Patents
Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091)
12/1993
12/15/1993EP0574010A2 Electronically commutated motor controlled with direct-current pulses
12/09/1993WO1993024983A1 Electric machine with semiconductor valves
12/09/1993WO1993024955A1 Fluid-cooled power transistor arrangement
12/07/1993US5267842 For ventilating electrical and electronic equipment
11/1993
11/30/1993US5266855 Electric motor for clothes washing machine drive
11/25/1993WO1993023918A1 Variable reluctance drive system
11/25/1993WO1993023266A1 Electric car
11/25/1993CA2134896A1 Variable reluctance drive system
11/24/1993EP0571314A2 Redundant switched reluctance motor
11/19/1993CA2086948A1 Redundant switched reluctance motor
11/18/1993EP0570231A1 Stator unit of flat motor
11/16/1993US5262703 Low noise miniature electric motor
11/11/1993WO1993022820A1 A rotor position detecting apparatus for a brushless motor
11/09/1993US5260619 Frequency generator
11/04/1993DE4208663A1 Low cost electric disc rotor machine - has rectangular stator windings arranged on sides of disc rotor to increase output without increasing size
11/03/1993EP0567688A1 Fluid conveying device, particularly a fan
11/02/1993US5258735 Multi-pole composite magnet used in a magnetic encoder
11/02/1993US5258697 Efficient permanent magnet electric motor
11/02/1993US5258679 Structure of DC motor with electronic commutation
11/02/1993US5257828 Method and apparatus for controlling damping in an electric assist steering system for vehicle yaw rate control
10/1993
10/28/1993DE4213380A1 Electronically commutated brushless DC motor with permanent magnets - has circumferential dimension of each rotor magnet equal to sum of breadths of adjacent stator tooth pole piece and gap
10/28/1993DE4213377A1 Electronically commutated brushless DC motor - has tubular supports for stator windings and insulating coil former with support for each winding into which stator teeth are inserted before being assembled together
10/28/1993DE4213376A1 Brushless electric motor with magnet yokes between stator teeth - has arcuate section of internal surfaces of spaces accommodating windings with yoke thickness increasing in both directions from centre
10/28/1993DE4213375A1 Permanent-magnet internal rotor esp. for brushless motor - has two magnets with rectangular cross-section bonded to nonmagnetic shaft and held between massive shells completing cylindrical structure
10/28/1993DE4213373A1 Brushless DC motor with redn. of current peaks in winding - has numbers of wound stator teeth and of magnetic poles of permanent-magnet rotor in ratio of 3 to 2
10/27/1993CN1077824A Program sample introduction method
10/26/1993US5256924 Superconducting commutator for DC machines
10/26/1993US5256923 Switched reluctance motor with sensorless position detection
10/26/1993CA1323650C Electrically commutated motor having an edgewise wound yoke
10/20/1993EP0365535B1 Stator assembly for dynamoelectric machine
10/20/1993CN2144367Y AC brushless electric machine
10/19/1993USRE34412 Disk storage drive having motor drive with non-corrodible hub
10/19/1993US5254925 Permanent magnet control means
10/13/1993EP0565312A2 Integral motor and control
10/13/1993EP0368940B1 Electric motor
10/12/1993US5252876 Frequency generator and a D.C. motor equipped with same
10/12/1993US5252873 DC brushless motor
10/05/1993US5250867 Permanent magnet brushless DC motor having reduced cogging
09/1993
09/30/1993WO1993019510A1 Electronically switched small-power motor
09/28/1993CA1322454C Air conditioner equipped with scroll type compressor
09/23/1993DE4208471A1 Elektrisch kommutierter kleinmotor Electrically commutated motor small
09/16/1993DE4205985A1 Brushless external rotor motor - ensures small spacing between magnet and motor shaft with iron free coil around magnet
09/16/1993DE4205926A1 Elektrische pumpe Electric pump
09/14/1993US5245236 Industrial heat dissipating electric fan
09/14/1993US5245235 Motor having index detection mechanism used for disc apparatus and disc apparatus using such a motor
09/14/1993US5245234 Motor
09/09/1993DE4129651A1 Electromotor drive unit with electric motor control - has electric motor and control circuitry, for driving and-or controlling revolution speed and torque, as compact, integral module
