| Patents for H02K 13 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates, connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation (4,847) |
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| 05/22/1979 | US4156155 Combined rotary electrical contact and shaft seal system |
| 05/22/1979 | US4155499 Method of welding metallic conductors using vibratory energy |
| 05/15/1979 | US4155023 Brush-holder for dynamo electric machines, particularly automotive-type three-phase alternators |
| 05/08/1979 | CA1053882A1 Method of manufacturing electric motor commutator |
| 05/01/1979 | US4152614 Miniature electric motors and method for manufacturing rotors for the same |
| 04/17/1979 | CA1052508A1 Vacuum cleaner housing having separate compartments in heat-exchanging relationship |
| 02/27/1979 | US4142138 Motor control |
| 01/30/1979 | CA1047588A1 Plug-in brush cartridge |
| 01/23/1979 | US4136294 Direct-current micromotor |
| 01/16/1979 | CA1046568A2 Switching apparatus for a machine responsive to a source of dc power |
| 01/16/1979 | CA1046567A1 Direct current electric motor |
| 01/02/1979 | CA1045358A1 Welding leads to commutator bars |
| 12/26/1978 | US4131460 Silicon carbide, copper, carbon |
| 10/10/1978 | US4119875 Direct current electric motor |
| 09/12/1978 | US4114056 Rotor for alternating current generator |
| 09/05/1978 | US4110901 Method of fabricating rotor coil for coreless motors |
| 08/29/1978 | CA1037538A1 Brush arrangement for a permanent magnet coreles motor |
| 08/08/1978 | US4105907 Slip ring structure for dynamo electric machines, particularly automotive-type alternators |
| 07/25/1978 | US4103196 Coreless motor |
| 07/18/1978 | US4101453 Of copper, silicon carbide, carbon and lead |
| 07/04/1978 | US4099077 Rotor for coreless motor |
| 05/09/1978 | US4088912 Brush device for miniature electric motor |
| 04/25/1978 | US4086510 Flat miniature dynamoelectric machine |
| 04/25/1978 | US4086509 Sandwiched slip ring assembly |
| 02/21/1978 | US4075523 Plug-in brush cartridge |
| 01/31/1978 | US4071730 Method to secure armature conductors to the commutator strips in dynamo electric machines |
| 11/15/1977 | US4058804 Signal monitoring system |
| 10/11/1977 | US4052765 Vacuum cleaner |
| 08/02/1977 | US4039915 D-c commutator-type dynamo electric machine with electronic control |
| 07/19/1977 | US4037125 Small-sized direct current rotary electric appliance |
| 07/19/1977 | US4035908 Method of manufacturing electric motor commutator |
| 05/31/1977 | US4026553 Racket for tennis, badminton, squash or the like |
| 05/03/1977 | US4021692 Peripheral commutator for discoidal armature |
| 05/03/1977 | US4020645 Motor-compressor unit of the sealed type for refrigerating appliances |
| 04/19/1977 | US4019076 Electrical commutators and slip-rings |
| 02/15/1977 | US4008410 Commutator for discoidal armature |
| 11/09/1976 | US3991331 Commutating structure for DC machines |
| 10/05/1976 | US3984716 Slip ring and brush arrangement |
| 10/05/1976 | US3984715 Fluid contact for a DC machine |
| 09/14/1976 | US3980914 Brushes for rotating electric machines |
| 09/14/1976 | US3979821 Method of manufacturing rare earth permanent magnet rotor |
| 05/25/1976 | US3959705 Direct current motors with improved commutation |
| 05/25/1976 | US3958326 Method of manufacturing commutator |
| 03/02/1976 | US3942056 Brush holder and rigging assembly for a dynamoelectric machine |
| 02/24/1976 | US3940644 Plural brush DC machine and commutator assembly |
| 02/10/1976 | US3937993 Commutating structure for DC machines |
| 01/20/1976 | US3933687 Method of manufacturing carbon brushes for electrical machines |