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)
08/1991
08/28/1991EP0443647A1 Hot-worked rare earth-iron-carbon magnets
08/28/1991CN2083656U Brake electronic energy-saving coil
08/22/1991WO1991012618A1 A method and an arrangement to produce more than one pull-/push position at pull-/push magnets
08/22/1991DE4005044A1 Linear drive for adjusting vehicle wing mirror - uses EM coil and cooperating permanent magnet armature associated with relatively movable components
08/22/1991DE4004682A1 Magnetic field blanket for therapeutic treatment - coils can be systematically energised to produce moving field and coil excitation pulses are adjustable in frequency, prf and amplitude
08/21/1991EP0442628A1 Armature insert
08/21/1991EP0441862A1 Magnetic field generating assembly.
08/21/1991EP0441830A1 Electromagnet
08/20/1991US5041935 Rotary actuator for positioning magnetic heads in a disk drive
08/20/1991US5041806 Electromagnetic holding device
08/14/1991EP0441737A1 Magnetic gain adjustment for axially magnetized linear force motor with outwardly surfaced armature
08/14/1991CN2082891U Energy-saving speed adjusting moment degauss electromagnet
08/10/1991CA2035924A1 Solenoid assembly
08/08/1991WO1991011605A2 Electromagnetically operated valve
08/08/1991DE4003229A1 Elektromagnetisch betaetigbares ventil Electromagnetically operable valve
08/07/1991EP0439910A1 Improved redundant force motor
08/07/1991CN2082449U Valve electromagnet with overheating protection and warning functions
08/07/1991CN2082448U Alternating current tractive electromagnet protection device
08/06/1991US5038129 Electromagnetic having magnetic shield
08/06/1991US5038128 Magnetic gripper
08/06/1991US5038125 Valve block for a slip-controlled hydraulic brake system
08/06/1991US5038066 Claw pole rotary actuator with limited angular movement
08/06/1991US5038064 Limited angle rotary actuator
08/06/1991US5038063 Rotary actuator with limited angular movement
08/06/1991US5036885 Electromagnetic valve
08/01/1991DE4002286A1 Magnet driver esp. for magnetic dispensing pump - has energy store to receive electrical energy from electromagnet after disconnection from voltage source
07/1991
07/30/1991US5036422 Solenoid pump driving circuit
07/30/1991US5036282 Biplanar gradient coil for magnetic resonance imaging systems
07/30/1991CA1287106C Installation for nuclear magnetic resonance imaging
07/30/1991CA1286930C Magnet wire and method of using the same
07/25/1991WO1991010854A1 Electromagnetically operated valve
07/23/1991US5034715 Permanent magnet field sources of conical orientation
07/23/1991US5034714 Universal relay
07/23/1991US5034670 Control circuit for electromagnetic actuator
07/17/1991EP0437003A2 Actuator with a built-in reed switch
07/17/1991EP0436870A2 Dynamic vehicle suspension system including electronically commutated motor
07/16/1991US5032869 Axial thermal shield support for a MR magnet
07/16/1991US5032812 Solenoid actuator having a magnetic flux sensor
07/16/1991US5032031 Drive circuit for a matrix printer
07/16/1991US5031874 Stick-on, protective magnet
07/11/1991WO1991010242A2 Magnetic drive with permanent-magnet solenoid armature
07/11/1991WO1991010173A1 Improved bar magnet for construction of a magnetic roller core
07/11/1991DE4037172A1 Electromagnetic valve for household appliances - has pole tube pressed into coil casing to prevent armature falling out and to retain components
07/09/1991US5030936 Plungerless solenoid construction
07/09/1991US5030344 Magnetic fluid conditioner
07/09/1991US5029618 Electromagnetic control device for a dobby
07/09/1991CA1285781C Cryogenic recondenser with remote cold box
07/04/1991DE4000071A1 Compact bi-stable electromagnetic servo-valve for fluid flow control - has magnetised closure element driven by reversible winding current between I=O seatings
07/03/1991CN1052747A Combined permanent magnet steel
07/02/1991US5029287 Installation for nuclear magnetic resonance imaging
07/02/1991US5028903 Spherical permanent magnet with equatorial access
07/02/1991US5028902 Permanent magnet field sources of radial orientation
07/02/1991US5028901 Magazine for coordinate measuring apparatus
07/02/1991US5028900 Damper for a rotary solenoid
07/02/1991US5028856 Controlled linear motor
07/02/1991US5028073 Dynamic vehicle suspension system including electronically commutated motor
06/1991
06/27/1991WO1991010251A1 Dual current sensing driver circuit
06/27/1991DE3942542A1 Bistabiler magnetantrieb mit permanentmagnetischem hubanker Bistable magnetic drive with permanent magnetic lifting armature
06/27/1991CA2042389A1 Dual current sensing driver circuit
06/26/1991EP0434247A2 Shield for a magnet
06/26/1991CN1052554A Magnetic resonance imaging apparatus with artefact reduction
06/19/1991EP0432850A1 Magnetic resonance imaging apparatus with artefact reduction
06/19/1991EP0432750A2 Apparatus for generating uniform magnetic field using small diameter spherical metallic members provided on magnetic poles
06/19/1991EP0432181A1 Electric rotary actuator.