09/07/1993US5243248 Electric motor having a low loss magnetic flux return path
09/07/1993US5243242 In-hub motor
09/02/1993WO1993017484A1 Electric pump
09/01/1993EP0558181A1 IC controlled DC motor
08/1993
08/24/1993US5239218 Step motor and method for recording position signal of motor rotor
08/24/1993US5239217 Redundant switched reluctance motor
08/24/1993US5237737 Method of making a permanent magnet rotor
08/20/1993CA2080162A1 Electromagnetic motor
08/19/1993DE4204508A1 Power saving saturation motor - has segments having permeability reduced by electrical energy claimed back at end of switch operation
08/18/1993EP0349546B1 Electric motor
08/11/1993EP0555151A1 D.C. Motor with electronic commutator
08/05/1993WO1993015550A1 Reluctance motor and rotor of high-speed reluctance motor
08/05/1993WO1993015547A1 Brushless dc motors/generators
08/05/1993WO1993015513A1 Permanent magnet control means
08/05/1993DE4042432A1 Electronically commutated DC machine
08/04/1993EP0553866A2 Permanent magnet control means
08/04/1993EP0553354A1 Brushless DC motor without position sensor
08/03/1993US5233296 Floppy disk drive revolution detector avoiding interference with magnetic circuit
08/03/1993US5233280 Variable speed multi-phase motor powered via a converter
08/03/1993US5233253 Multi-phase DC motor
08/03/1993US5233250 Three-phase brushless motors with half-wave control
08/01/1993CA2088090A1 Permanent magnet control means
07/1993
07/28/1993EP0552232A1 An electric power train for vehicles.
07/22/1993DE4300940A1 Operating element for acceleration system, e.g. for diesel engine driven shovel - has housing and drive part with reversible rotating motor having RPM redn. unit
07/20/1993US5229677 Electric propulsion motor for marine vehicles
07/13/1993US5227935 Tape drive having a selectively retractable drive hub
07/13/1993US5227704 Motor controls, refrigeration systems and methods of motor operation and control
07/13/1993US5227702 Direct current motor utilizing back electromotive force
07/08/1993WO1993013585A1 Flat brushless motor
07/07/1993CN2137838Y Column special-kind electric motor
07/07/1993CN1074065A Non-brush permanent-magnet direct-current machine with printed windings
06/1993
06/30/1993EP0549429A1 Permanent magnet rotor with instantaneous position indicator and a magnetomotive machine such as a brushless motor, with such a rotor
06/30/1993EP0549427A1 Rotor of a dynamo-electric machine with at least one magnetized area and dynamo-electric machine, such as a brushless motor, equipped therewith
06/30/1993EP0549426A1 Permanent magnet rotor and dynamo-electric machine, such as a brushless motor
06/30/1993EP0548362A1 Flat coreless dc motor
06/29/1993US5223759 DC brushless motor with solid rotor having permanent magnet
06/29/1993CA2037852C Brushless d.c. motor with plastic stator base
06/24/1993WO1993012573A1 Doubly salient reluctance machines
06/23/1993EP0547935A1 Device for measuring the instantaneous angular position of the rotor of an electrodynamic machine
06/16/1993CN1073306A Direct current motor utilzing back electromotive force
06/15/1993US5220228 Rotating electric machine with bevelled armature poles
06/10/1993WO1993011597A1 Brushless motor
06/09/1993DE4140245A1 Brushless DC motor for high speed printer paper feed - has rotor provided by non-magnetic sleeve enclosing permanent magnet adhered to sleeve inside wall
06/02/1993EP0522015A4 Method of making an electromagnetic transducer
06/01/1993USRE34268 Brushless direct current motor system
06/01/1993US5216557 Disk storage device having a brushless dc drive motor
06/01/1993US5216339 Lateral electric motor
06/01/1993US5215385 Low-profile disk drive motor with deflecting-pad bearings
05/1993
05/27/1993WO1993010593A1 Brushless dc motor
05/26/1993EP0543625A2 Permanent magnet dynamoelectric machines
05/25/1993US5214365 Three-phase reluctance type electric motor
05/25/1993US5214336 Motor and/or generator in which radially projecting pole shanks are laterally offset at an angle relative to the radial center line of symmetry of a stator sector
05/13/1993WO1993009550A1 Multi-pole composite magnet used in a magnetic encoder
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