006815A1 Brush device |
| 09/07/1988 | CN88201930U Superconducting excitation motor |
| 09/06/1988 | US4769572 Electrical appliance for personal use |
| 09/06/1988 | US4769566 Shallow cup-shaped miniature motor |
| 09/06/1988 | CA1241683A1 Sub-assembly for electric motor including reversing switch |
| 09/01/1988 | DE3806033A1 Device for fastening magnet poles |
| 08/31/1988 | EP0279809A1 D.c. generator. |
| 08/16/1988 | US4764700 Armature including integral cooling means |
| 08/10/1988 | EP0277431A1 Two-speed motor |
| 08/09/1988 | US4763037 Flat motor having a stationary magnet |
| 08/03/1988 | CN87204284U Automatic commutating micro dc motor |
| 07/26/1988 | US4760318 Intermittent single rotation motor actuator |
| 07/13/1988 | EP0274361A2 An electrically operated, electronically controlled power amplifier |
| 07/12/1988 | US4756075 Method and apparatus for manufacturing a preform for a flat coil dynamoelectric device |
| 07/05/1988 | CA1238934A1 Sub-assembly for electric motor with stator terminal connection means |