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6741440 |
Mechanically pulsed magnetization kit
A magnetization method and apparatus is described as utilizing a pair of mechanically counter-vibrated permanent magnets having mutually facing unlike magnetic poles, and wherein a ferromagnetic...
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6731491 |
Bulk degausser with fixed arrays of magnet poles
A bulk degaussing apparatus and method for erasing magnetic media of various sizes. A plurality of fixed magnetic poles are predisposed around a gap for projecting magnetic flux across the gap such...
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6687111 |
Electromagnetic mark device for a magnetism encoder
An electromagnetic mark device for any type of magnetism encoder applies the electric current magnetic field as the electromagnetic mark thereof. The electromagnetic mark device comprises an...
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6683776 |
Method and apparatus for elevating and manipulating objects using fields only
A magnetic field-producing device is used for non-contact type elevation, elevation maintenance, or manipulation of objects. This type of elevation, elevation maintenance, or manipulation of...
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6683775 |
Control method for an electromagnetic actuator for the control of an engine valve
A control method for an electromagnetic actuator for the control of an engine valve in which at least one electromagnet displaces an actuator body under the action of the force of magnetic...
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6674627 |
Needle-card adjusting device for planarizing needle sets on a needle card
A needle-card adjusting device for planarizing needle sets on a needle card, in which the needle card is connected to a circuit board used as a contact interface to a test head. The needle-card...
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6654224 |
Degaussing circuit
An apparatus and method for degaussing a cathode ray tube including an alternating current (AC) source; a positive temperature coefficient (PTC) element; a resistance; a first switch coupled...
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6650213 |
Electromagnetic-induction coupling apparatus
An electromagnetic-induction coupling apparatus adapted for use as a feeder system for supplying electric power to a spherical semiconductor ( 10 ) having a coil ( 11 ) on the surface thereof by...
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6650113 |
Detector and method thereof for determining magnetic flux based on electromotive force induced by an excitation current
A magnetic flux detector has a core member and an armature member. The core member generates a magnetic flux by an exciting coil receiving an excitation current controlled by an excitation current...
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6636153 |
Sensing system for magnetic clamping devices
A sensor system for determining acceptable magnetization between a magnetic clamp and a mold patent for a quick mold change system on an injection molding machine includes secondary sensing coils...
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6606233 |
Method and apparatus for immunizing a contactor circuit from the adverse effects of a derived power supply
A method and device for immunizing a contactor circuit from the inductive effects of a holding coil derived power supply, including: sensing a voltage signal from a power supply, the voltage...
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6603994 |
Apparatus and method for internally inducing a magnetic field in an aneurysm to embolize aneurysm with magnetically-controllable substance
The present invention involves a magnetic embolization apparatus for embolizing an aneurysm of a blood vessel. The apparatus includes a coiled element adapted for insertion within an aneurysm of a...
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6600243 |
Battery pack and an information processing device in which the battery pack is detachable/attachable
The objective of the present invention is to provide an information processing device that is operable by a battery and which suppresses the generation of standing waves and has little radiation...
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6596076 |
Apparatus and method for altering the apparent effects of gravity
There is disclosed an apparatus and method that appear to alter the effects of gravity by generating a magnetic field that causes an upward/downward magnetic force to act on a substance in a...
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6570751 |
Magnetic encoder, wheel bearing and method of manufacturing magnetic encoder
A magnetization yoke having an exciting coil wound thereon is arranged to hold a magnetic member and a metal ring so that a magnetic flux passes through and magnetizes the magnetic member in the...
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6556412 |
Degaussing apparatus and method for rotatable video display apparatus
A sequential driving type degaussing circuit includes a rotation direction and angle detector for generating each pulse by using a pair of photo sensors and slits to detect a rotation angle and a...
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6522517 |
Method and apparatus for controlling the magnetization of current transformers and other magnetic bodies
A varying voltage is applied to a conductive winding ( 61 ) that magnetically interacts with a magnetic body ( 60 ). The varying voltage causes the voltage induced in the winding to have such...
