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5745970 |
Disc drive device chucking magnet magnetizing method and magnetizing apparatus
A chucking magnet magnetizing method and magnetizing apparatus with which it is possible to carry out magnetization so that the magnetic attraction forces of chucking magnets are uniform even when...
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5677821 |
Method and device for detecting full magnetization of electro-permanent magnets
A method and device for detecting full magnetization of an electro-permanent magnet which includes at least one permanent magnet part and at least one coil. Current is passed through the coil over...
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5654864 |
Control method for magnetic stereotaxis system
A control method permits the operation of multiple superconducting magnetic coils so as to move a magnetic object to precisely specified locations within the body under command of a...
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5586064 |
Active magnetic field compensation system using a single filter
The present invention provides a magnetic compensation system and a method of utilizing a magnetic compensation system to neutralize magnetic fields in an environment of a magnetically sensitive...
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5557248 |
Magnetizer for magnets with shaped magnetic waveform
An apparatus for making permanent magnet material magnetizes a body of material including a primary winding which has portions wound on a first core carrying current in a first direction creating a...
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5515233 |
Electronic circuit of an electromagnetic clutch
An electric control circuit of an electromagnetic clutch includes a relay-controlled, two-position switch which operates, in response to a power source being disconnected from the switch relay and...
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5495230 |
Magnetomechanical article surveillance marker with a tunable resonant frequency
A marker for use in a magnetomechanical electronic article surveillance (EAS) system is made by mounting a magnetostrictive element in a housing adjacent to a biasing element that is magnetized to...
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5467243 |
Electromagnet control system
Alternating current provided at an angular frequency (ω) for powering an electromagnet force actuator having a leakage inductance (L 1 ) whereby the alternating current is controlled by a voltage...
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5432669 |
Superconducting magnet apparatus for magnetically levitated train
A superconducting magnet apparatus according to the present invention has serially connected superconducting magnets, which are energized and de-energized via disconnectors from a power supply...
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5327320 |
Apparatus for suppression of individual ignition events in an ignition system
An apparatus for suppression of individual ignition events in an ignition system includes a short-circuit switch, connected in parallel to the primary winding of the ignition coil. The...
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5257158 |
Apparatus for magnetizing and demagnetizing a tool
Apparatus for selectively magnetizing and demagnetizing a small tool, such as a screwdriver, by providing an enclosure having a first opening to receive a tool for magnetizing a desired portion of...
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5239442 |
Method and device for dispersing ions by remote action
The device acts by remote action to disperse electric charges or ionic concentrations inside organic or inorganic matter, inside biological matter, or in any other matter in which mobile electric...
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5229902 |
Circuitry for reversing a magnetic field
A circuit for reversing a magnetic field in which a bifilar coil is provided with a series of two oppositely-wound windings that are connected together at one end to form a junction. A source of...
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5196999 |
Electrostatic levitation furnace
An electrostatic levitation furnace is used for production of microgravity material in space. The furnace comprises a rotary elliptical mirror having a reflection surface of a rotary elliptical...
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5171431 |
Electronic lime controller with controls responsive to flow rates and water hardness
An electronic lime controller for controlling lime adjusts for water hardness and the water flow rate in a water system. The controller includes a control for adjusting the frequency of a...
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5161083 |
Solenoid actuator with position feedback system
Disclosed is an improved solenoid actuator utilizing an actuator position sensor which in combination with an actuator controller, adjusts the energizing current supplied to the actuator's coil....
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5075814 |
External method and apparatus for magnetizing metal pieces in rotary electric apparatus to a permanent magnetization state
An external magnetizing method and external magnetizing apparatus for a rotary electric apparatus having internal permanent magnets, which obtains permanent magnetization of metal pieces fixed...
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5055813 |
Magnetization/demagnetization device
A compact, portable magnetization/demagnetization device comprises a tubular housing internally of which at one end is mounted an electrical coil which surrounds a cavity accessible to screwdrivers...
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5032947 |
Method of improving magnetic devices by applying AC or pulsed current
A method of improving the magnetic properties of a ferromagnetic materials is disclosed. The method comprises a step of providing a specimen made of Fe, Ni or Co based amorphous alloys in a...
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5030196 |
Magnetic treatment device
A magnetic medical treatment device and method wherein a coil received in a housing is energized with a periodic current of a predetermined frequency furnished from a power supply accommodated in...
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4915761 |
Magnetic bead spotter
A system for demagnetizing and subsequently selectively magnetizing a small portion of a ferrous member embedded in a green tire carcass in order to facilitate the rotational orientation of the...
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4873605 |
Magnetic treatment of ferromagnetic materials
A device for treatment of ferromagnetic materials comprising means for developing a magnetic field of a selected intensity, duration, and cycle, which field is passed through materials to be...
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4795995 |
Method and apparatus for producing electromagnetic surveillance fields
A system for producing alternating electromagnetic fields for use in theft detection and surveillance systems, including an arrangement of field-generating inductance coils for disposition on...
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4761579 |
Electromagnetic levitation device
A two-dimensional network of alternating (N,S) magnetic poles is generated by a heavy gauge conductor (F) having an alternating current from an excitation source (G) passing therethrough. The...
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4737753 |
Multipolar magnetization device
A multipolar magnetization device comprises at least one electric power source, at least two distinct current pulse generating devices and several portions of electric conductors respectively...
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4663693 |
Method for magnetic stabilizing of fluidal layers
The method for magnetic stabilizing of fluidal layers consists in placing fluidal layers of ferromagnetic particles in a magnetic field that is axially gradient and oriented parallel to the...
