| Patents for H02K 23 - Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors (6,220) |
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| 08/26/1980 | US4219739 Starter motor-alternator apparatus |
| 08/12/1980 | US4217538 Regulated permanent magnet D.C. power supply |
| 08/12/1980 | US4217513 Direct current motor |
| 08/12/1980 | US4216571 Methods and apparatus for inserting winding end turn phase insulation |
| 08/05/1980 | US4216400 Permanent magnet electrical machines |
| 08/05/1980 | CA1083213A1 Radial planar commutator for d.c. machines |
| 07/24/1980 | WO1980001524A1 Stator for multi rotor d.c.magnetic motor |
| 07/15/1980 | US4213069 Electric motor |
| 07/01/1980 | CA1080776A1 Brush arrangement for multiple disc machines |
| 06/24/1980 | US4209724 Permanent magnet stator frame structure for an electric motor |
| 06/24/1980 | US4209720 Electric motors supplied with chopped current |
| 06/24/1980 | US4208784 Method for placing and securing magnets in a motor housing |
| 06/17/1980 | US4208601 Distributor for electric D.C. machine |
| 06/03/1980 | CA1078908A1 Counter-rotation electric motor |
| 05/27/1980 | CA1078445A1 Rotor for permanent magnet coreless motor |
| 05/13/1980 | US4203048 Coil support for disc rotor of coreless motor |
| 05/06/1980 | US4200971 Method of manufacturing cup-shaped coil assembly of electric motors |
| 04/29/1980 | CA1076633A1 Direct current motor with interpoles insulated from the yoke |
| 04/08/1980 | US4197475 Direct current motor with double layer armature windings |
| 03/25/1980 | US4194743 Record player |
| 03/19/1980 | EP0008730A1 Method of assembling electric motors, in particular printed motors, and motors assembled thereby |
| 03/18/1980 | US4193184 Method of manufacturing a stator for an electrical machine |
| 02/20/1980 | EP0008049A1 DC micromotor for driving a dental tool |
| 02/19/1980 | CA1071850A1 Permanent magnet d.c. dynamoelectric machine and method of making same |
| 02/12/1980 | US4188556 Electro-mechanical machine |
| 01/22/1980 | US4185216 Circumferentially-segmented magnet homopolar dynamoelectric machine |
| 01/22/1980 | CA1070366A1 Permanent magnetic motor for vehicle door window |
| 01/01/1980 | US4181875 Drive circuit for a DC motor |
| 01/01/1980 | US4181866 Permanent magnet with reduced thickness at the pole areas for small size d-c motors |
| 11/13/1979 | US4174484 Motor with a disk rotor |
| 11/13/1979 | US4173901 Ball joint and pole assembly for starter motor |
| 10/09/1979 | US4170276 Motor with selectable speed clutch |
| 07/31/1979 | US4163165 Permanent magnet motor |
| 06/19/1979 | CA1056903A1 Compound dc electrical motor with shunt field demagnetization protection |
| 06/12/1979 | CA1056430A1 Miniature electric motors and method of manufacturing rotors for the same |
| 05/15/1979 | US4155021 Segmental permanent-magnet stator magnet |
| 05/08/1979 | CA1054237A1 Speed detector for use with miniature dc motor |
| 05/01/1979 | US4151964 Apparatus and method for manufacture of bell-shaped armatures |
| 04/17/1979 | US4150312 Permanent magnet stator D.C. dynamoelectric machine |
| 04/10/1979 | CA1052434A1 Direct current dynamoelectric machine commutating pole assembly |
| 03/27/1979 | CA1051494A1 Electric motor designed for automated assembly |
| 03/13/1979 | US4143606 Multiple armature permanent magnet motor/actuator for sewing machine drive and stitch control |
| 03/06/1979 | US4143288 Coreless motor |
| 02/27/1979 | US4142138 Motor control |
| 02/27/1979 | US4141137 Method of making a permanent magnet field pole for a direct current dynamoelectric machine |
| 02/20/1979 | US4140935 D-C dynamo electric machine |
