| Patents for H02K 37 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors (3,591) |
|---|
| 01/15/1991 | US4985669 Electrical rotating machine |
| 01/08/1991 | US4983867 Inner rotor |
| 12/27/1990 | WO1990016107A1 Compact monophase electromagnetic actuator |
| 12/18/1990 | US4978878 Electric multipolar machine |
| 12/05/1990 | EP0371132A4 Electric drive |
| 12/05/1990 | CN2067045U Double eccentric single phase permanent magnet stepper motor integral stator sheet |
| 11/27/1990 | US4973866 Variable angle stepper motor |
| 11/22/1990 | EP0398470A2 Inertia damper |
| 11/22/1990 | CA2016332A1 Method for making a timepiece stepping motor |
| 11/20/1990 | US4972109 Stepping motor |
| 11/13/1990 | US4970421 Electric machines |
| 10/24/1990 | CN1010159B Electromechanical actuator |
| 10/18/1990 | DE4003112A1 Dielektrischer motor mit einer oder mehreren zentralelektroden Dielectric motor with one or more central electrodes |
| 10/16/1990 | US4963775 Stepping motor |
| 10/16/1990 | US4962583 Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means |
| 10/11/1990 | DE4003113A1 Dielektrischer motor Dielectric motor |
| 09/18/1990 | US4958099 Brushless motor |
| 09/18/1990 | CA1274268A1 Bipolar stepping motor rotor and method of manufacture |
| 09/05/1990 | EP0385203A1 Canned motor |
| 08/28/1990 | US4952859 Stepping motor |
| 08/28/1990 | CA1273390A1 Resin-filled permanent-magnet stepping motor |
| 08/15/1990 | CN1044741A Energy-saving constant-torque stepless speed-regulating step-by-step intelligent motor |
| 08/09/1990 | WO1990009058A1 Dielectric motor with one or more central electrodes |
| 08/09/1990 | WO1990009057A1 Dielectric motor |
| 08/07/1990 | US4947066 High speed variable reluctance motor with equal tooth ratios |
| 07/17/1990 | US4942325 Electric motor |
| 07/17/1990 | CA1271802A1 Variable reluctance polyphase electric motor |
| 07/03/1990 | US4938325 Vibration damping apparatus for pulse motor |
| 06/27/1990 | EP0375283A1 A motor with timing member |
| 06/19/1990 | CA1270513A1 Variable reluctance motor with reduced torque ripple |
| 06/06/1990 | EP0371132A1 Electric drive |
| 05/30/1990 | EP0370395A2 Method of controlling the path of balls in an oscillating bearing |
| 05/21/1990 | CA2000669A1 Dynamic motor controller |
| 05/16/1990 | EP0367870A1 Electric machines |
| 05/15/1990 | US4926077 Resistance compensation in a motor using a thermally variable resistive network |
| 05/02/1990 | EP0365781A2 Stepping motor rotor assembly for an electronic timepiece |
| 05/01/1990 | US4922145 Stepper motor |
| 04/24/1990 | US4920294 Synchronous or stepping motor with simplified tooth alignment |
| 04/24/1990 | US4920292 Motor having rotor capable of both stepped rotary and axial shift motions |
| 04/17/1990 | US4918365 Electromechanical actuator having control and drive circuit |
| 04/03/1990 | US4912832 Method for making a timepiece stepping motor |
| 03/22/1990 | WO1990003031A1 Recording/reproducing apparatus |
| 03/21/1990 | CN1040715A Multipolar stepping motor |
| 03/20/1990 | US4910475 Pole grouping for stepping motor |
| 03/13/1990 | US4908808 Timepiece having a multipolar rotor |
| 02/28/1990 | EP0356396A1 Multipolar step motor |
| 02/28/1990 | EP0355263A2 Motor, in particular for driving a time piece |
| 02/28/1990 | EP0355262A2 Device with a cross-wound coil and a rotary magnet |
| 02/21/1990 | CN2053398U Step motor with double windings and dual pole shoes |