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4648004 |
Methods for detecting a magnetic preorientation in mechanical parts and for magnetizing the parts utilizing such detection method, and an associated device for magnetizing the parts in accordance with these methods
Disclosed are a method of detecting a magnetic preorientation in mechanical parts, such as motor rotors, and a device, utilizing this method, for the magnetization of tubular parts. The device...
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4614929 |
Method for manufacture of magnet
A method for the manufacture of an annular magnet, which comprises depositing, on the opposite sides of an annular material of magnetic substance, magnetizing members regularly spaced...
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4551781 |
Control circuit for magnetic probe
A control circuit for a magnetic probe. A power supply connects the available power to the direct voltages required to control electronic circuitry, and a voltage required for the magnetic probe. A...
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4537850 |
Process and apparatus for rejuvenating electrostatic copy machine toner
A method and apparatus for rejuvenating magnetic toner used in certain electrostatic copying machines. The used toner is placed in a container which is inserted in an air coil which is energized to...
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4471403 |
Biasing and fast degaussing circuit for magnetic materials
A dual-function circuit is provided which may be used to both magnetically bias and alternately, quickly degauss a magnetic device. The circuit may be magnetically coupled or directly connected...
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4409581 |
Process and apparatus for magnetizing, on both sides, the surfaces of bodies to be magnetized
The process for magnetizing two opposite surfaces of a magnetizable body according to predetermined vectors includes the engagement of two magnetizing heads with each surface and rotation of the...
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4395746 |
Method and device for magnetically transporting
A method and device for magnetically transporting finely divided magnetic particles accumulated or deposited at a space. First a DC magnetic field is exerted to the finely divided magnetic...
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4381492 |
Apparatus for magnetizing multipolar permanent magnets
Apparatus for magnetizing permanent magnet bodies to provide them with narrow magnetic poles of alternating polarity consists of arranging an array of pairs of magnetizing conductors in such a...
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4373174 |
Method for protective magnetization of vessels
A method for the protective magnetization of vessels by using magnetic loops (11). The field strength of the magnetic field surrounding the vessel is detected by means of a Hall generator (12) and...
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4287512 |
Magnetic locking methods and apparatus
Matching components of a magnetic locking assembly are magnetically attracted into mating relationship until a predetermined magnetic flux is established in one of the components. Such established...
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4186364 |
Method of magnetizing erasing head
A method of magnetizing an erasing head for small type tape recorders is disclosed. An erasing head having its opposite ends formed in at least one convex surface is disposed in a space formed...
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4169998 |
Iron core assembly for magnetizing columnar permanent magnets for use in electrostatic developing apparatus
Disclosed is an iron core assembly for magnetizing columnar permanent magnet, particularly columnar ceramic permanent magnets adapted for use in magnetic-brush type electrostatic developing...
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4168481 |
Core assembly for magnetizing columnar permanent magnet for use in an electrostatic developing apparatus
A core assembly for magnetizing a columnar permanent magnet, especially a columnar ceramic permanent magnet, adapted for use in an electrostatic developing apparatus of magnetic-brush developing...
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4167718 |
Dies set for magnetizing outer surface of magnetic column
Disclosed is an improved dies set for magnetizing a cylindrical or columnar magnet adapted for use in an electrostatic developing apparatus of magnetic-brush developing type. The dies set is...
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4166263 |
Magnetic core assembly for magnetizing columnar permanent magnet for use in electrostatic developing apparatus
Disclosed is a magnetic core assembly for magnetizing columnar permanent magnet, particularly columnar ceramic permanent magnet adapted for use in magnetic-brush type electrostatic developing...
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4165528 |
Fault indicator and means for resetting same
A fault indicator for alternating current distribution systems includes a pair of spaced pole pieces for receiving therebetween at one end the conductor and at the other end a pivoted permanent...
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4160283 |
Magnetizing and demagnetizing tool
A magnetizable iron core is surrounded by a magnetizing solenoid coil which can be energized by 60 hertz regular house power. An article of magnetizable material to be magnetized is placed adjacent...
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4146956 |
Method for manufacturing a multipolar erasing head
Alternate S- and N-poles are disposed on a multipolar erasing head in the direction of a relative movement of the multipolar erasing head to a magnetic recording medium. The multipolar erasing head...
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4148091 |
Electromagnetic force machine with universal portable power supply
An electromagnetic force (EMF) machine with a universal portable power supply is disclosed. The universal portable power supply energizes either a multiple turn flux concentrator or a single turn...
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4116031 |
Flux concentrator for electromagnetic pulling
A flux concentrator has a pair of primary coils wrapped around a thin walled cylindrical portion of a secondary coil. The secondary coil has a conductive head at an end and the coil is slotted to...
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3876932 |
Omnidirectional magnetic particle flaw detecting apparatus
An omnidirectional magnetic particle flaw detecting apparatus is disclosed. The apparatus includes two sets of magnetizing coils crossed in such a manner that an elliptical rotating magnetic field...
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3805202 |
BETATRON ELECTROMAGNET
A betatron electromagnet which comprises a magnetic circuit with pole pieces restricting an operating zone for mounting a betatron vacuum chamber and each having a solid central part and at least...
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3797403 |
POWER ELECTROMAGNETIC SUSPENSION AND GUIDE SYSTEM FOR VEHICLES
An electromagnetic suspension and drive system, e.g., for a floating personnel carrier or other vehicle, wherein a T-section armature is carried by the vehicle and is provided along its shank with...
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3742862 |
FLOATING ELECTROMAGNETIC SUSPENSION SYSTEM
A carriage traveling along a track of magnetically permeable metal is supported at one or more points by electromagnets energized by a variable current to maintain a predetermined spacing between...
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