| 02/06/1979 | US4138642 Method and arrangement for indirectly ascertaining the rotary speed of a permanent-magnet-stator D.C. motor |
| 02/06/1979 | US4138629 Field compensated motor/generator |
| 01/23/1979 | US4136294 Direct-current micromotor |
| 01/02/1979 | US4131989 Method of manufacturing an electric motor |
| 12/05/1978 | CA1043842A1 Electric shavers |
| 11/28/1978 | US4127785 Miniature motor |
| 11/14/1978 | US4125791 Stator for an electrical machine |
| 10/10/1978 | CA1040263A1 Method and apparatus for testing dc motors |
| 09/26/1978 | US4117363 Dc motor |
| 09/12/1978 | US4114057 Dynamoelectric machine with inner and outer stators |
| 09/05/1978 | US4112340 Control devices |
| 09/05/1978 | US4112320 Anisotropic magnet structure, particularly segmental magnet structure for permanent magnet dynamo electric machines |
| 09/05/1978 | US4110901 Method of fabricating rotor coil for coreless motors |
| 08/29/1978 | US4110718 Magnetic structure, particularly permanent magnet for motor fields, and method |
| 08/29/1978 | US4110676 Dynamoelectric machine and tachometer |
| 08/29/1978 | US4110649 Variable speed DC motor |
| 08/29/1978 | US4110645 Electric motor |
| 08/29/1978 | CA1037538A1 Brush arrangement for a permanent magnet coreles motor |
| 08/22/1978 | US4109170 Electric motor having frequency generator |
| 08/22/1978 | US4108015 Full torque differential system |
| 08/15/1978 | US4107587 Three-phase DC motor having non-superimposed armature coils |
| 07/25/1978 | US4103196 Coreless motor |
| 07/11/1978 | USRE29695 Outboard motor with speed regulator for DC permanent magnet motor |
| 07/04/1978 | US4099077 Rotor for coreless motor |
| 06/13/1978 | US4095155 Direction reversing direct current motors and their control |
| 06/06/1978 | US4093882 Coreless motor |
| 05/30/1978 | US4092569 Multiple armature permanent magnet motor/actuators |
| 05/23/1978 | US4091300 Permanent magnet electrical machines |
| 05/09/1978 | US4088177 Permanent magnet D.C. dynamoelectric machine and method of making same |
| 04/04/1978 | US4082971 Printed motor |
| 04/04/1978 | US4082970 Direct-current motor-generator |
| 04/04/1978 | US4082968 Speed detector for use on a dc motor |
| 03/21/1978 | US4080556 Compound D.C. electrical motor with shunt field demagnetization protection |
| 03/21/1978 | US4080544 Electric motor |
| 03/21/1978 | US4080542 High density flux magnetic circuit |
| 03/14/1978 | US4079300 Tape deck |
| 03/14/1978 | US4079278 Hybrid field permanent magnet motor |
| 03/14/1978 | US4079277 Flat miniature dynamoelectric machine |
| 02/28/1978 | US4076561 Method of making a laminated rare earth metal-cobalt permanent magnet body |
| 02/28/1978 | US4075970 Speed selection for a direct current permanent magnet motor |
| 02/14/1978 | US4074159 Dynamo-electric machine |
| 01/10/1978 | US4068143 Discoidal winding for dynamoelectric machines |
| 12/27/1977 | US4065705 SCR controlled universal motor |
| 11/29/1977 | US4060746 Electric direct current rotating machine |
| 11/01/1977 | US4056746 Counterrotation electric motor |
| 09/27/1977 | US4051402 Shell rotor direct current generator |
| 09/20/1977 | US4049984 Electric motor |
| 08/09/1977 | US4041338 Direct current dynamoelectric machine commutating pole assembly |
| 08/02/1977 | US4039876 Improved supporting arrangement for hollow cylindrical armature winding |
| 08/02/1977 | US4039853 Magnetizing device for permanent magnet motor for electric vehicle |
| 05/24/1977 | US4025808 Commutating machine with integral speed control |
| 05/10/1977 | US4023057 Electric motor field magnets |
| 05/03/1977 | US4021692 Peripheral commutator for discoidal armature |
| 04/26/1977 | US4020372 Cooling of discoidal dynamoelectric machines |