| 02/08/1990 | WO1990001231A1 Resistance compensation in a motor using a thermally variable resistive network |
| 02/06/1990 | US4899072 Pulse motor |
| 01/24/1990 | EP0352189A1 Strong magnetic thrust force type actuator |
| 01/03/1990 | EP0349056A1 Electric multipolar machine |
| 01/03/1990 | EP0349055A1 Electrical multi-pole machine |
| 12/26/1989 | US4890027 Dynamic motor controller |
| 12/26/1989 | US4890024 Low-speed high-torque motor |
| 12/20/1989 | CN2049839U Permanent magnetic step motor with double layer stators |
| 12/19/1989 | US4888507 Stepping motor rotor assembly for an electronic timepiece |
| 12/19/1989 | US4888481 Aligning and protective cover for a motor |
| 12/14/1989 | WO1989012194A1 Electric drive |
| 12/06/1989 | CN2049045U High performance permanent magnetism step motor |
| 12/05/1989 | US4884333 Method of making a stepper motor |
| 11/15/1989 | EP0341867A1 Pulse motor |
| 11/15/1989 | EP0341582A1 Control method for a bidirectional step motor, and bidirectional step motor controlled by this method |
| 11/02/1989 | EP0340029A2 Electric motor |
| 10/10/1989 | US4873462 Stepping motor with low detent torque |
| 09/13/1989 | EP0331914A2 Four degree of freedom gripper |
| 09/06/1989 | CN1005112B Process for producing blue starch ball agent |
| 09/05/1989 | US4864169 Polyphase variable reluctance motor |
| 09/05/1989 | CA1259092A1 Stepper motor housing and pole structure |
| 08/23/1989 | EP0329471A2 Rotary actuator for variable damping force shock absorber |
| 08/15/1989 | US4857786 Structure of stepping motor and method of driving the stepping motor |
| 08/15/1989 | US4857782 Step motor |
| 08/08/1989 | US4855629 DC brushless motor with three teeth and two windings |
| 08/01/1989 | US4853567 Direct drive motor |
| 07/25/1989 | CA1257887A1 Outer arm assembly for industrial robot |
| 07/18/1989 | CA1257667A1 Power combiner, polarizer and structure including a waveguide section rotated by a stepper motor arrangement |
| 06/27/1989 | US4843292 Direct drive motor system |
| 06/27/1989 | CA1256482A1 Proportional solenoid |
| 06/20/1989 | US4841190 Resin-filled permanent-magnet stepping motor |
| 06/20/1989 | US4841189 Stepper motor and method of making the same |
| 06/14/1989 | EP0319632A1 Electric motor with a multipolar permanent magnet rotor |
| 06/06/1989 | US4837493 System for driving drum |
| 05/16/1989 | US4831293 Low power, stepping motor with display |
| 05/10/1989 | EP0315419A2 Encapsulated stepper motor |
| 05/09/1989 | US4828360 Drive motor for camera lens assembly |
| 05/02/1989 | US4827164 Magnetically assisted stepping motor |
| 05/02/1989 | US4825983 Inertia damper |
| 04/25/1989 | US4825133 Electromechanical actuator control system |
| 04/25/1989 | US4825112 For supplying electric current |
| 04/18/1989 | US4823038 Stepping motor |
| 04/04/1989 | US4818911 Stator of electric motor |
| 03/29/1989 | CN1032015A Process for producing blue starch ball agent |
| 03/23/1989 | DE3730595A1 Stepping motor for unipolar drive |
| 03/14/1989 | US4812692 Motor |
| 02/08/1989 | CN1003269B Responsive stepper motor |
| 02/07/1989 | US4803389 Stepping motor, method of driving the same and drive circuit therefor |
| 01/26/1989 | WO1989000785A1 Magnetically enhanced stepping motor |
| 01/24/1989 | US4800306 Device for damping the oscillations of a stepping motor |
| 01/11/1989 | CN2030774U New-type electric driving means for bicycle |