Patents
Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091)
02/1987
02/24/1987CA1218402A1 Electromagnetic rotary motor
02/17/1987US4644233 D.C. brushless motor having wider and narrower pole parts
02/17/1987US4644207 Integrated dual pump system
02/10/1987US4642539 Torque motor with unlimited angular excursion
02/10/1987US4642496 Device for detecting the angular position of the rotor of a rotary electric machine with electronic switching
02/10/1987US4642494 Means to improve performance of electric motors
02/04/1987EP0210835A2 Laser scanning motor and method of manufacturing the same
01/1987
01/28/1987EP0210047A2 Motor control and operation
01/28/1987CN85105812A Special electromagnetic motors such as permanent-magnet non-rectifier motors and electromagnetic force motor
01/27/1987US4639648 Three-phase brushless motor
01/20/1987US4638224 Mechanically shifted position senor for self-synchronous machines
01/20/1987US4638201 Electronically commutated dc motor
01/20/1987US4638197 Magnetic flux shield and enhancer for brushless motors
01/15/1987WO1987000362A1 Electric pump
01/14/1987EP0208657A2 Electronic-reverse self-synchronous electric motor
01/14/1987EP0208125A1 Automatic tool exchange system for machine tools
01/14/1987EP0208124A2 Improvement in stepper motors
01/14/1987EP0208123A1 Printed-circuit motor
01/13/1987US4636677 Drive coil wiring structure for brushless motor
01/07/1987EP0207298A1 Stepper motor
01/06/1987US4634948 Stepping motor winding for bipolar drive
01/06/1987US4634343 Apparatus for converting radiant energy such as light or heat directly into turning force
01/02/1987DE3614748A1 Electric motor, especially a DC motor without a commutator, having an external rotor
12/1986
12/30/1986US4633149 Brushless DC motor
12/30/1986US4633110 Motor with stator on printed circuit assembly
12/30/1986US4633109 Electronically commutated, collectorless direct-current motor
12/30/1986EP0206212A2 Improvements in or relating to electrical drive systems
12/30/1986EP0205989A2 Power transmission and braking system
12/30/1986EP0205988A1 Improvements in machine tools
12/23/1986US4631510 Harmonically graded airgap reluctance-type rotating electric resolver
12/23/1986US4631456 Inertial energy storage device and synchronous rotary electrical machine for use therein
12/16/1986US4629948 Electric motor and tachometric generator unit
12/09/1986US4628231 DC motor with electronic commutation circuit
12/03/1986EP0203846A1 Direct-current multipolar machine for submerged use
12/02/1986US4626752 Electric motor having Hall generators and control circuit
12/02/1986US4626751 Direct-current motor without commutator
12/02/1986US4626727 Flat, permanent magnet electric motor
11/1986
11/20/1986EP0201793A2 Motor
11/18/1986CA1214205A1 Commutatorless d.c. motor with electronic commutation
11/06/1986WO1986006564A1 Pulsating current electromotor without commutator
11/05/1986EP0200537A2 Electrical motor with improved tachometer generator
10/1986
10/28/1986US4620139 Brushless d.c. motor
10/21/1986US4618806 Ironless, brushless DC motor with wave-winding
10/14/1986US4617499 Brushless motor
09/1986
09/24/1986EP0195741A1 Electric machine of the synchronous type with permanent-magnet excitation
09/16/1986US4612486 Semiconductor electric motor having a rotary transformer to excite a rotor
09/10/1986EP0193929A2 Method for making a servomotor
08/1986
08/27/1986EP0192469A2 Electric motors and power tools
08/26/1986US4607734 Power transmitting device in a copying machine
08/20/1986EP0191366A1 Drive and positioning system
08/19/1986US4607182 Motor spindle with integrated bearing races
08/19/1986US4606707 Pump apparatus having two drive motors
08/19/1986US4606223 Device for detecting rotating speed of thin shape motor
08/19/1986CA1210045A1 Brushless direct current motor with inverted magnet cup
08/13/1986EP0190918A1 Position sensor/tachometer
08/12/1986US4605889 Brushless tachometer/synchro
08/12/1986US4605874 Brushless D.C. dynamoelectric machine having ferrite material magnetic circuit
07/1986
07/22/1986CA1208272A1 Simple brushless dc fan motor with reversing field
07/15/1986US4600864 Easily restarted brushless DC motor
07/08/1986US4599664 Disk storage drive
07/08/1986US4599561 Device for detecting the relative and absolute position of a moving body
07/08/1986CA1207378A1 Method of commutation and converter circuit for switched reluctance motors
07/01/1986US4598241 Rectifier commutation in electrical machines
06/1986
06/24/1986CA1206508A1 Brushless dc motor with improved starting
06/18/1986EP0184860A1 AC signal generating apparatus
06/10/1986US4594524 Coreless-brushless motor
06/09/1986WO1986003629A1 Brushless motor
06/04/1986EP0183277A2 Brushless motor
05/1986
05/28/1986EP0182702A1 Brushless DC motor
05/28/1986EP0182322A1 Rotational position detection device
05/27/1986US4591766 Brushless direct current motor
05/27/1986CA1205115A1 Simple brushless dc fan motor
05/14/1986EP0180815A1 Variable speed variable reluctance electrical machines
05/13/1986US4588912 D.C. brushless motor with an improved yoke
05/07/1986EP0180120A2 Electronically commutated collectorless d.c. motor
05/07/1986EP0180083A1 Control systems for variable reluctance electrical machines
04/1986
04/29/1986US4585979 Three-phase brushless motor having auxiliary magnetic pole on rotor
04/29/1986US4585963 Brushless direct current motor with inverted magnet clip
04/23/1986EP0178755A2 Rotating electric motor
04/23/1986EP0178380A1 Electronically commutated direct current machine and its use
04/22/1986US4584513 Motor/generator operating on the reluctance principle
04/15/1986US4583015 Single-phase brushless motor with multisector stator armature poles having different cross-sections
04/09/1986EP0176599A1 Device for driving a sewing machine
03/1986
03/26/1986EP0175670A2 Brushless tachometer/synchro
03/25/1986US4578606 Brushless DC electric motor and tachogenerator assembly
03/18/1986US4577139 Commutatorless D.C. motor with three-strand full-pitched stator winding
03/18/1986US4577130 Pancake motor with insitu wound bobbinless stator coils
03/11/1986US4575652 Permanent magnet motor having high starting torque and narrowly-defined detent zones
03/05/1986EP0172977A1 Electric motor
03/05/1986CN85201783U Integrated motor without electric brush for electrically driven bicycle
03/04/1986US4574211 Brushless D.C. motor
02/1986
02/25/1986US4573003 AC Machine optimized for converter operation
02/18/1986US4571528 Electromagnetic rotary motor
02/13/1986WO1986001050A1 Axially compact direct control motor
02/13/1986WO1986001049A1 Slotless and toothless wound stators and methods of production
02/11/1986US4570093 Direct-current motor with two drive magnets
02/11/1986US4570092 Driving apparatus useful in a movable toy
02/05/1986EP0170452A1 Rotating electric motor
02/04/1986US4568865 Position sensing device
02/04/1986US4568862 Commutatorless d.c. motor with electronic commutation
1 ... 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101