| Patents for H02K 16 - Machines with more than one rotor or stator (6,539) |
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| 07/31/1990 | US4945296 Variable speed controllable induction motor |
| 07/31/1990 | CA2008306A1 Mechanical stabilization system using counter-rotation and a single motor |
| 07/25/1990 | CN2059779U Dynamic generator |
| 07/18/1990 | CN2059537U Cage-type asynchronous motor with stepless speed regulation |
| 06/28/1990 | DE3941947A1 Shaft conveying machine cable winch drive - uses two three=phase asynchronous machines with slip-ring rotors coupled via electric line |
| 04/24/1990 | US4920293 Squirrel-cage induction motor |
| 04/04/1990 | EP0361925A2 Electromechanical machines |
| 03/29/1990 | DE3832304A1 Actuating drive |
| 03/15/1990 | DE3925812A1 Generator plant on-board ship - is integrated in propeller shaft line with armature and stator located so that they are driven simultaneously |
| 03/07/1990 | EP0357317A1 Electric motor |
| 01/31/1990 | EP0353042A1 Axial field electrical generator |
| 01/17/1990 | EP0351271A1 Coupling of two electrical motors |
| 01/03/1990 | CN1038553A Dual-shaft ac governor motor |
| 12/27/1989 | CN1006265B Method of stepless speed control of a.c. motor and the motors |
| 11/29/1989 | EP0343655A1 Linear driving apparatus |
| 11/29/1989 | EP0343397A1 Redundant actuating device |
| 11/29/1989 | CN2048639U Direct transmission natural direct current generator |
| 11/28/1989 | US4883996 Motor |
| 11/22/1989 | CN1037434A Vector superposed asynchronous motor |
| 11/22/1989 | CN1037432A Output-adjustable driver for machineries |
| 11/21/1989 | US4882515 Alternating current generator |
| 11/21/1989 | US4882513 Dual permanent magnet generator |
| 11/07/1989 | US4879484 Alternating current generator and method of angularly adjusting the relative positions of rotors thereof |
| 10/18/1989 | CN1036485A Ac speed regulating motor with full-phase cluster-wound winding and two output shafts |
| 10/17/1989 | US4874974 Motor with an auto output adjusting device |
| 10/10/1989 | US4873462 Stepping motor with low detent torque |
| 10/04/1989 | EP0263110B1 Machine with magnetic bearing rotor and electric radial field machine |
| 09/26/1989 | CA1261916A1 Hybrid generating system |
| 09/13/1989 | EP0331914A2 Four degree of freedom gripper |
| 09/06/1989 | CN2044112U Three-phase asynchronous stepless speed regulating motor |
| 08/30/1989 | CN1035211A Motor with double rotors |
| 08/22/1989 | US4858490 Two motor redundant drive mechanism |
| 08/09/1989 | CN1034641A Axial air gap motor |
| 08/02/1989 | CN2042254U Polarity-variable exciting dc generator |
| 07/26/1989 | CN1034291A Double motor type inductor generator |
| 07/25/1989 | CA1257887A1 Outer arm assembly for industrial robot |
| 07/19/1989 | CN1034098A Stepless speed regulating ac motor |
| 07/18/1989 | US4848188 Momentum compensated actuator with redundant drive motors |
| 06/28/1989 | CN1033546A Speed regulator for cage phase-shift motor |
| 06/20/1989 | US4841185 Rising frequency generator |
| 06/15/1989 | DE3740767A1 Hermetically encapsulated refrigerating compressor |
| 05/31/1989 | CN2038688U Asynchronous motor |
| 05/31/1989 | CN1033224A Induction machine without rectifier (collector) and its derivatives |
| 05/17/1989 | CN1032992A Double-rotor dynamo-electric machine |
| 05/09/1989 | US4829205 Dual-rotary induction motor with stationary field winding |
| 05/05/1989 | WO1989004081A1 Drives with double-rotating electric machines |
| 05/03/1989 | CN1032719A Annular electric machine and torque converter thereof |
| 04/19/1989 | EP0311872A1 Two motor redundant drive mechanism |
| 04/11/1989 | CA1252509A1 Voltage regulated permanent magnet generator system |
