| Patents for H02K 23 - Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors (6,220) |
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| 06/06/1991 | DE3939738A1 Electric motor with fan for motor vehicle cooling - has electronic control unit fitted with spacers around bolts to end of casing remote from fan |
| 06/05/1991 | EP0429729A1 Electric machines with ironcore disk armatures |
| 06/05/1991 | CN2078503U Nd-fe-b permanent-magnet d.c. motor |
| 05/14/1991 | US5015905 DC dynamoelectric machine with interpoles having magnetic flux bypassing members |
| 05/14/1991 | US5015904 Stator for an electrical machine |
| 05/14/1991 | US5015896 Terminal arrangement for an electric motor |
| 05/07/1991 | US5013952 Precision brush mounting assembly for small electric motor |
| 05/07/1991 | US5013946 Miniature motor with a frequency generator |
| 05/02/1991 | WO1991006146A2 Improved motors and methods of making the same |
| 05/02/1991 | DE3935594A1 Dc motor RPM measuring and evaluating circuitry - contains partial rotation measurer connected to motor controller via evaluation circuit ascertaining motor drive displacement in vehicle |
| 04/23/1991 | US5010266 Anti-clogging offset for rotor of synchronous motor |
| 04/16/1991 | US5008578 Permanent magnet motor having diverting magnets |
| 04/16/1991 | US5008576 Magnetizing type induction motor |
| 04/16/1991 | US5008574 Direct current motor assembly with rectifier module |
| 04/11/1991 | DE4019894A1 Hand held electric power tool with pistol grip handle - has motor and main weight concentrated in handle with short tool spindle for improved location and drive control via geared transmission |
| 04/10/1991 | CN2074951U Starting generating two-purpose electric motor |
| 04/09/1991 | US5006765 DC motor with coreless coil installation |
| 04/09/1991 | US5006742 Splashproof cover for an electric motor |
| 04/03/1991 | CN2074515U Permanent-magnet disk motor with non-uniform distribution magnetic circuit |
| 04/02/1991 | US5004944 Lightweight high power electromagnetic transducer |
| 03/27/1991 | EP0419293A1 Armature coil arrangement for an engine starter motor |
| 03/27/1991 | CN2074077U High-power disk type nd-fe-b permanent-magnet direct-current machine |
| 03/21/1991 | WO1991003866A1 Commutator motor |
| 03/21/1991 | WO1991003856A1 Electric motor, in particular small-size electric motor for driving windscreen wipers in motor vehicles |
| 03/19/1991 | US5001375 D. C. electric motor |
| 03/19/1991 | US5000524 Motor-driven anti-lock brake system having auxiliary field winding |
| 03/14/1991 | DE4027176A1 Submersible electric fuel pump - has independent brush spring fixing plate to assist final assembly of connection end |
| 03/13/1991 | EP0416704A1 Method of connecting a conductor wire to a hook-shaped element, and rotor and/or stator for an electrical machine in which the method is used |
| 03/13/1991 | EP0211000B1 Numerically-controlled electromechanical precision drive system |
| 03/13/1991 | CN2073189U Electric motor of bicycle |
| 03/07/1991 | WO1991003095A1 Electric motor with watertight construction |
| 03/07/1991 | DE3928895A1 DC compact controller for speed-regulated conveyor belt - operates in hazardous atmos. on unidirectional or reversible conveyor with speed adjustment governed by loading data |
| 03/06/1991 | EP0415493A1 Method for winding an armature body of an armature, and electric machine provided with an armature produced by the method |
| 03/06/1991 | CN2072743U Miniature disk motor |
| 03/02/1991 | WO1991003385A1 Motor-wheel for a vehicle |
| 03/02/1991 | CA2039709A1 Independent-drive wheel for a wheel-mounted vehicle |
| 02/27/1991 | EP0413849A1 Rotation detection device for a commutator motor excited by permanent magnets or protruding poles |
| 02/27/1991 | EP0279809B1 D.c. generator |
| 02/26/1991 | US4996456 Axial retainers for coated electromagnetic rotor |
| 02/26/1991 | US4995658 Door locking devices |
| 02/21/1991 | DE4025713A1 Stromwendermotor Commutator |
| 02/05/1991 | US4990811 Brush holding structure for motor |
| 01/30/1991 | EP0410127A1 Electrical machine as D.C. tachometer generator |
| 01/29/1991 | US4987791 Miniature motor with a worm reduction gear |
| 01/24/1991 | DE4004464A1 Compact electric hand tool |
| 01/24/1991 | DE4004463A1 Switching device for range of modular electric hand tools - has internal of external manually controlled ring for operating interior switch plate and brush angle for reversing motor |
