Patents for H01F 7 - Magnets (20,067)
08/1989
08/09/1989EP0326781A1 Printer drive
08/09/1989EP0326572A1 Cylindrical permanent magnet with longitudinal induced field.
08/09/1989EP0205469B1 Regulation of a magnet field
08/08/1989US4855703 Multilayered-eddy-current type strong magnetic field generator
08/08/1989US4855702 Linear electromagnetic actuator
08/08/1989US4855700 Dual conversion force motor
08/08/1989US4855680 Enhanced decoupling of MRI RF coil pairs during RF tuning of MRI RF transmit coil
08/08/1989US4854282 Device for securing control magnets on injection pumps for diesel fuel
08/08/1989CA1258246A1 Electromagnetic hammer actuator for impact printer
08/02/1989EP0326088A2 Neodymium-boron-iron magnet assembly and method of making same
08/01/1989US4853663 Passive shims for correction of (3,2) and (3,-2) harmonic terms in magnetic resonance magnets
08/01/1989US4852490 Magnetic cylinder having rigid support for magnet cover
07/1989
07/26/1989EP0325351A2 Switchable MRI RF coil array with individual coils having different and overlapping fields of view
07/26/1989EP0325313A1 Apparatus for generating a magnetic field in a processing space
07/26/1989EP0324797A1 Nuclear magnetic resonance imaging system
07/25/1989US4851959 Solenoid engagement sensing circuit
07/25/1989US4851800 Electrical stop control for musical instruments and action magnet therefor
07/25/1989US4851180 Magnetic coil arrangement for fusion reactors
07/25/1989US4850724 Control circuit for dot matrix printing head
07/19/1989EP0324423A2 Electromagnetic control device for cameras
07/18/1989US4849727 Magnetic shield for a magnetic resonance magnet
07/18/1989US4847985 Method for making a gradient coil
07/18/1989CA1257644A1 Axisymmetric correction coil system for nmr magnets
07/18/1989CA1257517A1 Electromagnetic injection valve
07/13/1989DE3804011C1 Solenoid valve arrangement
07/12/1989EP0323533A1 A method and apparatus for electromagnetically controlling the rotation of a movable element around its axis
07/11/1989US4847726 Magnetic actuator
07/11/1989US4847582 Magnetic gripping apparatus
07/11/1989US4847581 Dual conversion force motor
07/11/1989US4847579 Ferromagnetic resonator
07/11/1989US4845837 Method of making permanent magnet assembly
07/05/1989EP0323378A2 Oscillating mirror arrangement for the deviation of electromagnetic radiation
07/05/1989EP0322985A1 Solenoid operated valve apparatus
07/05/1989CN1033681A 电磁阀芯 Solenoid valve
07/04/1989US4845699 Electric mechanical transducer and optical type pickup apparatus driven by a magnetic field
07/04/1989US4845451 Electromagnet
07/04/1989US4845392 Hybrid linear actuator
07/04/1989US4844339 Fuel injection apparatus
07/04/1989CA1256927A1 Bi- or monostable operation polarized electromagnet
06/1989
06/29/1989WO1989006063A1 Electric motor with stop with magnetic locking and thermal flap for spatial vehicle controlled by such a motor
06/28/1989EP0322318A1 Electric motor having a stop member with magnetic locking, and thermal flap for a spacecraft controlled by such a motor
06/27/1989US4843361 Electromagnet with permanent magnet held by a cage
06/22/1989DE3805704C1 Electromagnetic single-surface brake
06/21/1989EP0320861A2 Oxidation resistant compositions for use with rare earth magnets
06/21/1989EP0214186A4 Cylindrical gradient core set for an nmr imaging system.
