Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 7 - Magnets
Patents for H01F 7 - Magnets (20,067)
12/1991
12/27/1991EP0462683A1 Electromechanical positioning device with two well-defined end positions
12/27/1991EP0462131A1 Magnet system.
12/25/1991CN1057329A Cryostat with liquefaction refrigerator
12/24/1991US5075662 Enhanced magnetic field within enclosed annular cavity
12/24/1991US5075584 Electromagnetic solenoid valve with variable force motor
12/24/1991US5074687 Armature of an electromagnet-coil/armature system for dot matrix print heads, and method of manufacturing same
12/24/1991US5074326 Adjustable plunger system for a universal solenoid for fluid control valves
12/18/1991EP0461490A1 Torque motor with rotor pole pieces
12/17/1991CA1293208C Clutch mechanism
12/12/1991WO1991019302A1 Automated method for the manufacture of transponder devices
12/11/1991EP0460895A2 Gradient speed-up circuit for NMR apparatus
12/11/1991EP0460894A2 Gradient speed-up circuit for NMR system
12/11/1991EP0460666A1 Electrically activated vehicle rearview mirror
12/11/1991EP0460130A1 Dual current sensing driver circuit
12/10/1991US5072204 Dipole for magnetic field compensation
12/10/1991US5072146 Magnetic bearings coil heat removal
12/10/1991US5071267 Actuation magnet for a printing stylus of a matrix printer
12/10/1991US5070826 Electromagnetic valve actuating system
12/10/1991CA1293010C Polarized electromagnet
12/04/1991EP0459889A1 Voice coil type actuator
12/04/1991EP0459268A2 Actively screened magnet
12/04/1991CN1056765A Solenoid assembly
12/04/1991CN1056761A Amplification same direction electromagnetic force collision-repulsion safe method
12/03/1991US5069834 Method of manufacturing an electromagnetically actuatable valve
12/03/1991US5069422 Electromagnetic force valve driving apparatus
11/1991
11/28/1991DE4016939A1 Reversible magnetic fastening of floor and wall coverings - involves magnetic coatings or films added to back of carpet or hanging and to surfaces covered
11/28/1991DE4016816A1 EM valve with spring-centred control slider adjustment - provides for temporary energisation of opposite electromagnet as buffer against slider over=run beyond middle position
11/27/1991EP0458295A2 Voice coil type actuator
11/27/1991CN1014942B Permanent-magnet with large air-gap and high uniformity
11/26/1991US5068860 Helical wiggler device with permanent magnets for application to free electron lasers
11/20/1991CN2089199U Permanent magnet for rotating rare-earth permanent magnet lifting
11/19/1991US5066980 Solenoid plunger magnet and its use as print hammer in a print hammer device
11/19/1991CA1292196C Electromagnetic clutch mechanism
11/14/1991WO1991017071A1 Control element
11/13/1991EP0455921A1 Magnet to be assembled with an injected plastic material
11/13/1991CN1056182A Highly efficient power saving electromagnetic mechanism
11/12/1991US5065126 Linear actuator
11/12/1991US5064159 Article holder utilizing magnetostatic interaction
11/12/1991US5063934 Permanent magnet arrangement
11/07/1991DE4014313A1 Operation characteristics setter for ABS braking system
11/05/1991USRE33736 Periodic permanent magnet structure with increased useful field
11/05/1991US5063368 Magnetic assembly for enhancing fuel combustion
11/05/1991US5063349 Transformer-coupled gradient speed-up circuit
10/1991
10/31/1991WO1991016765A1 Switch for inductive loads
10/30/1991EP0454251A1 Quadrature coil construction
10/30/1991CN2087809U Permanent magnet with single-side magnetic field strength
10/24/1991DE4012353A1 Transistor circuit for operation of two electromagnetic valves
10/23/1991EP0452562A1 Circuit for actuating two electromagnetic valves
10/23/1991EP0452369A1 Deposited permanent magnet for hard and easy axes biasing of a magnetoresistive head.