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6487061 |
Electromagnet support system
A compliant structure, such as a rubber pad, is used to simplify the resonance pattern of a vibrating object. According to one aspect of the invention, a support system is provided with a device...
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6479976 |
Method and apparatus for accurate measurement of pulsed electric currents utilizing ordinary current transformers
A voltage source connected in the secondary circuit of a current transformer is controlled so as to provide a secondary current that is accurately and continuously proportional to a primary current...
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6469880 |
Reducing vortex densities and transporting vortices in superconductors
A system and method for removing unwanted magnetic flux from a superconductor. A device can generate a controllable electric field potential using an asymmetric electric field potential to...
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6438250 |
Method for making a conductor, or electric circuit balanced in radioelectric interference such as micro-discharge and corresponding conductor or circuit
The invention relates to a manufacturing process of an electrical conductor or circuit compensated for radio interferences, including those from the electrical circuit itself. An application of a...
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6400995 |
Rodent control device
A rodent control device generates a pulsating, interrupted electromagnetic field via one or more coil(s) and induces it onto the power line wiring in a building via core(s) linked to the coil(s)....
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6373676 |
Magnetic floatation control system
An improved system and method for floating an object is disclosed by the present invention. The system includes an electromagnetic source for accommodating a wide weight-range of objects to be...
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6333843 |
Method of starting an electromagnetic actuator operating a cylinder valve of a piston-type internal-combustion engine
A method for starting up an electromagnetic actuator operating an engine cylinder valve. The actuator has two spaced electromagnets, between which an armature, connected to the cylinder valve, is...
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6317308 |
Control device of an electromagnet, with detection of an unscheduled movement of the movable core of the electromagnet
The device comprises means for detecting an unscheduled movement of the movable core of an electromagnet during a holding phase. For this, a control and regulation circuit monitors the current...
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6249417 |
Electrical circuit for producing a substantially constant pulsed magnetic field for repelling rodents
An electrical circuit for producing a substantially constant pulsed magnetic field for repelling rodents includes an electromagnetic coil for generating a magnetic field in response to alternating...
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6205012 |
Apparatus for altering the magnetic state of a permanent magnet
An apparatus (10) for altering the magnetic state of a permanent magnet comprises a coil inductor (26) for generating and applying an induced magnetic field to the permanent magnet. The coil...
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6160697 |
Method and apparatus for magnetizing and demagnetizing current transformers and magnetic bodies
A method and apparatus for establishing and maintaining a preferred induction level in a magnetic body. A varying voltage is applied to a conductive winding (61) that magnetically interacts with a...
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6154352 |
Method of magnetizing a cylindrical body
In a method of magnetizing a cylindrical body comprising a substantially isotropically distributed material according to the present invention, the method comprises the steps of: applying a...
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6154353 |
Magnetic suspension system
A suspension system for magnetically suspending an object O comprises an electromagnetic coil L having an axially extending core 13 of magnetically permeable material and a permanent magnet 14...
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6144544 |
Apparatus and method for material treatment using a magnetic field
A method and apparatus for treating an object includes generating a magnetic field wherein at least some of the magnetic field is characterized by changes in amplitude of the magnetic field from an...
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6128174 |
Method and apparatus for rapidly changing a magnetic field produced by electromagnets
A method and apparatus for ramping current in an electromagnet in which a coil is used to generate the magnetic field provides rapid changes in the generated magnetic field. The method allows a...
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6118644 |
Electromagnetic actuator and image pickup apparatus
An electromagnetic actuator has a large driving force and a good response speed and an image pickup apparatus obtains an image of a high resolution even by using a solid state image pickup device...
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6113014 |
Dual solenoids on a single circuit and fuel injector using same
An electronically controlled device, such as a fuel injector, includes a first solenoid and a second solenoid attached to the injector body. An electrical circuit is attached to the injector body,...
