Patents
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)
01/1998
01/06/1998US5705864 Stepping motor
12/1997
12/30/1997US5703419 Stepper motor with shortened axial length
12/24/1997WO1997049164A1 Stepping motor and method of manufacturing a yoke
12/23/1997US5701047 Electric fan motor
12/18/1997WO1997048173A1 Stepping motor and method for assembling the same
12/17/1997EP0813287A2 Switched reluctance motors
12/17/1997EP0812578A1 Motor/angle hand-piece assembly with a stepping motor
12/16/1997US5698920 Small electric motor
12/16/1997CA2036911C Energization coil device, a method of making such a device and an electromagnetic micromotor fitted therewith
12/11/1997WO1997047075A1 Piezoelectric linear step motor
12/11/1997WO1997047069A1 Stepping motor
12/11/1997DE19622809A1 Lifting and rotating device e.g. for special precision machines
12/10/1997EP0812054A2 Hybrid stepping motor
12/10/1997EP0811269A1 Two-phase motor, particularly a time piece motor or a motor for driving the hand of a display
12/10/1997EP0685121A4 Field weakening for a doubly salient motor with stator permanent magnets.
12/03/1997CN1166719A Motor and advancing device
12/03/1997CN1166718A Motor for use in information recording device
11/1997
11/25/1997US5691583 Stepping motor with internal power connections
11/18/1997US5689746 Optical apparatus
11/18/1997US5689145 Stator structure that removes metal particles from the stator structure
11/12/1997EP0806769A2 Motor for use in information recording device
11/11/1997US5686805 Repulsion motor
11/11/1997US5685062 Self-assembly fabrication method for planar micro-motor
11/05/1997CN1164142A Electromecanic transducer having multipolar permanent magnets
11/04/1997US5684349 Electromagnetic rotary actuator
10/1997
10/29/1997CN1163503A Hybrid-type stepping motor
10/22/1997EP0802607A1 Stepping motor
10/17/1997CA2202850A1 Dual-sectioned switched reluctance motor
10/15/1997EP0801462A1 Device generating three-phase position detecting signal with two coils
10/15/1997EP0801459A1 Motor and linear moving device
10/14/1997US5677581 Stepping motor with protruding pole teeth to increase detent torque
10/08/1997EP0800258A2 Hybrid-type stepping motor
10/07/1997US5674169 Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means
10/01/1997CN1036039C Hybrid stepping motor, driving method for the same and coil vinding method for the same
09/1997
09/17/1997CN1159673A Claw polar type step motor with one stator
09/16/1997US5668430 Dual-sectioned switched reluctance motor
09/10/1997EP0794359A2 Motor structure
09/03/1997CN1158513A Step motor
08/1997
08/20/1997EP0790540A1 Electromagnetic transductor with multipolar permanent magnets
08/13/1997CN1035645C Electromagnetic motor with two rotation senses particularly intended for timepiece
08/06/1997EP0788214A1 Motor structure
07/1997
07/16/1997EP0526660B1 Apparatus for controlling load numerically
07/15/1997US5648692 Stator yoke and method of producing same
07/08/1997US5646464 Planar micro-motor with bifilar micro-coils
07/03/1997WO1997023943A1 Two-phase motor, particularly a time piece motor or a motor for driving the hand of a display
07/03/1997DE19654227A1 Stepper motor e.g. for quartz clock drive motor or for motor vehicle EGR valve
06/1997
06/25/1997EP0780958A2 Hybrid-type stepping motor
06/25/1997EP0780956A1 Permanent magnet rotor for claw-pole stepping motor
06/12/1997WO1997021266A1 Low cost multi-pole motor constructions and methods of manufacture
06/04/1997EP0777314A2 Motor structure
06/04/1997EP0777313A2 Motor and electronic parts-mounting apparatus incorporating the motor
05/1997
05/21/1997EP0774824A1 Stepper motor
05/06/1997US5627424 Twin bobbin four pole motors and methods for making same
05/06/1997US5627418 Combined linear-rotary stepping motor
04/1997
04/29/1997US5625239 Method and apparatus for sensing relative position between two relatively rotatable members using concentric rings
04/24/1997WO1997015108A1 Staggered pole switched reluctance motor
04/24/1997DE19539138A1 Motor with two stator windings especially for vehicular instrumentation
04/23/1997EP0769841A2 Electromotor and measuring device, in particular for indicating instrument in vehicle
04/17/1997WO1997014209A1 Electrical machines having compensated field reaction
04/16/1997CN1147719A Motor structure
04/16/1997CN1147717A Multipolar motor with two rotors
04/10/1997WO1997013317A1 Device generating three-phase position detecting signal with two coils
04/02/1997EP0766271A1 Magnetic attraction driving engine using permanent magnet
04/02/1997CN2251221Y Linear step electric machine
03/1997
03/26/1997EP0764780A2 Flow quantity valve controller and manufacturing method for flow quantity valve
03/26/1997EP0656157B1 Electric fan motor
03/19/1997EP0763880A1 Electrical machine
03/12/1997EP0762618A1 Electrical machine
03/11/1997US5610782 Floppy disk drive device
03/11/1997US5610492 Method and apparatus for induced pole stepper motor
02/1997
02/19/1997EP0758814A1 Hybrid stepping motor
01/1997
01/28/1997US5598046 Stepping motor with different sized or missing teeth
01/22/1997CN2245827Y Deceleration claw type stepping motor
01/22/1997CN1033883C Polyphase electromagnetic transducer having a multipolar permanent magnet
01/16/1997WO1997001882A1 Axial field motor with stationary coil about a central rotor
01/15/1997EP0753932A2 Motor structure
01/15/1997EP0753927A2 Claw pole type synchronous motor
01/15/1997CN1033836C Miniature motor
01/07/1997US5592037 Analog display device with micro-motor drive means
01/02/1997DE19624655A1 Stepper motor e.g. for directly driving robot hand finger linkage without reducing mechanism
12/1996
12/17/1996US5585680 Electromagnetic stepper motor
12/11/1996EP0748032A2 Motor structure
12/05/1996WO1996038904A1 Electromagnetic actuator magnetically locked into two or more stable positions
12/05/1996WO1996038903A1 A self-starting brushless electric motor
12/04/1996EP0746084A1 Multipolar two-rotor motor
11/1996
11/26/1996US5579290 Epicycloidal step motor
11/07/1996WO1996035255A1 Low-cost synchronous or stepper motor
11/05/1996US5572270 Optical apparatus having a motor control device
10/1996
10/31/1996DE19616798A1 Stepping motor with reduced axial length
10/30/1996EP0740399A1 a stepping motor
10/23/1996EP0616739B1 Doubly salient reluctance machines
10/23/1996CN1033120C Electromagnetic transducer with multipolar permanent magnet
10/22/1996US5567999 Bobbin structure for electromagnetic coil assembly
10/03/1996WO1996030993A1 Stepping motor
09/1996
09/25/1996EP0733279A1 Repulsion motor
09/25/1996CN1131840A Polyphase multipolar stepping motor
09/18/1996CN1131355A Small electric motor
09/10/1996US5554903 Rotary electric machine
08/1996
08/28/1996EP0608424B1 Rotary electric machine
08/28/1996CN1129861A Epicycloidal step motor
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