10/23/1991CN2087376U Magnetic maintaining type electric magnet and controlled circuit
10/22/1991US5059839 Explosive magnetic field compression generator transformer power supply for high resistive loads
10/22/1991CA1291175C Dynamic energy absorber
10/19/1991CA2014975A1 Resin bound magnet and its production process
10/17/1991WO1991015777A1 Process for monitoring faults in inductive loads
10/16/1991CN1014352B 电磁阀 Solenoid valve
10/15/1991US5057777 Quadrature coil construction
10/10/1991DE4011217A1 Controlling magnetic-valve in antilocking braking system - ascertaining function of valve by tapping voltage of transistor setting current flow through solenoid
10/09/1991EP0450971A2 Superconductive magnet
10/09/1991EP0449961A1 Permanent magnet shaped to provide uniform biasing of a magnetoresistive reproduce head.
10/09/1991EP0449852A1 Process and device for controlling and detecting the movement of an armature of an electromagnetic switching device.
10/09/1991CN1055265A Non-contact-guidable magnetic floating device
10/08/1991US5055812 Compensation for magnetic nonuniformities of permanent magnet structures
10/08/1991US5055727 Rotary drive mechanism
10/08/1991CA1290379C Arrangement for edgewise wound pole winding
10/07/1991CA2034350A1 Axial thermal shield support for a mr magnet
10/02/1991EP0448861A1 Semiconductor integrated circuit device
10/02/1991DE4010198A1 Verfahren zum ueberwachen von induktiven lasten auf fehler A method for inductive loads to supervise error
10/01/1991US5053911 Solenoid closure detection
10/01/1991US5052697 Sealing member for ferrofluid seal and method of producing the same
09/1991
09/27/1991WO1991015051A1 Electromagnetic actuator
09/26/1991DE4009069A1 Flat permanent magnet for therapeutic application - has heat-storing layer on side applied to patient's body
09/25/1991EP0448323A1 Non-contact-guidable magnetic floating device
09/25/1991EP0448219A1 Transmission system solenoid controlled actuator fault detection system and method
09/24/1991US5050891 Sealing member for ferrofluid seal
09/24/1991US5050840 Electromagnet for solenoid valves and method of manufacturing same
09/24/1991US5050292 Automated method for the manufacture of transponder devices by winding around a bobbin
09/19/1991WO1991011605A3 Electromagnetically operated valve
09/18/1991EP0446496A2 Shielded magnetizing device and angular rate sensor in which such a device is used
09/17/1991US5049848 High field strength magnet, preferably having remote shimming of field
09/17/1991US5049053 Metal mold for molding anisotropic permanent magnets
09/17/1991CA1289181C Solenoid operated fluid control valve with vibration damping material
09/17/1991CA1289007C Magnetic cylinders with image plate or blanket for offset printing
09/11/1991EP0446075A2 A converged magnetic flux type electro-magnetic pump
09/11/1991EP0445441A1 Angular rate sensor
09/11/1991EP0445132A1 Solenoid shock absorbing bumper arrangement and method
09/11/1991CN1054497A Electromagnetic simulated muscle made of plastic and flexible magnet
09/10/1991US5047745 Laminations
09/10/1991US5047743 Integrated magnetic element
09/10/1991US5046745 Constant volume protective boot
09/10/1991US5046702 Solenoid device
09/10/1991CA1288806C Method for homogenizing a static magnetic field over an arbitrary volume
09/10/1991CA1288796C Permanent magnet assembly and method of making same
09/05/1991WO1991013449A1 Terminations of cylindrical permanent magnets
09/04/1991EP0444099A1 Prevention of condensation on a mirror
09/04/1991EP0444055A1 Solenoid valve, in particular for fuel injection pumps.
09/04/1991CN1013814B Electrical device with overheat protection
09/03/1991US5045794 Method of optimizing passive shim placement in magnetic resonance magnets
09/03/1991US5045766 Excitation device for electromagnetic actuator
09/03/1991US5045735 Device comprising an actuator, method for use in the device, and system for controlling a gas or liquid flow, comprising the device
09/02/1991CA2036752A1 Solenoid actuator having a magnetic flux sensor
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