06/21/1989CN2039871U Power saving device for electromagnet
06/20/1989US4841407 Magnetic field generator having a plurality of coils for generating magnetic field in substantially the same space and method of driving the same
06/20/1989US4841267 Deflection apparatus for cathode ray tube
06/20/1989US4840700 Current streamline method for coil construction
06/20/1989US4840417 Movable yoke-type lifting magnet device
06/20/1989US4840163 Electromagnet, valve assembly and fuel metering apparatus
06/14/1989EP0320285A1 Improvements in or relating to electrical coils
06/13/1989US4839621 Electromagnetic actuator having improved dampening means
06/13/1989US4839620 Solenoid actuated control cable
06/13/1989US4839059 Compact, periodic, permanent magnet with high flux and minimal leakage; apertures, truncation
06/13/1989US4838517 Pressure control valve
06/07/1989EP0179911B1 Electromagnetic actuator apparatus
06/06/1989US4837542 Hollow substantially hemispherical permanent magnet high-field flux source for producing a uniform high field
06/06/1989US4837109 Mixing calcium or its hydride, neodymium fluoride, iron, boron, and flux; melting to reduce
06/06/1989CA1255407A1 Telephone line interface option module
05/1989
05/31/1989EP0318257A2 Coil arrangements for magnetic resonance apparatus
05/31/1989EP0318177A1 Moulded product
05/31/1989EP0318131A1 Method and assembly for producing extruded permanent magnet articles
05/31/1989EP0317853A1 Magnet assembly for a nuclear spin tomography apparatus with superconducting main-field coils and normally conducting gradient coils
05/31/1989EP0317775A2 Balanced self-shielded gradient coils
05/30/1989US4835655 Power recovery circuit
05/30/1989US4835506 Hollow substantially hemispherical permanent magnet high-field flux source
05/30/1989US4835505 Magnetic ring for detecting the rotation of an object
05/30/1989US4835504 Block for correcting magnetic-field homogeneity and a magnet fitted with blocks of this type
05/30/1989US4835503 Linear proportional solenoid
05/30/1989US4835425 Linear motor
05/30/1989US4835137 Periodic permanent magnet structures
05/30/1989US4834295 Fuel atomisation and metering valve for a fuel injection device of an internal combustion engine
05/30/1989US4833980 High efficiency coil posts for print hammer actuators
05/30/1989US4833773 Method for making search coil assembly for metal detectors
05/24/1989EP0317365A2 Solenoid valve control circuit
05/24/1989EP0158643B1 Electromagnetically operated hydraulic valve device with snap-together valve housing
05/23/1989US4833410 System of coils for producing magnetic field gradients of very uniform polarization in an imaging or spectroscopy installation by NMR
05/23/1989US4833352 Linear inductive transducer
05/23/1989US4833351 Muliple axis actuator
05/23/1989CA1254618A1 Magnetic resonance imaging apparatus including a bird- cage r.f. coil
05/17/1989CN2037864U Coil type electromagnet for power-failure self-protection
05/16/1989US4831351 Periodic permanent magnet structures
05/16/1989US4830286 Electromagnetically actuatable valve
05/16/1989US4829947 Variable lift operation of bistable electromechanical poppet valve actuator
05/16/1989CA1254257A1 Solenoid construction and method for making the same
05/11/1989DE3836513A1 Electromagnetic control device
05/11/1989DE3737133A1 Homogeneous field magnet with profiled pole plates
05/10/1989EP0315382A2 Enhanced decoupling of MRI RF coil pairs during tuning of MRI RF transmit coil
05/09/1989US4829277 Ring comprising segments
05/09/1989US4829276 Optimal periodic permanent magnet structure for electron beam focusing tubes
05/09/1989US4829275 Method and means for providing consistent operation of a solenoid actuator
05/05/1989WO1989004049A1 Magnet assembly
05/02/1989US4827236 Apparatus for simultaneously generating an intense toroidal magnetic field and an intense poloidal magnetic field quasi-stationarily in time
05/02/1989US4827235 Magnetic field generator useful for a magnetic resonance imaging instrument
05/02/1989US4827230 Magnet design for ferromagnetic resonators
05/02/1989US4826130 High-speed solenoid valve with polymer film lubricant
05/02/1989US4825526 Magnetic fastener
05/02/1989CA1253539A1 Polarized electromagnetic actuator device
04/1989
04/25/1989US4825160 Method and device for MR tomography