Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091) |
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05/02/1991 | EP0425312A2 Spindle motor assembly for a disk drive |
04/30/1991 | US5012169 Motor drive system |
04/28/1991 | CA2027225A1 Spindle motor assembly for disc drives |
04/23/1991 | US5010268 Electrical multi-pole machine |
04/23/1991 | US5010267 Variable speed machine with high power density |
04/23/1991 | US5009436 Magnetic fluid seal assembly |
04/17/1991 | CN2075400U Motor without both position sensor and brush |
04/16/1991 | US5008573 Magnetic disk enclosure with detachable stator |
04/11/1991 | DE3932802A1 Brushless high speed DC vacuum cleaner motor - has electronic commutation for hazardous applications using Hall-effect sensors in permanent magnet rotor with in-built stator current limit |
04/10/1991 | EP0421346A2 Method for producing an electric rotary machine such as a motor of DC brushless type |
04/10/1991 | EP0420885A1 Tacho generator |
04/09/1991 | US5006943 Disk storage drive |
04/09/1991 | US5006765 DC motor with coreless coil installation |
04/09/1991 | US5006745 Polyphase direct current motor |
04/09/1991 | US5006744 Integrated electronically commutated motor and control circuit assembly |
04/09/1991 | US5006045 Scroll compressor with reverse rotation speed limiter |
04/04/1991 | WO1991004602A1 Three-phase reluctance motor |
04/03/1991 | EP0420501A1 Method and apparatus for detecting the rotor position of a brushless DC motor |
04/02/1991 | US5004944 Lightweight high power electromagnetic transducer |
03/27/1991 | EP0418712A1 Position sensor |
03/27/1991 | CN2074078U Permanent-magnet brushless d.c. motor |
03/21/1991 | WO1991003858A1 Reactance type motor |
03/19/1991 | US5001581 Disk storage drive |
03/19/1991 | US5001405 Position detection for a brushless DC motor |
03/19/1991 | US5001375 D. C. electric motor |
03/12/1991 | US4998865 Brushless DC pump with enclosed circuit board |
03/07/1991 | WO1991002735A1 Chemical compounds based on a netropsin or distamycin molecule coupled with an intercalating agent, method for preparing said compounds and pharmaceutical compositions containing same |
03/07/1991 | DE4027245A1 Digital regulator for servomotor with interchangeable circuit board - contains additional printed circuit board for transmission of angle data from commutation sub-assembly to positioning module |
03/06/1991 | EP0415076A2 Suction cleaner |
03/06/1991 | CN1049668A Process for preparing sequence of antidirection direction, antimessenger rna oligonuclectides of alpha tnf |
03/05/1991 | US4998052 Gearless direct drive switched reluctance motor for laundry application |
03/05/1991 | US4998032 A brushless DC |
03/05/1991 | CA1281066C2 Ironless, brushless d.c. motor with wave winding |
02/27/1991 | EP0414607A2 Anti-sense nucleotide sequence, anti RNA against alpha TNF messenger RNA, process for the preparation thereof, medical use thereof and its inclusion in pharmaceutical preparations |
02/27/1991 | CN1049578A Electric motor with random coaxial reversing |
02/26/1991 | US4995159 Method of making an electronically commutated reluctance motor |
02/20/1991 | EP0413113A2 Electronically commutated motor for vacuum cleaner and the like |
02/20/1991 | EP0412993A1 Tape drive machines. |
02/19/1991 | US4994702 Motor |
02/13/1991 | EP0412340A1 Synchronmotor, preferably electronically commutated servomotor with permanent magnet excitation |
02/12/1991 | US4992688 Printed circuit board with a metallic layer for supporting an electrical component |
02/07/1991 | WO1991001584A1 Radial drive for implantable centrifugal cardiac assist pump |
02/05/1991 | US4990843 Reluctance motor |
01/30/1991 | EP0410784A1 Drive for laundry machines |
01/30/1991 | EP0410293A1 Spindle motor |
01/30/1991 | EP0410047A1 Improvements to brushless tachogenerators with position sensor for brushless motors |
01/29/1991 | US4988905 Integrated driver-encoder assembly for brushless motor |
01/24/1991 | WO1991001062A1 Method of and device for controlling induction motor for compressor |
