Patents for H02K 23 - Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors (6,220) |
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06/23/1988 | DE3741919A1 DC permanent-magnet motor having armature reaction and brush displacement with respect to the armature rotation direction |
06/22/1988 | EP0271714A2 Electric motor with a commutation device to reverse the rotation |
06/21/1988 | CA1238357A1 Switch limit assembly |
06/16/1988 | WO1988004490A1 Armature of an electric motor |
05/31/1988 | US4748362 D. C. motor with multi-tooth poles |
05/31/1988 | US4748358 Electric starter motor with holder for permanent magnets |
05/31/1988 | US4748353 Hand tool for clockwise and counterclockwise rotations |
05/31/1988 | CA1237461A1 Direct current machine |
05/25/1988 | CN86107654A Electric and magnetic mixed excitation system |
05/24/1988 | USRE32674 Multiple windings electrical machines |
05/11/1988 | EP0266672A2 Permanent-magnet series motor |
05/11/1988 | DE3720862A1 Series-wound permanent magnet motor |
05/10/1988 | US4743817 Electromagnetic servo unit |
05/04/1988 | EP0265425A1 Commutator machine |
04/27/1988 | EP0265364A1 Permanent magnet assembly and method of making same |
04/27/1988 | EP0265279A2 Flat motor device, method and apparatus for producing the same |
04/21/1988 | DE3634214A1 Drive motor for an apparatus |
04/07/1988 | DE3632014A1 Electrical machine, especially an electric motor |
04/06/1988 | EP0262773A1 Solderless connection for an electric motor |
04/06/1988 | CN87212031U Excitation unit of electro-hydraulic valve motor |
03/30/1988 | CN87105601A Electric machines |
03/30/1988 | CN86106317A D.c. motor with series windings |
03/29/1988 | US4734607 Miniature motor with spark quenching connection between commutator and brushes |
03/17/1988 | DE3620397A1 Electrical machine, especially a small DC motor |
03/16/1988 | EP0260040A1 Suppression in electric motors |
03/16/1988 | CN87106152A Electric motor with velocity indicating device |
03/10/1988 | WO1988001802A1 Electrical machine, in particular electric motor |
03/09/1988 | EP0259025A2 Electric motor with velocity indicating device |
03/09/1988 | EP0258677A1 Carrier plate for installing in an electric motor |
03/09/1988 | CN87106158A Suppression in electric motors |
03/02/1988 | CN87104301A Axial fan type permanent magnet motor |
03/01/1988 | US4728835 Electric motors |
02/24/1988 | CN86201920U Improved starter |
02/23/1988 | US4727273 Permanent magnet type electric motor |
02/10/1988 | EP0255736A1 Automatic tool exchange apparatus |
02/03/1988 | EP0255222A1 Electric motor with commutator oil protection |
02/03/1988 | CN85108196B Arrangements for controlling d.c. motors |
01/27/1988 | EP0254347A1 Electric machine |
01/19/1988 | US4720650 Motor |
01/13/1988 | EP0252481A2 Electric motor system for automobiles |
01/13/1988 | CN87104514A Micromotor |
01/12/1988 | US4719382 Direct-current motor |
01/07/1988 | EP0251350A2 Electric motor |
01/07/1988 | EP0250839A1 Rotor for a direct-current machine |
01/06/1988 | CN85109553A Combined magnetic full force push-pull kinetic energy increasing direct-current motor |
12/30/1987 | CN87104337A Electric motor |
12/30/1987 | CN87104183A Miniature motor fitted with speed governor |
12/29/1987 | US4716330 DC motor with commutator rotor |
12/29/1987 | US4716329 Armature construction for eliminating armature reaction in electric rotating machines |
12/29/1987 | US4715732 Bearing assemblies for motors |
12/08/1987 | US4712034 Multiple ring armature core for direct current motor |
12/03/1987 | WO1987007452A1 Stator for an electrical machine |
