Patents for H02K 41 - Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path (10,066) |
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09/06/1989 | EP0331463A1 Improvements in electric machines |
09/05/1989 | US4864170 Linear motor |
09/05/1989 | US4864169 Polyphase variable reluctance motor |
09/05/1989 | US4863240 Apparatus for actuating objective lens |
08/29/1989 | US4860430 Completing a linear motor stator |
08/22/1989 | US4860183 Planar linear pulse motor |
08/22/1989 | US4859974 Electromagnetic motor/actuator |
08/22/1989 | US4859885 Winding for linear pump |
08/22/1989 | US4858452 Automobile power door lock |
08/16/1989 | EP0327538A1 Fluid circulated linear motor for robotic systems |
08/15/1989 | US4857786 Structure of stepping motor and method of driving the stepping motor |
08/15/1989 | US4857782 Step motor |
08/15/1989 | US4857781 High-speed non-contact linear motor with magnetic levitation |
08/02/1989 | EP0326374A2 A moving coil linear motor |
08/02/1989 | CN2042255U Special planar linear motor |
08/01/1989 | US4853808 Linear actuator for disc drive |
07/26/1989 | CN1034284A Disk drive having improved linear actuator |
07/18/1989 | US4849664 Linear motor car system |
07/18/1989 | US4848242 Linear induction propelled track guided runner |
07/04/1989 | US4845699 Electric mechanical transducer and optical type pickup apparatus driven by a magnetic field |
07/04/1989 | CA1256993A1 Device for translating a slide and electrodynamic apparatus comprising said device |
06/13/1989 | US4839545 Cooling system for linear motor |
06/13/1989 | US4839544 Apparatus for driving a curtain |
06/13/1989 | US4839543 Linear motor |
06/13/1989 | US4838146 Fluid pressure actuator with anti-rotation slide attached to piston rod |
06/13/1989 | CA1255764A1 Reaction rail for linear induction motor |
06/07/1989 | EP0319096A2 Linear motor with angularly indexed magnetic poles |
06/07/1989 | EP0318484A1 System for using synchronous secondaries of a linear motor to biaxially draw plastic films. |
06/06/1989 | US4837470 Magnetically driven nutating motor |
06/06/1989 | US4837467 Linear motor with angularly indexed magnetic poles |
05/31/1989 | EP0317787A1 Device for carrying out the readying movement of a work piece towards a work station |
05/30/1989 | US4835429 Flexible printed cable connected to an inner most end of motor coil |
05/30/1989 | US4835424 Platen laminated in mutually perpendicular direction for use with linear motors and the like |
05/30/1989 | US4834353 Linear motor with magnetic bearing preload |
05/24/1989 | CN2038299U Explosion-proof cylindrical d.c. generator |
05/23/1989 | US4833351 Muliple axis actuator |
05/16/1989 | US4831291 Differentially wound electromagnetic actuator |
05/16/1989 | US4831290 Linear unit for handling equipment |
05/10/1989 | EP0314899A2 Method and apparatus for introducing a winding into the inductor of a linear motor |
05/02/1989 | US4827164 Magnetically assisted stepping motor |
05/02/1989 | US4827162 Controlled drag for magnet actuator |
05/02/1989 | US4825984 Visco-elastic couple for magnet actuator |
05/02/1989 | CA1253559A1 Bi-axial supporting arrangement |
04/25/1989 | US4825111 Linear motor propulsion system |
04/11/1989 | US4819564 Linear motor driven conveying installation and braking device therefor |
04/04/1989 | US4817930 Guiding device |
03/29/1989 | CN2035156U Lamination type tubular straight-line induction motor |
03/28/1989 | US4815949 In-well submersible motor with stacked component stator |
03/15/1989 | CN1031782A Non-contacting linear drive |
03/14/1989 | US4813033 Two axis electromagnetic actuator with axis balanced suspension |
03/14/1989 | US4812934 Actuator for memory storage device |
03/14/1989 | US4812795 Electromagnetic devices having selectively movable core winding |
03/14/1989 | CA1251029A1 Method of manufacturing electromagnetic members |
03/09/1989 | WO1989002184A1 Contact-free linear drive |
03/08/1989 | EP0305685A1 Linear drive without contact |
03/08/1989 | EP0305474A1 Voice coil linear actuator. |
03/07/1989 | US4811320 Optical type pickup apparatus with lens holder supported by frame wires each having an end inserted into a frame hole |
03/07/1989 | US4810914 Linear actuator with multiple closed loop flux paths essentially orthogonal to its axis |
03/07/1989 | CA1250913A1 Driving system for linear vehicles |
02/28/1989 | US4808892 Bi-directional drive motor system |
02/23/1989 | WO1989001725A1 Apparatus for producing controlled movement |
02/07/1989 | US4803388 Linear motor |
02/07/1989 | US4803387 Linear belt motor |
02/02/1989 | EP0266397A4 High speed precision drilling system. |
02/01/1989 | EP0301164A2 Electrical drive or generator |
01/31/1989 | US4801829 Electromagnetic motor without mechanical motion converter |
01/31/1989 | US4800818 Linear motor-driven conveyor means |
01/25/1989 | EP0300126A1 Vehicle with internal combustion motor, generator and electrical drive motor |
01/25/1989 | EP0300125A1 Electrical drive or generator |
01/25/1989 | EP0300124A1 Electrical drive or generator |
01/25/1989 | EP0300123A1 Electrical drive or generator |
01/18/1989 | EP0299137A1 Electrical drive or generator |
01/17/1989 | US4798985 Linear motor with air-lift bearing unloading |
01/11/1989 | EP0298194A2 Electrical drive |
01/04/1989 | EP0297552A2 Composite structures and methods of manufacturing the same |
01/04/1989 | EP0297532A1 Linear pulse motor |
01/03/1989 | US4795928 Linear actuator assembly for accessing a magnetic memory disc |
12/29/1988 | WO1988010188A1 System for using synchronous secondaries of a linear motor to biaxially draw plastic films |
12/27/1988 | US4794293 Direct current electric motor |
12/27/1988 | US4794287 Linear motor |
12/27/1988 | US4794286 Variable reluctance stepper motor |
12/27/1988 | US4794284 Linear D.C. motor with non-ferrous stator core |
12/20/1988 | US4792935 Objective lens driving device with multipole magnet |
12/20/1988 | US4792707 Disk tracking device |
12/20/1988 | CA1247184A1 Heteropolar magnet |
12/14/1988 | EP0294541A1 Electrical drive or generator |
12/13/1988 | US4790628 Apparatus for actuating objective lens |
12/06/1988 | US4789815 Linear motor |
12/06/1988 | CA1246214A1 Moving magnet disc drive actuator |
11/29/1988 | US4788477 Linear motor-driven X-Y table |
11/23/1988 | EP0291638A2 Linear actuator |
11/22/1988 | US4786832 Supporting mechanism for a movable member of linear pulse motors |
11/17/1988 | EP0291119A1 Guiding device |
11/15/1988 | US4785210 Linear motor |
11/15/1988 | US4785138 Electric cable for use as phase winding for linear motors |
11/02/1988 | CN88102802A Self-levitating type dc linear motor |
10/19/1988 | CN88201010U Dc reciprocating linear motor |
10/12/1988 | CN87205348U Cylindrical linear motor with insulated spacing collars |
10/04/1988 | US4775908 Moving magnet actuator |
09/27/1988 | US4774447 Linear motor-driven table apparatus capable of operating both in fine-feed and large-feed modes |