Patents for H01F 7 - Magnets (20,067)
11/1993
11/18/1993EP0569669A1 Double acting electromagnetic linear motor
11/18/1993EP0422228B1 Electromagnetic valve actuator
11/18/1993EP0406444B1 Electromagnetic valve actuator
11/17/1993CN2146771Y Power-saving fire-proof device for electromagnet and contactor
11/17/1993CN1078570A Deflecting magnetic dipole
11/16/1993US5261714 Electromagnetic pickup tool
11/11/1993WO1993022778A1 Cylinder type anisotropic magnets and their manufacturing methods and motors
11/11/1993WO1993022777A1 Method of producing anisotropic ferrite magnet, anisotropic ferrite magnet, hexagonal ferrite particles, and method for producing them
11/11/1993DE4215145A1 Linear control motor esp. as part of control or regulating valve - has control coils adjacent permanent magnets inside tubular housing with movable armature
11/10/1993EP0568866A1 Magnet system for needle selection in textile machines
11/09/1993US5259415 Magnetic valve
11/04/1993DE4214710A1 Electromagnetic actuator with differently excited armature segments - has valve ports opened selectively by withdrawal of actuating members against pressure of respective leaf springs
11/03/1993EP0568410A1 Solenoid valve with a substantially linear characteristic line
11/03/1993EP0568028A1 Electromagnetic linear motor
11/02/1993US5258737 Potentiometer
11/02/1993US5258735 Multi-pole composite magnet used in a magnetic encoder
11/02/1993US5257639 Electropneumatic positioner
10/1993
10/28/1993WO1993021645A1 Structured coil electromagnets for magnetic resonance imaging
10/28/1993WO1993021643A1 Magnetized material having enhanced magnetic pull strength and a process and apparatus for the multipolar magnetization of the material
10/28/1993WO1993021096A1 Yarn tensioning apparatus
10/28/1993DE4312610A1 Double electromagnet device for translatory valve movement - causes larger electromagnet to drive core of smaller one for valve opening, and then to be retracted allowing rapid reclosure of valve
10/28/1993CA2133462A1 Structured coil electromagnets for magnetic resonance imaging
10/27/1993EP0462131B1 Magnet system
10/27/1993CN2144853Y Permanent-magnet bar
10/26/1993US5257014 Actuator detection method and apparatus for an electromechanical actuator
10/26/1993US5256998 Actuator
10/26/1993US5256326 Dissolving polymer in solvent, dispersing magnetic powder therein, precipitating onto polymer powder
10/21/1993DE4212571A1 EM valve esp. for vehicular automatic transmission - has plunger composed of antimagnetic balls aligned with closure element in close-tolerance bore through magnetic core
10/19/1993US5255151 Electromagnet with momentary demagnetization
10/14/1993WO1993020568A1 Electromagnetic actuator for, in particular, a valve
10/13/1993EP0565363A1 Method for producing anisotropic rare earth magnet
10/13/1993EP0564794A1 Double acting electromagnetic actuator
10/13/1993CN2143818Y Magnetic synchronous conversion electromagnetic device
10/13/1993CN1077133A Magnetotherapy series special-shape magnet (magnetic piece)
10/12/1993US5252939 Low friction solenoid actuator and valve
10/12/1993US5252938 Solenoid with armature biased towards the rest position with two springs
10/12/1993US5252924 Magnetic field generating apparatus for MRI
10/12/1993US5251659 High speed miniature solenoid
10/12/1993US5251630 Pressure pulse generator having an electromagnetic pressure pulse source
10/12/1993US5251362 Magnetic latch
10/07/1993DE4310156A1 Coil device for use as solenoid - has slack portion at ends of wire reducing stress on heating expansion or contraction of coil body
10/07/1993DE4210740A1 Electromagnet with lifting armature - accelerates armature quicker with lower voltage due to smaller movable mass and larger active surface
10/06/1993CN1022359C Energy saving flash electromagnet
10/05/1993US5251091 Solenoid driving circuit for automatic transmission
10/05/1993US5250921 Field assembly for an electromagnet
10/05/1993US5249603 Proportional electro-hydraulic pressure control device
10/05/1993US5249338 Magnetic lock device
09/1993
09/30/1993WO1993019513A1 Electromagnetic actuator
09/30/1993WO1993018707A1 Magnetic field generator for mri
09/30/1993DE4307835A1 Precise timing circuit e.g. for diesel engine fuel injector electromagnets - retains holding current in coil by abrupt discharge of stored energy through short-circuiting transistor switch
09/29/1993EP0441862B1 Magnetic field generating assembly
09/29/1993CN1076807A 磁阻机 Reluctance Machine
09/29/1993CN1022268C Power saving speed adjusting and remanence erasure by torque type electromagnet
09/22/1993CN2142598Y Power-saving electromagnetic device
09/22/1993CN2142597Y Power-saving device for traction electromagnet
09/22/1993CN2142596Y Nd-Fe-B magnet for permanent magnet type nuclear magnetic resonance spectrometer
09/16/1993WO1993018572A1 Reluctance machine
09/16/1993DE4222737A1 Magnet coil with dipping armature e.g. for micro-wave oven - moves against force of lock spring to maintain stable position in varying field of magnetic coil.