| 04/06/1989 | WO1989002996A1 Dual generator phase shifting device |
| 04/04/1989 | US4817461 Dual generator phase shifting device |
| 03/08/1989 | EP0305569A1 Electrical machines |
| 02/22/1989 | CN2033166U Signal step commutation generator |
| 02/15/1989 | CN1031162A Power generator with high-energy rotator |
| 02/07/1989 | US4803390 Dual motor drive arrangement for a small domestic appliance |
| 02/01/1989 | CN1030854A Variable speed controllable induction motor |
| 01/18/1989 | EP0299739A2 Variable speed controllable induction motor |
| 01/18/1989 | CN2031174U Dc motor without commutator |
| 01/17/1989 | US4798999 Numerically controlled electromechanical precision drive system |
| 12/21/1988 | CN88103876A Doubling-step rectifying electric-generator |
| 12/21/1988 | CN87209496U Circular ring low medium, high-frequency permanent magnet ac generator |
| 11/16/1988 | CN87212741U Twin-stator 3-phase alternator |
| 11/15/1988 | US4785213 Variable speed controlled induction motor |
| 11/01/1988 | US4782257 Dual rotor magnet machine |
| 10/25/1988 | US4780659 High-power, high-voltage direct current power source |
| 10/25/1988 | US4779486 Rate biased differential gear momentum compensated actuator |
| 10/19/1988 | CN87102754A Coaxial motor-generator group and its motor driven conveying equipment |
| 10/06/1988 | WO1988007782A1 Electric generator |
| 10/04/1988 | US4775812 Three section brushless motor |
| 09/28/1988 | CN87216443U Speed regulating device of cage phaseshift motor |
| 07/27/1988 | CN87217235U Axial air-gap synchronous motor with consentric construction |
| 07/27/1988 | CN87217225U Motor with axial air-gap |
| 07/19/1988 | US4758132 Rotary machine with motor embedded in the rotor |
| 07/13/1988 | CN85104531B Globular rotor moment electric motor |
| 07/06/1988 | EP0273483A1 Driving device for a small household appliance |
| 07/06/1988 | EP0273482A1 Driving device for a small electrically driven apparatus and method for assembling the driving device |
| 07/05/1988 | US4755700 Variable speed AC motor |
| 06/15/1988 | CN86108143A Inverse double-rotation type of coaxial slave exciter |
| 05/18/1988 | CN87212959U Motor with three speed |
| 05/11/1988 | EP0266556A2 A rotating electric machine for use as a motor |
| 04/21/1988 | DE3505813A1 Improving the useful effect in the case of electricity generation |
| 04/20/1988 | EP0263832A1 Control circuit of the power transistor in a dc/ac converter |
| 04/20/1988 | CN87209612U Stepless speed-controlled asynchronous motor |
| 04/20/1988 | CN86106924A Compact horizontal hydraulic generator set |
| 04/06/1988 | CN86106631A Alternating stepless speed regulating machine |
| 03/01/1988 | US4728841 Dual permanent magnet generator construction |
| 02/04/1988 | DE3625994A1 Generator for converting mechanical energy into electrical energy |
| 01/25/1988 | EP0238660A4 Hybrid generating system. |
| 01/20/1988 | CN87104898A Ring low-medium-high frequency a.c. alternator |
| 01/07/1988 | EP0250551A1 Dual permanent magnet generator |
| 12/23/1987 | EP0249807A1 Electric drive for motor vehicles |
| 12/17/1987 | WO1987007785A1 Dual permanent magnet generator |
| 12/16/1987 | CN87104033A Variable speed controlled induction motor |
| 12/10/1987 | DE3618667A1 UNIMOT electrical two-motor drive having a hybrid reversible-pole drum winding |
| 12/09/1987 | EP0248595A2 Variable speed controlled induction motor |
| 10/31/1987 | CN86207316U A c stepless variable driving motor |
| 10/20/1987 | US4701652 Drive device, particularly for textile machines |
| 10/01/1987 | DE3607899A1 Actuator |
| 09/30/1987 | EP0238660A1 Hybrid generating system |
| 09/30/1987 | EP0238659A1 Quick disconnect mechanism |