06/19/1991CN1052398A Electrical energy storage system
06/19/1991CA2021599A1 Shield for a magnet
06/18/1991US5025239 Electromagnetic actuator for cameras and the like
06/18/1991US5024542 Magnetic actuator
06/18/1991US5024311 Electromagnetic spring clutch
06/18/1991US5024247 Control motor for a servo valve
06/12/1991EP0432060A1 Permanent magnet alloy of the type iron-neodymium-boron, sintered permanent magnet and manufacturing process
06/12/1991EP0432055A1 Magnetic circuit with shading ring for AC-electrical equipment
06/12/1991EP0431849A2 Method of optimizing shim coil current selections in magnetic resonance magnets
06/12/1991EP0431848A2 Method of optimizing passive shim placement in magnetic resonance magnets
06/12/1991EP0431847A2 Apparatus for locating passive shim guide rails in MR magnets
06/12/1991EP0214186B1 Cylindrical gradient core set for an nmr imaging system
06/11/1991US5023584 Magnet cartridge for magnetic resonance magnet
06/11/1991US5022425 Sensitive electrical to mechanical transducer
06/06/1991DE3939813A1 Magnetic throttle valve for gas and fluid control - uses opposing electromagnets on permanent magnet slide valve
06/06/1991DE3939537A1 Magnetic valve for ON=OFF control of gas fluid flow - employs permanent magnets in latching mechanism
06/05/1991EP0430198A2 Rare earth-based permanent magnet having corrosion resistant surface film and method for the preparation thereof
06/05/1991EP0429988A1 Use of particular magnetic vector potentials for treating materials
06/05/1991EP0429684A1 Developing apparatus
06/05/1991EP0429682A1 Developing apparatus
06/05/1991CN2078483U Small-size generalized electromagnet capable of operating at wide range of voltage
06/05/1991CA2021630A1 Apparatus for locating passive shim guide rails in mr magnets
06/05/1991CA2021619A1 Method of optimizing passive shim placement in magnetic resonance magnets
06/05/1991CA2021605A1 Method of optimizing shim coil current selections in magnetic resonance magnets
06/02/1991CA2031242A1 Fe, nd and b alloy for permanent magnet; sintered permanent magnet and process therefor
05/1991
05/29/1991EP0428728A1 Electromagnet for solenoid valve and production method of the same
05/29/1991EP0428570A1 Control device for a gas shuttle valve in an internal combustion engine
05/29/1991EP0428552A1 Control device for a gas shuttle valve
05/29/1991DE3938896A1 Electromagnetic control valve with valve seat - has spring=loaded valve element protruding through axial bore in core with core stop collar on valve element
05/28/1991US5019863 Wedged-pole hybrid undulator
05/28/1991US5019796 Bar magnet for construction of a magnetic roller core
05/28/1991US5018939 Apparatus for separating iron sheets
05/23/1991DE4036648A1 Use of magnetic or electrostatic vector potentials - for treating materials
05/21/1991US5016681 Electromagnetic blocking unit for a weft storage drum
05/21/1991US5016638 Vibration control in NMR magnet structures
05/21/1991CA2030242A1 Apparatus and method for applying information energy to a substrate
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