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6111741 |
Motion recognition process, in particular for regulating the impact speed of an armature on an electromagnetic actuator, and actuator for carrying out the process
Motion recognition processes are disclosed, in particular for regulating the impact speed of an armature on an electromagnetic actuator with at least one electromagnet having at least one pole face...
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6104593 |
Tire magnetization method, tire magnetized by the tire magnetization method, tire magnetic field detection method, tire revolution detection signal processing method, and tire revolution detection apparatus
A magnetization magnet (11) is brought into contact with or close to the outer circumferential surface of a tire (12) that has a steel belt in its outer circumferential portion, and is relatively...
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6101081 |
Magnetizing method for rotor magnet of reluctance magnet motor
A rotor magnet of a three-phase reluctance magnet motor is magnetized by coupling two of the three outer terminals (RS), and feeding a positioning current between the outer terminals RS and a third...
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6084514 |
Apparatus for deactivation of electronic article surveillance tags
An apparatus for deactivating a surveillance tag comprising a first coil located in a first plane, a second coil located in a second plane, and a third coil located in a third plane such that the...
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6013957 |
Arrangement for reducing the electromagnetic field created by power electronic equipment
The arrangements essentially comprise an antenna element placed in the vicinity of a radiating conductor of the equipment in such a manner as to absorb the electromagnetic energy reaching it by...
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5973606 |
Activation/deactivation system and method for electronic article surveillance markers for use on a conveyor
A system and method for setting the activation state of electronic article surveillance markers, tags, and labels being transported on a conveyor system is provided. The system includes a pair of...
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5952734 |
Apparatus and method for magnetic systems
A coil for bucking out undesired ambient time varying magnetic fields in the region of the gap in an MRI magnet structure is energized by a servo loop controlled by a Flux Lock Circuit having, in...
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5929399 |
Automatic open loop force gain control of magnetic actuators for elevator active suspension
Automatic gain control is provided for a control means for controlling a magnetic actuator for an elevator horizontal active suspension. The gain is varied depending on the drive current in the...
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5900062 |
Lift pin for dechucking substrates
A lift pin 95 for dechucking a substrate 15 held to a chuck 50 by residual electrostatic charge, the substrate being processed in a plasma formed using RF currents, is described. The lift pin 95...
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5870270 |
Non-burnout controller for a switching coil
A non-burnout controller for a switching coil is disclosed. The controller has a pulse timer, a relay switch, and an actuation switch. After being reset and actuated, the pulse timer defines a...
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5841621 |
Sensorless measurement of electromagnetic actuator displacement device
This invention pertains to sensorless measurement of electromagnetically induced displacement in actuators and similar units. Primarily, the device imposes a constant frequency and amplitude...
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5835329 |
Apparatus for agitation separation of magnetic particles
This invention provides a method and apparatus for agitating magnetic particles, suspended in a solvent using an alternating magnetic field gradient. The apparatus has a housing chamber capable of...
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5822167 |
Method of adjusting an electromagnetic actuator
A method of adjusting the position of rest of an armature of an electromagnetic actuator, reciprocated against the force of resetting springs by an alternating energization of two spaced...
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5781396 |
Arrangement for the control of an electromagnet
The arrangement for the control of an electromagnet is intended for an electromagnet consisting of a Stationary core 7, a pickup coil 1 through which current flows temporarily after the switch is...
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5759797 |
Apparatus and method for analyzing physiological state of organism
An apparatus and a method for analyzing the physiological state of a sample of a living organism of eucaryotes and procaryotes, e.g., plants, seeds, tissues, calluses and microorganisms, which...
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5751535 |
Control circuits for an electromagnetic flow meter
The control circuits for the electronic flow meter which are the subject of this invention and whose purpose is to meter with precision the flow through a pipe, eliminating disturbances caused by...
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