12/03/1987 | DE3716625A1 Permanent-magnet-energised (excited) electric motor |
12/02/1987 | EP0247495A2 Electrical apparatus for personal use |
12/01/1987 | US4710667 Brushless D.C. dynamoelectric machine with decreased magnitude of pulsations of air gap flux |
11/24/1987 | US4707910 Method of assembling electric motors |
11/19/1987 | EP0245749A2 Permanent magnet excited D.C. motor |
11/17/1987 | US4707630 Magnetic cover member for magnetic poles of DC motor |
11/17/1987 | US4706512 For a motor vehicle |
11/11/1987 | EP0025058B1 Multiple windings electrical machines |
11/11/1987 | CN87103248A Miniature motor |
11/05/1987 | DE3712652A1 Armature winding for commutator motors and generators having a plurality of pole pairs |
11/04/1987 | CN87206312U General model electric motor for step and dc motor |
10/28/1987 | CN87102756A Shallow cup-shaped miniature motor |
10/27/1987 | US4703210 Miniature electric non-uniform magnetization rotating machine |
10/20/1987 | US4701655 D.C. machine, with mechanical and electrical connections among collector segments |
09/30/1987 | CN86108648A Lightweight high power electromagnetic transducer |
09/23/1987 | EP0238249A2 An electric motor |
09/23/1987 | EP0237935A2 Permanent magnet field DC machine |
09/15/1987 | US4694211 In a motor vehicle |
09/09/1987 | EP0236239A1 Electric starter with an epicycloidalic reduction gear |
09/09/1987 | EP0235735A1 Portable electric tool |
09/09/1987 | EP0235443A1 Improvements in or relating to electric motors and components therefor |
09/08/1987 | US4691746 Flat windings, coil forms, and winding method |
09/03/1987 | DE3606275A1 Electrical machine |
08/20/1987 | DE3604675A1 Drive motor for an apparatus (appliance) |
08/19/1987 | EP0232834A1 Multipole direct current motor |
08/19/1987 | EP0232402A1 D.c. electric motor. |
08/18/1987 | US4687608 Composite permanent magnet for magnetic excitation and method of producing the same |
08/12/1987 | CN87100198A Miniature motor |
08/05/1987 | EP0230759A1 Electrical machines |
08/05/1987 | EP0230639A2 Lightweight high power electromagnetic transducer |
08/04/1987 | US4684839 Structure of electric motor and production method thereof |
08/04/1987 | US4684774 Electrical contacts for a switch |
08/04/1987 | CA1225114A1 Interpole assembly for a dc machine |
07/28/1987 | US4683388 Compound induction electric rotating machine |
07/28/1987 | US4682410 Process of making a dynamo electric machine |
07/21/1987 | US4682066 Alignment system for permanent magnet motors |
07/14/1987 | CA1224235A1 Brushless d.c. dynamoelectric machine having ferrite material magnetic circuit |
07/01/1987 | EP0227558A1 Electric starter with a flux converter for an internal-combustion engine |
06/30/1987 | US4677335 Axial gap type coreless electric motor with noise reduction |
06/30/1987 | US4677334 Flat coil dynamoelectric device with encapsulated preform |
06/30/1987 | US4677332 Electric motor having auxiliary portions distributed at a pitch which is an odd number sub-multiple of the pitch of active portions |
06/30/1987 | US4677330 Miniature motor with frangible magnet retaining boss |
06/30/1987 | US4677329 Sub-assembly for electric motor with stator terminal connection means |
06/24/1987 | EP0226356A1 Electric motor with ironless armature |
06/24/1987 | EP0226331A1 Alignment system for permanent magnet motors |
06/24/1987 | CN85109220A D.c. electric machine with annular magnetic field and disk rotor |
06/24/1987 | CN85106290A D.c. motor having permanent magnetic field system |
06/23/1987 | US4675566 Method of adjusting motor performance |