Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091) |
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08/23/1994 | CA2115854A1 Single phase electronically commutated motor system and method |
08/23/1994 | CA2000556C Capacitively commutated brushless dc servomotors |
08/17/1994 | EP0610767A2 Electric motor, particularly a converter-fed asynchronous motor for propelling motor vehicles |
08/10/1994 | EP0609800A1 Switched reluctance motor as traction motor for electric drive vehicle |
08/09/1994 | US5337030 Permanent magnet brushless torque actuator |
08/09/1994 | US5336956 Brushless dynamo machine with novel armature construction |
08/04/1994 | WO1994017582A1 Electromagnetically powered rotary motor apparatus and method |
08/04/1994 | DE4311274A1 Switched reluctance traction motor |
08/02/1994 | USRE34684 Drive motor for magnetic disks, optical disks, and magneto-optical disks |
08/02/1994 | US5334899 Polyphase brushless DC and AC synchronous machines |
08/02/1994 | US5334898 Polyphase brushless DC and AC synchronous machines |
08/02/1994 | CA1331103C Drives for clothes washing machines |
07/28/1994 | DE4402411A1 Permanent-magnet synchronous motor with current-smoothing mechanism |
07/28/1994 | DE4334482A1 Synchronous motor with perforated flux guides on outer part of stator |
07/28/1994 | DE4302042A1 Compact, flat construction electromotor |
07/26/1994 | US5332374 Axially coupled flat magnetic pump |
07/26/1994 | CA1330882C Electrically commutated motor having an edgewise wound yoke |
07/21/1994 | DE4343933A1 Electric drive for appts. with several, coaxial, driven shafts |
07/19/1994 | US5331245 Permanent magnet excited electric motor with improved torque ripple |
07/19/1994 | US5331244 Permanent magnet DC machine having meander-like stator windings for producing high torque without excessive heating |
07/14/1994 | DE4300145A1 Storage disk collectorless drive motor |
07/12/1994 | US5329195 Sensor motor |
07/12/1994 | US5327790 Reaction sensing torque actuator |
07/05/1994 | US5327069 Switched reluctance machine including permanent magnet stator poles |
07/05/1994 | US5327064 Brushless motor incorporating an integrated circuit having a single chip peripheral circuit |
07/05/1994 | US5327034 Electrically motorized wheel assembly |
07/05/1994 | US5327033 Micromechanical magnetic devices |
06/28/1994 | US5325006 Sealed magnetic fluid bearing for polygon mirror drive motor |
06/28/1994 | US5325005 Motor commutation |
06/23/1994 | WO1994014226A1 Motor system with individually controlled redundant windings |
06/21/1994 | US5323075 Hall effect sensors embedded within two-pole toothless stator assembly |
06/16/1994 | DE4241553A1 Washing machine drive is fed via frequency transformer - features raised secondary resistance of rotor to improve effectiveness at lower speeds |
06/16/1994 | DE4241522A1 Reluctance motor with magnetic circuit completed through unwound rotor - uses cruciform, beam-shaped, star-shaped or disc-shaped rotor with opposite magnetic poles excited at its ends by stator windings |
06/14/1994 | US5319844 Method of making an electromagnetic transducer |
06/09/1994 | WO1994013052A1 High power self-controlled multi-phase synchronous machine |
06/09/1994 | WO1994013051A1 Brushless dynamoelectric machine with specialized armature construction |
06/08/1994 | EP0600110A1 Magnetic speed reducer |
06/07/1994 | US5319271 Pulse signal generating device |
06/07/1994 | US5319270 Electric motor |
06/01/1994 | CN1024878C Brushless step-governor d. c. motor |
06/01/1994 | CN1024877C DC motor with magnetic pole and magnetic field commutator |
05/26/1994 | WO1994011945A1 Method of observer-based control of permanent-magnet synchronous motors |
05/26/1994 | DE4238886A1 Disc store automatic data storage disc prodn. with disc(s) in flat housing - from composite with inner and outer layers of soft magnetic steel sheet and core of flexible plastics with integrated circuitry |
05/26/1994 | CA2148466A1 Method of observer-based control of permanent-magnet synchronous motors |
05/18/1994 | EP0597678A1 Integral bearing type electric motor |
05/17/1994 | US5313159 Magnetic encoder with composite magnet |
05/11/1994 | EP0596682A1 Motor with position sensing |
