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)
10/1981
10/13/1981US4295177 Control circuits for solenoids
10/13/1981US4295111 Low temperature latching solenoid
10/13/1981US4295066 Electromagnetic actuator
10/13/1981US4294286 Electromagnetically operable fluid flow control valve mechanism
10/07/1981EP0037295A1 High-speed circuit breaker provided with a shock-proof device
10/06/1981US4293888 Print hammer drive circuit with compensation for voltage variation
10/06/1981US4293088 Electronically operated portable fastener driving tool
09/1981
09/29/1981CA1109906A1 Magnetic latch device for a clapper type contactor
09/22/1981US4291358 Magnetic valve with electronic control
09/22/1981US4290356 Actuator mechanism for a print hammer or the like
09/17/1981WO1981002615A1 Gas-flow regulating system
09/17/1981WO1981002602A1 Magnetic decoupler
09/15/1981US4290040 Electromagnetic actuator having preloaded spring means
09/15/1981US4290039 AC Solenoid apparatus of the armature in tube type
09/08/1981US4288771 Electromagnetic driven device
09/08/1981CA1108470A1 Hammer for impact printer
09/02/1981EP0034811A1 Polarized magnet system
09/01/1981US4287573 Method and means for coupling an elongated magnetic device
09/01/1981US4287550 Driving circuit for printing device in electronic cash register
08/1981
08/26/1981EP0034519A2 Electromagnetic valve
08/25/1981US4286243 Electrical switch constructions and methods of making the same
08/25/1981CA1107814A1 Electrical control circuit for controlling a d.c. solenoid
08/25/1981CA1107590A1 Solenoid-operated fuel flow control for fuel injection system
08/19/1981EP0034076A2 Solenoid driving system
08/18/1981US4284950 Imaging systems
08/18/1981US4284051 Switching control apparatus for electromagnetic control units
08/18/1981CA1107327A1 Relay operating electromagnet comprising plural coils mounted on a u-shaped core and a free-floating armature
08/12/1981EP0033704A1 Electromagnetic coils system for examining human bodies by means of nuclear magnetic resonance, and human body imaging apparatus utilizing such a system
08/12/1981EP0033703A1 High homogeneity magnet without magnetic circuit, especially for nuclear magnetic resonance imaging
08/11/1981US4283698 Magnet device for animals, in particular cattle
08/11/1981US4283668 DC Motor control with alternate action solenoid drive circuit
08/04/1981US4282503 Electromagnetic device
08/04/1981US4282502 Electromagnetic positioner
08/04/1981US4282501 Bi-directional linear actuator
07/1981
07/21/1981US4279520 Print mechanism for wire printer
07/14/1981US4278959 Current-stroke proportional type solenoid valve
07/14/1981US4278904 Electromagnetic devices
06/1981
06/30/1981US4276529 Magnet coil arrangement for generating a homogeneous magnetic field for magnetic resonance arrangements
06/30/1981US4276499 Rotary actuator
06/30/1981CA1104054A1 Cryostat for superconducting nmr spectrometer
06/23/1981US4275371 Electromagnetic rotary actuator
06/16/1981US4274038 Electrical servo actuator bracket
06/16/1981US4273028 Valves and operating system for expansion machines
06/16/1981CA1103143A1 Cryostat with refrigerator for superconduction nmr spectrometer
06/09/1981US4272748 Print wire solenoid
06/09/1981US4272747 Solenoid housing
06/09/1981US4272225 Electromagnetically-operated fixed displacement pump
06/09/1981US4272027 Fuel injection pumping apparatus
06/02/1981US4270726 Valve arrangement, especially for controlling flow of hot water through a heating device for motor vehicles
06/02/1981US4270502 Fuel injection pumping apparatus
05/1981
05/27/1981EP0029296A1 Internal combustion engine spark ignition system
05/26/1981US4270112 Normal conductive or superconductive magnet coil
05/26/1981US4270109 Bounce-free lifting device
05/26/1981US4269493 Electromagnetic camera shutter control device
05/26/1981US4269361 Fuel injection nozzles
05/26/1981CA1101967A1 Control circuit for electromagnetic apparatus
05/20/1981EP0028919A1 Magnetic brush roll and developing or cleaning apparatus incorporating same
05/19/1981US4267897 Electro-mechanical converters and control apparatus for power steering units utilizing the same
05/13/1981EP0028467A1 Rotary actuator with selectable response characteristics
05/12/1981US4266523 Electromagnetically actuated pumps
05/06/1981EP0028090A1 Control circuit for an electromagnet
05/06/1981EP0028034A1 Coil for electric apparatus or electric machine
05/06/1981EP0027894A2 Flap-armature electromagnet
05/05/1981US4265530 Shutter blade drive system
05/05/1981CA1100572A1 Solenoid driver circuit
04/1981
04/28/1981US4264887 Electro-lifting magnet
04/28/1981US4264154 Apparatus for automatically controlling transmission of light through a lens system
04/28/1981CA1100178A1 Permanent magnetic system for adhesion purposes
04/22/1981EP0027404A1 Miniature electric circuit breaker in moulded case
04/21/1981US4263096 Toroidal magnet system
04/21/1981US4262687 Electromagnetic valve security device for fuel supplies
04/21/1981US4262592 Hammer drive apparatus for impact printer
04/14/1981US4262271 Solenoid having non-rotating plunger
04/08/1981EP0026695A1 Electromagnet with mobile equipment having a permanent magnet, particularly for a contactor
04/08/1981EP0026196A1 Permanent magnet generator
04/07/1981US4260523 Magnetized active carbon composition
04/01/1981EP0026068A1 Circuits for electromagnet energisation control
04/01/1981EP0026014A1 Method of manufacturing a permanent magnet assembly which is to be arranged in an air gap of a transformer core
03/1981
03/31/1981US4259653 Electromagnetic reciprocating linear actuator with permanent magnet armature
03/31/1981US4258730 Magnetized active carbon; removal of nicotine and carbon monoxide
03/24/1981US4258347 Magnet coil
03/18/1981EP0025382A1 Electromagnetic solenoid actuator
03/17/1981US4255837 Magnetic clip device
03/11/1981EP0024999A1 Magnetic block of the permanent magnets type comprising an on-off control mechanism
03/11/1981EP0024995A1 Improved electromagnetic solenoid actuator
03/11/1981EP0024909A1 Improvements in solenoids
03/10/1981US4255063 Electromagnetic line spacing device
03/10/1981US4254935 Solenoid construction
03/10/1981US4254705 Printing magnet drive device
03/03/1981US4254393 Treatment of fuel
03/03/1981US4253493 Actuators
03/03/1981CA1096653A1 Servoed accelerometer utilizing rare earth magnets
02/1981
02/24/1981CA1096437A1 Plastic bonded permanent magnet and method of making same
02/24/1981CA1096426A1 Electromagnet an extremely inverse time overcurrent protective relay
02/24/1981CA1096187A1 Ornament adapted to be fixed by permanent magnets
02/17/1981US4251791 Magnetic base
02/17/1981US4251762 Armature position detector
02/17/1981US4251052 Fluid flow control valve especially for use in heating installations for motor vehicles and a method of assembling and adjusting the valve
02/17/1981US4251051 Solenoid structure having a relatively unrestrained generally flat armature member
02/17/1981CA1095977A1 Method of manufacturing an electromagnet
1 ... 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201