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)
05/1998
05/20/1998EP0842890A1 Cranes with traversable trolleys
05/20/1998DE19645873A1 Arrangement for monitoring the reference position of a rotor of a planar stepper motor
05/20/1998CN1182506A Linear motor
05/20/1998CN1182301A Energy conversion device using permanent magnets
05/20/1998CN1182043A Elevator car door system
05/13/1998EP0841293A1 Optimization of magnetizing current in linear induction motors
05/13/1998EP0841290A1 Linear induction motor for driving elevator car doors
05/13/1998EP0841287A1 Secondary guidance system for linear induction motor
05/13/1998EP0841286A1 Linear induction motor door operator
05/13/1998EP0841285A1 Elevator car door system
05/12/1998US5751089 Brushless DC motors/generators
05/12/1998US5751077 Fluid-cooled linear motor armature
05/12/1998US5751076 Drive system for lifts
05/12/1998US5751075 Magnet assembly for linear motor
05/07/1998WO1998019386A1 Two-wire brushless dc motor control system
05/07/1998DE19650360A1 Drive unit for machine tool
05/06/1998EP0840309A2 Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
05/06/1998EP0840301A2 Isolation apparatus for use in disc drive system to mitigate effects of undesired mechanical forces and disc drive system including same
05/06/1998EP0840300A2 Optical disc system having improved circuitry for performing blank sector check on readable disc and method for operating same
05/06/1998CN1038289C 线性马达 Linear motors
05/05/1998US5748578 Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
05/05/1998US5748410 Slotted flex circuit for a disk drive actuator
05/05/1998US5747952 Linear motor, apparatus, armature coil current supply circuit for linear motor, and method of supplying current to armature coil of linear motor
05/05/1998US5747780 Apparatus for conveying and processing a wafer in a physically contact-free state
05/05/1998CA2078870C Electromagnetic actuator
05/04/1998CA2211821A1 Swing system for a surface mining shovel
04/1998
04/30/1998WO1998018195A1 Linear drive and process for manufacturing a passive unit for a linear drive, and device for carrying out the process
04/30/1998WO1998018194A1 Linear drive with a modular design and process for manufacturing an active unit for such a linear drive
04/30/1998WO1998018193A1 Modular direct driving device and method for manufacturing an active component of same
04/30/1998WO1998018192A1 Method for logging a mobile terminal into a wireless communications system
04/30/1998WO1998018068A1 Regulating unit for a multiphase direct drive and method of modulating such a drive
04/30/1998WO1998018067A1 Regulating unit for a multiphase direct drive and process for controlling such a drive
04/30/1998DE19643521A1 Linearantrieb in Modulbauweise und Verfahren zur Herstellung einer Aktiveinheit eines solchen Linearantriebs Linear drive of modular construction and method for producing an activated unit of such a linear drive
04/29/1998EP0838891A1 Energy conversion device using permanent magnets
04/29/1998EP0838811A2 Analog to digital converter and assembly to normalize servo error signals and multiplex reference voltage inputs and digital outputs and optical drive system including same
04/29/1998EP0838281A1 Device for transferring workpieces between processing stations
04/29/1998EP0625031B1 360 degrees rotational and locking system for a pre-angled stump in an oral implantation
04/28/1998US5744888 Multiphase and multipole electrical machine
04/28/1998US5744879 Synchronous linear motor
04/23/1998DE19748647A1 Electromagnetic drive system with integral travel signal generation
04/23/1998DE19643519A1 Regeleinheit für einen mehrphasigen Direktantrieb und Verfahren zur Ansteuerung eines solchen Antriebes Control unit for a multi-phase direct drive and method for controlling such a drive
04/23/1998DE19641879A1 Setting drive for machining, handling or measuring machine
04/21/1998US5742136 For detecting movements of a slider of a linear pulse motor
04/21/1998US5742106 Thermo-sensitive actuator and idle speed controller employing the same
04/14/1998US5739975 Memory storage module for staring and accessing magnetically encoded data on linear tracks
04/14/1998US5739608 Actuator for optical pickup
