Patents
Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091)
10/1987
10/21/1987EP0241531A1 Device for automatic control of direct current motors
10/20/1987US4701653 Disk drive with internal brake and static discharge
10/20/1987US4701650 Brushless motor with phase cancelling leads for rotational speed detector pattern
10/20/1987US4701649 Brushless motor with symmetrical leads for preventing signal distortion
10/15/1987DE3611978A1 Brushless DC motor
10/13/1987US4700189 Linear resolver
10/13/1987US4700098 D.C. motors with unequal pole spacing
10/06/1987US4698563 Semiconductor electric motor having a rotary transformer to excite a rotor
10/06/1987US4698542 Brushless direct current motor system
10/06/1987US4698538 dc brushless electromagnetic rotary machine
09/1987
09/30/1987EP0239261A2 Improvements in or relating to drives for clothes washing machines
09/30/1987CN86108648A Lightweight high power electromagnetic transducer
09/23/1987EP0238253A2 Motion control system
09/16/1987EP0236467A1 Electric motor.
09/15/1987US4694210 Brushless DC motor and sensorless drive arrangement therefor
09/08/1987US4692676 Sewing machine driving apparatus
09/08/1987US4692646 Rotating electric motor with reduced cogging torque
09/08/1987US4692645 Rotating electric motor with reduced cogging torque
09/08/1987US4691746 Flat windings, coil forms, and winding method
09/02/1987EP0234663A1 Brushless d.c. motor
09/02/1987EP0234587A2 Two-phase brushless motor
09/01/1987US4689973 Laundry machine drive
08/1987
08/27/1987DE3700774A1 Permanent-magnet-excited dynamo-electric machine having a slotted laminated core
08/26/1987EP0233540A1 Arrangement and circuit for the electrical commutation of field windings
08/26/1987EP0233326A1 Disk-type brushless fan motor
08/25/1987US4689532 Ferritic sensor, self-controlled synchronous motor
08/19/1987EP0232834A1 Multipole direct current motor
08/19/1987EP0232402A1 D.c. electric motor.
08/18/1987US4687977 Electronically controlled motor and methods of operating same
08/18/1987US4687961 Polyphase DC motor with sensor poles
08/13/1987WO1987002527A3 Device for automatic control of direct current motors
08/12/1987CN86108031A Electrically powered apparatus
08/11/1987US4686400 Small sized fan motor
08/05/1987EP0230639A2 Lightweight high power electromagnetic transducer
08/04/1987US4684857 Optical excitation electromagnetic motor
07/1987
07/30/1987WO1987004576A1 Magnetic rotary device
07/29/1987EP0229911A1 Electrically powered apparatus
07/21/1987US4682065 Molded plastic motor housing with integral stator mounting and shaft journalling projection
07/14/1987US4679313 Method of making a servo motor with high energy product magnets
07/14/1987CA1224235A1 Brushless d.c. dynamoelectric machine having ferrite material magnetic circuit
07/07/1987US4678974 Pulsating current electromotor without commutator
07/02/1987DE3546512A1 Method for producing a wire coil
07/01/1987EP0226626A1 Electric pump
07/01/1987CN86108448A Permanent magnet exciting synchronous electric motor
06/1987
06/30/1987US4677332 Electric motor having auxiliary portions distributed at a pitch which is an odd number sub-multiple of the pitch of active portions
06/30/1987US4677331 Synchronous electrical machine with permanent magnet excitation
06/19/1987DE3543809A1 Permanentmagneterregte synchronmaschine Permanent-magnet synchronous machine
06/18/1987WO1987003648A1 Synchronous machine with permanent magnet excitation
06/10/1987EP0153338B1 Electric machine
06/09/1987US4672274 Motor control circuit for video tape recorders
06/09/1987US4672253 Permanent magnet electrical machine with reduced cogging
06/09/1987US4672250 Drive motor bearing apparatus
06/04/1987DE3542542A1 Disc drive
06/02/1987US4670696 Variable speed variable reluctance electrical machines
05/1987
05/27/1987EP0223678A1 Electronically commutated DC motor
05/27/1987EP0223676A1 Rotation driving system for at least one magnetic disc, and electrical motor included in this system
05/27/1987EP0223516A2 Magnetronic motor
05/27/1987EP0223093A1 Brushless motor
05/26/1987US4668898 Electronically commutated motor
05/26/1987US4668884 Brushless motor
05/26/1987CA1222298A1 Reactance-commutated high resolution servo motor system
05/21/1987WO1987003149A1 Cross-flow cooling fan device
05/21/1987WO1987003049A1 Cross-flow cooling fan device
05/19/1987US4667137 Single excitation pulse brushless DC motor
05/19/1987US4667122 Tachogenerator for speed control of electric motors
05/13/1987EP0221628A2 Variant-pole electric motor
05/13/1987EP0221594A1 Motor with a direct-current supply
05/13/1987EP0221459A2 Axial-flow fan apparatus
05/12/1987US4665331 Brushless DC micromotor
05/06/1987EP0220447A1 Electric motor, in particular an external-rotor motor with permanent-field magnets
04/1987
04/29/1987EP0219497A1 Pulsating current electromotor without commutator
04/23/1987WO1987002527A2 Device for automatic control of direct current motors
04/22/1987EP0218915A1 Flanged support, especially for a laterally and axially pre-loaded bearing assembly of an electric motor with an external rotor
04/21/1987US4659951 Brushless blower motor with load proportional cooling for control circuitry
04/15/1987EP0218017A1 Electronically commutated motors
04/14/1987US4658312 Disk storage drive
04/14/1987US4658162 Printed coil unit for small size actuator
04/07/1987US4656381 Magnetic pole structure having aternate poles extending from a point of bases, for a rotary electric machine
04/07/1987US4656376 Motor-compressor unit with offset starting torque
04/01/1987EP0216252A2 Bearing flange for a braced single-sided and braced axial stored external rotor motor
04/01/1987EP0216202A1 Electric motor
04/01/1987CN86105102A Laser scanning motor having a rotating polygonal mirror and method of mfg. the same
03/1987
03/31/1987US4654566 Control system, method of operating an electronically commutated motor, and laundering apparatus
03/31/1987CA1219894A1 Brushless motor and method of winding it
03/26/1987WO1987001879A1 Electric motor
03/24/1987US4652820 Combined position sensor and magnetic motor or bearing
03/19/1987DE3532510A1 Three-phase tachogenerator
03/18/1987EP0131632B1 Three-phase brushless motor
03/18/1987CN86105052A Direct current electric motor
03/18/1987CN85106443A Rotating electric motor
03/17/1987US4651066 Ferrite permanent magnet electrical machine and the application thereof within vehicle traction drives
03/17/1987US4651041 Electric motor
03/11/1987CN85106983A Electrical motor with permanent magnet rotor
03/03/1987US4647803 Electric motor, particularly a brushless direct current motor
02/1987
02/26/1987WO1987001251A1 Brushless motor
02/26/1987WO1987001247A1 D.c. electric motor
02/26/1987DE3627046A1 Electrical machine, such as a motor or generator
02/25/1987CN85105975A Rotating electric motor
02/24/1987US4645961 Dynamoelectric machine having a large magnetic gap and flexible printed circuit phase winding
02/24/1987US4644643 Method of electrically interconnecting a laminated printed circuit by use of a compressed, solder-plated connector pin
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