05/10/1994 | US5311092 Lightweight high power electromagnetic transducer |
04/28/1994 | WO1994009549A1 Composite magnet brushless dc motor |
04/27/1994 | EP0593913A2 Electrically driven hydraulic pump |
04/26/1994 | US5306996 AC/DC stepped drive system |
04/26/1994 | US5306183 Propulsion systems for submarine vessels |
04/21/1994 | DE4244721A1 Elektrische Maschine mit fluidgekühlten Halbleiterelementen Electrical machine with fluid-cooled semiconductor elements |
04/20/1994 | EP0431006B1 An electric motor |
04/20/1994 | CN1085694A Brushless motor |
04/19/1994 | US5304886 Printed circuit motor |
04/13/1994 | EP0592083A1 Permanent magnet brushless torque actuator |
04/06/1994 | EP0590185A1 Electromagnetic motor |
04/06/1994 | EP0368930B1 A motor or alternator |
03/31/1994 | DE4229261C1 Electric generator for bicycle or individual wheel with rotor at rotatable wheel - equipped with permanent magnets and stator formed by coil system for receiving induced voltage is fixed on wheel spindle and generator can be used as servo motor |
03/24/1994 | DE4231784A1 Electrically-driven hydraulic pump - cools control stage for collectorless electric motor by hydraulic fluid handled by pump |
03/23/1994 | EP0588478A2 Electric stepper motor |
03/23/1994 | EP0588448A2 Electric motor |
03/23/1994 | EP0587812A1 Electrical machines. |
03/23/1994 | EP0587643A1 Head drum for a recorder. |
03/17/1994 | WO1994006198A1 Quasi square-wave back-emf permanent magnet ac machines with five or more phases |
03/16/1994 | CN1083981A Permanent magnetic rotator of brushless electric motor and manufacture thereof |
03/15/1994 | US5294856 Shifted pole single phase variable reluctance motor |
03/03/1994 | WO1994005075A1 Permanent magnet rotor of brushless motor and production method thereof |
03/03/1994 | WO1994005074A1 Brushless dc motor and its driving method |
03/03/1994 | CA2142089A1 Permanent magnet rotor of brushless motor and production method thereof |
03/02/1994 | CN1083279A Brushless DC motor and method for rotative driving of same |
03/01/1994 | US5291357 Magnetic recording device having reduced electromagnetic interference |
03/01/1994 | US5291104 DC commutatorless motor |
02/22/1994 | US5289069 Brushless motor |
02/22/1994 | US5289066 Stator for dynamoelectric machine |
02/17/1994 | WO1994003779A1 Position detection apparatus |
02/16/1994 | CN2156615Y Electronic dc motor |
02/02/1994 | EP0581173A1 Fuel supply device |
02/02/1994 | CN1081543A Motor controlled by rotating magnetic field switch |
02/01/1994 | US5283485 Small-size motor and a process for manufacture and use thereof |
01/26/1994 | CN1081292A Magnetic motor construction |
01/20/1994 | WO1994001920A1 Brushless motor |
01/20/1994 | WO1994001919A1 Fault-tolerant reluctance motor |
01/20/1994 | WO1994001917A1 Electric motor-wheel |
01/20/1994 | CA2139584A1 Brushless motor |
01/18/1994 | US5280211 Motor and/or generator operating according to the reluctance principle |
01/13/1994 | DE4222370A1 Fehlertoleranter Reluktanzmotor Fault-tolerant reluctance motor |
01/12/1994 | EP0577843A1 Reluctance motor and rotor of high-speed reluctance motor |
01/11/1994 | US5278482 Three-phase reluctance type motor |
01/11/1994 | US5278468 Structure for a DC motor with an electronic commutation |
01/06/1994 | WO1994000903A1 Magnetic motor construction |
01/05/1994 | DE4220458A1 Electric motor with safety brake - comprises DC motor with high reluctance torque having permanent magnet rotor |
12/29/1993 | EP0576307A1 Autosynchronous motor and electric traction system using an autosynchronous motor |
12/29/1993 | EP0576252A2 Magnetic motor construction |
12/29/1993 | CN1080050A A rolor position detecting apparatus for a brushless motor |
12/21/1993 | US5272402 Electrical machine with device for detecting rotor position and rotational speed |
12/16/1993 | DE4218888A1 Commutator machine with stator poles facing magnetised rotor segments - has oppositely wound pairs of pole pieces broadened into faces aligned with radially magnetised segments of external rotor |
12/16/1993 | DE4217289A1 Fluid-cooled power transistor device, e.g. IGBT, MOSFET or BIMOS for controlling machine |
12/15/1993 | EP0574039A1 Brushless motor |