Patents
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)
07/1981
07/28/1981US4281263 Hybrid stator and a two-axis induction electric motor constructed therewith
06/1981
06/30/1981US4276490 Brushless DC motor with rare-earth magnet rotor and segmented stator
06/26/1981EP0024429A4 Linear actuator.
06/16/1981US4274020 Synchronous linear motor
06/09/1981US4272226 Fluid pump and method for operating same
06/02/1981US4271367 Linear induction motor
05/1981
05/26/1981US4269493 Electromagnetic camera shutter control device
05/26/1981CA1101948A1 Linear induction drive system for accelerating and decelerating moving walkway
05/26/1981CA1101710A1 Epicyclic electromechanically actuated lens drive
05/12/1981US4267471 Linear induction motor
05/12/1981CA1101035A1 High performance stepper motor
04/1981
04/30/1981WO1981001223A1 Flat-coil actuator array for multi-head disk drive
04/29/1981EP0027724A1 Reversible motor
04/08/1981EP0026753A1 A method and a device for repeatedly applying a contact pressure of a predetermined magnitude
03/1981
03/31/1981US4259602 Electromagnetic linear-motion device
03/24/1981US4258278 Linear induction motor
03/18/1981EP0025297A1 Improvements in electrical machines
03/11/1981EP0024429A1 Linear actuator
03/10/1981US4255680 Linear induction motor
03/03/1981US4254350 Asynchronous line-fed motor
03/03/1981US4254349 Linear induction motor
02/1981
02/03/1981US4249114 Electromechanical energy converter
01/1981
01/28/1981EP0022788A1 Fluid pump and method for operating same
01/27/1981US4247794 Linear actuator
01/27/1981US4247793 Electric motor
01/27/1981US4246694 Method of making linear motor stator
01/07/1981EP0021965A1 Printer with linear motor
01/07/1981EP0020750A1 Stepper motor
01/06/1981US4243899 Linear motor with ring magnet and non-magnetizable end caps
01/06/1981CA1093134A1 Electromagnetic driving device
12/1980
12/30/1980CA1092662A1 Two-phase, sliding-field electromagnetic inductors
12/23/1980US4241268 Linear induction motor
12/23/1980US4240728 Photographic camera shutter electromagnetic system for controlling photographic light admitted to camera
12/16/1980US4239997 Linear induction motor
12/10/1980EP0020177A1 Fixed disc head actuator assembly
12/02/1980US4236455 Method and apparatus for generating linear electromagnetic travelling fields for driving and increasing the adhesive load of railway motored vehicles
11/1980
11/25/1980CA1090436A1 Armature rails and rail carrying arrangement for attraction type magnetically floated travelling body
11/25/1980CA1090404A1 Rotor for stepping motor
11/18/1980US4234831 Compound rotary and/or linear motor
11/18/1980US4233906 Linear induction motor with improved rail assembly
11/04/1980US4232237 Asynchronous line-fed motor
10/1980
10/28/1980CA1088642A1 Synchronous linear motor with subdivided field winding
10/14/1980US4228372 Linear induction motor
10/07/1980US4227100 Dual output force motor
09/1980
09/16/1980CA1085901A1 Electromagnetic induction actuator for magnetic disc file
09/04/1980WO1980001861A1 Linear actuator
09/02/1980US4220899 Polyphase linear motor
09/02/1980CA1084977A1 Linear motor
08/1980
08/05/1980US4216397 Linear induction motor
07/1980
07/29/1980US4215283 Linear stepping motor
07/10/1980WO1980001399A1 Fluid pump and method for operating same
07/08/1980US4211943 Linear induction motor
06/1980
06/26/1980WO1980001342A1 Stepper motor
06/25/1980EP0012555A1 Homopolar synchronous machines
06/24/1980US4209718 Linear induction motor
06/17/1980US4208596 Linear induction motor
06/17/1980CA1079784A1 Linear actuator
05/1980
05/28/1980EP0011395A1 A rotatably mounted member and an entertainment machine comprising such
05/28/1980EP0011149A1 Positioning device for magnetic heads
05/27/1980US4205243 Synchronous linear motor
04/1980
04/15/1980US4198582 High performance stepper motor
04/15/1980US4197933 Linear induction drive system for accelerating and decelerating moving walkway
04/08/1980US4197488 Electrical machine
04/01/1980CA1074880A1 Traction means with electrodynamic vehicle suspension for high-speed land transport
02/1980
02/26/1980US4190779 Step motors
02/12/1980US4188552 Garage door opener including a linear actuator
02/05/1980US4187453 Electric motor drive system
01/1980
01/09/1980EP0006669A1 Variable-reluctance electric machine
12/1979
12/25/1979US4180766 Reciprocating linear drive mechanism
12/18/1979CA1068320A1 Multi-actuator system using single magnetic circuit
11/1979
11/15/1979WO1979000951A1 Electric motor with very little rotor inertia and balanced cone motion
11/13/1979CA1066345A1 Linear piezoelectric actuator with liner controlling frictional wear
10/1979
10/31/1979EP0004995A1 Linear and rotary device
10/23/1979US4172229 High-power and high-speed prismatic linear motor
10/16/1979US4171493 Integral braking system for linear induction motor
10/02/1979CA1063723A1 Device for writing and/or reproducing information in respectively from a rotating disk-shaped record carrier
08/1979
08/28/1979CA1061394A1 Electromagnetic devices
08/21/1979CA1060934A1 Attachment of side covers to linear induction motor
07/1979
07/03/1979US4160268 Signal pickup device with tracking control and jitter compensation for a video disc
05/1979
05/01/1979US4152060 Epicyclic electromechanically actuated lens drive
05/01/1979CA1053646A1 Actuating device
04/1979
04/24/1979US4151447 Linear motor
04/17/1979US4149808 Linear drive for a printing apparatus
04/10/1979US4148260 High speed transit system
04/10/1979CA1052282A1 Turntable direct-drive system
03/1979
03/20/1979US4145725 Electromagnetic actuator
03/13/1979US4144466 Damping vibrations in voice coil actuator
03/07/1979EP0000982A1 Electromagnetically actuated lens drive
02/1979
02/27/1979US4142119 Rotary electric device
01/1979
01/30/1979US4136674 System for solar radiation energy collection and conversion
01/23/1979US4136293 Multi-actuator system using single magnetic circuit
01/02/1979US4132910 Linearly moving or rotated flat armature for motor and pulling magnets
12/1978
12/26/1978US4131828 Apparatus for rotatively driving a turn table
12/26/1978US4131813 Electromagnetic apparatus generating a gliding magnetic field
12/26/1978US4131812 Attachment of side covers to linear induction motor
12/26/1978US4131811 Traction means with electrodynamic vehicle suspension for high-speed land transport
11/1978
11/21/1978US4126797 Electromagnetic driving device
11/21/1978CA1042997A1 Linear induction motor assembly
11/07/1978CA1041948A1 Polyphase motor fields in conductor/non-conductor sorting systems
10/1978
10/31/1978US4123691 Electromagnetic devices
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