| 01/23/1991 | EP0408988A2 Universal electric motor |
| 01/23/1991 | EP0408987A2 Electric tool |
| 01/23/1991 | EP0408986A2 Switch device for electrical change-over switching of electric tools |
| 01/23/1991 | EP0408985A2 Hand held electric tool |
| 01/16/1991 | EP0282477B1 Electrical machine, in particular for starting systems of internal combustion engines |
| 01/10/1991 | WO1991000639A1 Generator set |
| 01/08/1991 | US4983872 Brush gear for a permanent magnet motor |
| 01/08/1991 | US4983866 Encapsulated armature for electric motor |
| 01/03/1991 | DE4020176A1 Generating unit for current supply pref. for vehicle - has RPM regulated IC engine designed as air or liquid cooled radial engine with fan impeller fitted at rotor of current generator |
| 01/02/1991 | EP0405173A2 Motor-operated pump of intank type |
| 01/01/1991 | US4982130 Electric motor with a stator and a rotor made from laminated layers of plates |
| 12/26/1990 | CN1048130A Power motor for bicycle |
| 12/25/1990 | US4980593 Direct current dynamoelectric machines utilizing high-strength permanent magnets |
| 12/18/1990 | US4978877 Mounting device for brushes in a reversible commutator motor |
| 12/12/1990 | EP0402008A1 Improvement of series excitation motor (1) |
| 12/12/1990 | EP0401287A1 Power-operated device with a cooling facility. |
| 12/04/1990 | US4975612 Commutator with armature winding connections |
| 11/27/1990 | US4973873 Electric machine |
| 11/22/1990 | EP0398610A2 Brush holder for an electric motor |
| 11/22/1990 | EP0398609A1 Universal motor with secondary winding |
| 11/22/1990 | EP0397973A2 Brush holding structure for motor |
| 11/15/1990 | CA2015139A1 Brush holder for an electric motor |
| 11/15/1990 | CA2015138A1 Universal motor with secondary winding |
| 11/14/1990 | CN1047002A Miniature motor |
| 11/07/1990 | CN2065375U Permanent-magnet dc disc micromotor |
| 10/31/1990 | EP0395515A1 A brush arrangement for DC motor |
| 10/31/1990 | EP0307709B1 Device for detecting the rotation and/or for measuring the rotation speed of a small dc motor with permanent or electro-magnets |
| 10/31/1990 | CN2064958U Shunt-excited type d.c. motor with outer rotor for vehicle |
| 10/25/1990 | DE3913276A1 DC miniature motor with permanent magnet excitation - increases radial magnetic field direction in pole centre and energy density in magnet part |
| 10/24/1990 | CN1010160B Miniature motor |
| 10/24/1990 | CN1010157B Brush device of dc electrical machine |
| 10/24/1990 | CN1010156B Miniature motor |
| 10/16/1990 | US4963779 Brush holder for an electric motor |
| 10/16/1990 | US4962583 Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means |
| 10/10/1990 | EP0390927A1 Rotary machine |
| 09/20/1990 | WO1990010974A1 An actuator device for an electric window winder |
| 09/19/1990 | EP0387666A1 Armature of a rotary electric machine with a commutator, method of producing the same and a conductor for the armature coil |
| 09/12/1990 | EP0386287A1 D.C. machine with main and commutating poles |
| 09/12/1990 | CN2062128U Bearing device for motor |
| 09/11/1990 | CA1273980A1 Electrical machine with unequal pole faces |
| 09/05/1990 | EP0385333A1 Direct current dynamoelectric machine |
| 09/04/1990 | US4953284 Method for retaining a magnet within a motor assembly |
| 08/29/1990 | EP0384686A1 Small-sized electric motor |
| 08/23/1990 | DE3905013A1 Small electric motor |
| 08/23/1990 | DE3904785A1 Power-driven hand tool |
| 08/16/1990 | DE4003831A1 Stabilisation of magnetic flux in magnetic motor |
| 08/16/1990 | DE3915526A1 Duplex-form electric motor or generator - has hollow rotor with internal stator coil and external stator coil |
| 08/14/1990 | US4949023 Direct current machine with switchable stator windings |
| 08/14/1990 | US4948998 Electric motor |
| 08/02/1990 | DE4001273A1 Small motor for tape recorder - has frequency generator with cylindrical section in contact with circumferential surface of housing to detect RPM |
| 07/12/1990 | DE3943264A1 Electric machine commutator arrangement - leads end of armature coils of wave winding through slots in direction opposing direction of winding |
| 07/03/1990 | US4939399 Series-wound electrical rotating field machine having integrated radial loop coils and drum coils |
| 07/03/1990 | US4939398 Laminated assemblies with in situ molded magnets |
| 06/27/1990 | EP0374454A1 Method and equipment for manufacturing an electric motor, especially a disk motor |