09/15/1993EP0560657A1 Energy transmission device for a mechanical control, particularly to control the braking pressure in a brake
09/15/1993EP0560536A2 Method and apparatus for load voltage compensation
09/15/1993CN1076304A Divice for energy transmission for mechanical control
09/14/1993US5245501 Process and apparatus for controlling and measuring the movement of an armature of an electromagnetic switching member
09/11/1993CA2091237A1 Energy transmission of a mechanical control, especially for controlling the braking pressure of a brake system
09/07/1993US5243491 Electromagnetic support with current-independent characteristics
09/07/1993US5243313 Tractive magnet with asymmetric permanent air gap
09/02/1993WO1993017445A1 Producing magnetic fields in working gaps useful for irradiating a surface with atomic and molecular ions
09/01/1993EP0558362A1 Monophase electromagnetic rotary actuator with a movement between 60 and 120 degrees
09/01/1993EP0449961B1 Permanent magnet shaped to provide uniform biasing of a magnetoresistive reproduce head
09/01/1993EP0449852B1 Process and device for controlling and detecting the movement of an armature of an electromagnetic switching device
09/01/1993EP0409954B1 Magnetic field transfer device and method
09/01/1993EP0402359B1 Circuit arrangement for cyclic supply
09/01/1993EP0332614B1 Apparatus for air gapping the armature in a compound spool valve
09/01/1993CN2141591Y High-change magnetic field generator
08/1993
08/31/1993US5241292 Three position electrically operated actuator
08/31/1993US5241218 Armature movement detection circuit
08/31/1993US5240227 Electromagnetically operated valve
08/26/1993DE4205563A1 EM coil for valves with temp. compensating resistor - has sec. winding parallel to resistor arranged on body of main coil and driven in opposite sense
08/25/1993CN2141116Y Bistable trigger electromagnet
08/24/1993US5239277 Electromagnetic solenoid actuator
08/24/1993US5238770 Adding to rotating kiln containing magnets a mixture of carrier particles with polymer coatings
08/24/1993US5238202 Yarn tensioning apparatus
08/24/1993US5237872 Angular velocity sensor
08/19/1993DE4204029A1 Electromagnetic lifting and oscillating device e.g. for use in flat loudspeakers - has ferromagnetic core column with magnets either side which are surrounded by lifting and oscillating spool
08/18/1993EP0555370A1 Methods and applications for efficient genetic suppressor elements
08/17/1993US5237301 For magnetic separators
08/17/1993US5237300 Located in a cryostat
08/11/1993EP0555177A1 Electromagnetic valve
08/11/1993EP0554415A1 Electropneumatic positioner.
08/11/1993EP0309577B1 A method of making an integrally shielded mr magnet
08/11/1993CN2140100Y Magnetic synchronization comersion economizer coil
08/10/1993US5235303 Miniaturized universal electromagnet capable of operation in wide voltage range
08/10/1993US5235282 Magnetic resonance apparatus comprising a superconducting shielding magnet
08/10/1993US5234192 Rotational control device
08/05/1993WO1993015514A1 A compact superconducting magnet for magnetic resonance imaging
08/05/1993WO1993015326A1 Operating device
08/05/1993DE4202805A1 Generator for supplying DC to excitation coil of magnet e.g. of solenoid valve - supplies pulsed current at frequency such that armature stays in end position when coil is switched off between pulses due to remanence
08/03/1993US5232195 Flow regulating valve
07/1993
07/29/1993DE4201570A1 Stellvorrichtung Locking device
07/28/1993EP0552416A1 Direct current electromagnetic actuator
07/28/1993CN1074783A Magnetic synchrotrans electromagnetic device