03/1998
03/31/1998US5732938 Actuation apparatus
03/25/1998EP0830726A1 Electromagnetic actuator
03/25/1998CN1177425A Electric machine
03/24/1998US5731896 Microscope
03/24/1998US5731642 Magnetic circuit structure in rotary actuator
03/24/1998CA2127989C Ferromagnetic wire electromagnetic actuator
03/24/1998CA2109700C Electromagnetic actuator
03/18/1998EP0829952A2 Colpitts type oscillator having reduced ringing and optical disc system utilizing same
03/18/1998EP0829887A2 Magnetic actuator with long travel in one direction
03/18/1998EP0829869A2 Optical disc system having a current monitoring circuit for a magnetic bias coil and a controller for a laser driver and method for operating same
03/18/1998EP0829861A2 Servo control system for information storage device
03/18/1998EP0829860A2 Focus capture method for optical disc system using detection of Quad Sum signal
03/18/1998EP0829859A2 Optical disc system including focus capture assembly with focus error signal circuit and method for operating same
03/18/1998EP0829858A2 Optical disc system having servo motor and servo error detection assembly operated relative to monitored Quad Sum signal
03/17/1998US5729511 Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
03/17/1998US5729067 Method and apparatus for closed loop position control in a linear motor system
03/12/1998CA2189408A1 Magnetic actuator with long travel in one direction
03/10/1998US5726542 Stage apparatus
03/10/1998US5726508 Linear voice coil retractor
03/03/1998US5723928 Induction motor and method of adjusting power factor of the same
03/03/1998US5723917 Flat linear motor
03/03/1998US5722930 Reciprocating pump circulatory assist arrangement
03/03/1998US5722429 Connecting arrangement for medical device
02/1998
02/19/1998WO1998007228A1 Linear motor with improved coil design and heat removal
02/18/1998CN1173762A Linear motor
02/12/1998WO1998006166A1 Stator plate of a linear electric direct drive
02/12/1998WO1997040573A3 Coil body for a direct drive, its process of production and core lamination for the coil body
02/10/1998US5717261 For a high speed ground transportation vehicle
02/10/1998US5717260 Rotor for a cylindrical linear motor
02/10/1998US5716461 Functionally gradient permanent magnet actuators
02/10/1998US5715590 Apparatus for making a slotless electric motor or transducer
02/05/1998DE19727344A1 Linearstellglied Linear actuator
02/05/1998DE19632399A1 Electro-mechanical transducer e.g. as AC or DC motor/generator
02/05/1998DE19631106A1 Statorplatte oder Statorelement A stator plate or stator element
02/04/1998EP0821596A1 Sealless rotary blood pump with passive magnetic radial bearings and blood immersed axial bearings
02/04/1998CN1037308C Tubular linear motor primary element
02/03/1998US5713136 Object measuring apparatus
01/1998
01/28/1998EP0820654A1 Linear motor
01/27/1998US5712516 Stator-element for a linear-electrical-drive door provided with a stator-element as such
01/22/1998DE19643518A1 Linear drive with active unit and passive unit also guide and control units e.g. for precision engineering
01/21/1998EP0819334A1 Pressurized air-gap guided active linear motor suspension system
01/15/1998WO1998001674A1 Linear compressor motor
12/1997
12/30/1997US5703422 Magnetic eccentric motion motor
12/30/1997US5703420 Moving magnet type multi-phase linear motor with vibration suppression and coil cooling means
12/30/1997US5703418 DC cooled linear motor
12/30/1997US5703417 Linear motor for extended travel
12/30/1997US5702430 Surgically implantable power supply
12/23/1997US5701042 Linear direct current motor
12/23/1997US5701039 Electromechanical transducing
12/17/1997EP0813288A1 Segmented armature winding for DC electric machine
12/17/1997EP0723717B1 Electromagnetic actuator having a cylindrical translation coil and a toroidal rotation coil, actuator unit comprising the actuator and a measurement system, and machine comprising the actuator or the actuator unit
12/16/1997US5698911 Voice coil motor
12/16/1997US5698910 Electromagnetic actuator with position sensor
12/11/1997DE19622809A1 Lifting and rotating device e.g. for special precision machines
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