01/23/1991 | EP0409661A1 Motor |
01/22/1991 | US4987333 Electric motor with inner drive pulley |
01/22/1991 | US4987331 Non-brush D.C. motor with an improved stator |
01/22/1991 | US4987329 Motor magnet arrangement |
01/22/1991 | CA2021663A1 Motor |
01/15/1991 | US4985792 Disk drive spindle motor with externally mounted flux concentrator ring |
01/15/1991 | US4985669 Electrical rotating machine |
01/11/1991 | CA2020735A1 Radial drive for implantable centrifugal cardiac assist pump |
01/02/1991 | EP0405258A2 Rotary electric machine |
01/02/1991 | EP0236467B1 Electric motor |
01/01/1991 | US4982125 Brushless motor |
12/27/1990 | EP0404299A1 Brushless motor |
12/25/1990 | US4980594 Compact servomator having an integrally wound resolver |
12/25/1990 | US4980590 Flat brushless motor with a back-yoke formed as an eccentric weight to induce vibrations |
12/25/1990 | US4980587 Spindle motor with precision bearings |
12/18/1990 | US4978878 Electric multipolar machine |
12/18/1990 | CA1278015C Stator assembly for dynamoelectric machine |
12/12/1990 | EP0402179A1 An electric motor |
12/06/1990 | DE3916870A1 Dynamoelectric machine for vehicle drive and regenerative brake - has pulsed commutation, speed, direction and output control using solid state circuitry and cylindrical or salient pole construction |
12/04/1990 | US4975608 Switched reluctance motor with full accommutation |
12/04/1990 | US4975607 Frequency generator with superimposed generation coil |
11/27/1990 | US4973869 Brushless coreless DC motor |
11/20/1990 | US4972112 Brushless DC motor |
11/14/1990 | EP0397143A1 Electronically commutated direct-current motor |
11/13/1990 | US4970423 Stepper motor with a rotor teeth sensor |
11/12/1990 | CA2015605A1 Electronically commutated dc motor |
11/07/1990 | EP0395747A1 Polyphase electronically commutated reluctance motor |
11/07/1990 | CN1046820A Impulse magneto |
11/06/1990 | US4968921 Electromagnetic motor with secondary stator coils |
11/06/1990 | US4968913 Two-phase brushless motor |
10/31/1990 | DE3914082A1 Electronically-commutated electric motor - has currents in stator windings overlapped during commutation process |
10/30/1990 | CA1275679C Motor driven air moving apparatus for high speed, constant duty operation |
10/24/1990 | EP0393266A1 Improved spindle motor for a disc drive |
10/24/1990 | CN1046417A Electronic commutated dc motor |
10/23/1990 | US4965476 Stabilized disk drive spin motor |
10/18/1990 | DE3911602A1 DC motor with permanent magnet rotor and pulsed stator - has electronic commutation, axially aligned stator slots, two layer trifurcated winding and uneven slot count |
10/17/1990 | CN2064130U Plane suspension motor and its controller |
10/16/1990 | US4963808 Motor control apparatus |
10/16/1990 | US4962583 Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means |
10/11/1990 | DE3915356A1 Electric motor with reduced vibration for acoustically sensitive area - has asymmetric air gap for generating magnetic side thrust on output shaft to minimise effect of pulsed torque variation |
10/04/1990 | WO1990011641A1 Electronically commutated reluctance motor |
10/04/1990 | DE4008912A1 Superconducting electric machine - has one superconducting magnet which is held stationary in housing surrounding shaft |
10/04/1990 | DE3910498A1 Tachogenerator having a rotor position transmitter for a three-phase servomotor with rotation-speed regulation and electronic commutation |
10/02/1990 | US4961017 Stator for use in a brushless motor |
09/30/1990 | CA2013512A1 Circumferential motor |
09/27/1990 | CA2011732A1 Axial gap superconducting electrical machine |
09/26/1990 | EP0388965A2 Brushless electric motor |
09/25/1990 | US4959595 Rotating electric machine having a coil coaxial with rotating shaft |
09/25/1990 | CA1274572A1 Electronically commutated motor |
09/20/1990 | WO1990007220A3 Electrically switched synchronous motor drive |
09/19/1990 | EP0387467A2 Switched reluctance motor and operating method |
09/19/1990 | CN2062518U Axial exciting induction motor |