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MAGNETS AND ELECTROMAGNETS

Subclass of:

335 - Electricity: magnetically operated switches, magnets, and electromagnets

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
335296000 Magnet structure or material 364
335220000 With magneto-mechanical motive device (e.g., electromagnet with armature) 140
335285000 Work or object holding type 72
335216000 Superconductive type 61
335219000 Combined with diverse-type art device 47
335284000 For magnetizing or demagnetizing 26
335215000 Magnetostrictive-type device 5
20110140816MAGNETICALLY BIASED MAGNETOPROPANT AND PUMP - Provided is a system and method for enabling pressure or acoustic waves to induce magnetostrictive volume or shape change, providing greater control over magnetopropants. A coating material and the spacing between a magnetopropant and a magnetic particle are selected such that a certain pressure causes change in the relative distance of magnetopropant and magnetic particle, thereby changing the amount of magnetostriction. The coating material, magnetopropant, and magnetic particle are assembled to form a pressure sensitive magnetopropant. Given this structure, changes in pressure will cause a fluctuation of the amount of magnetostriction. In a pore space environment, this causes a change in pore space with resulting change in permeability and, hence, changes in fluid flow.06-16-2011
20110140815Integrated, Lighted Ultrasonic Inserts - Embodiments of a magnetostrictive device, a dental lighting system, a method of illuminating a lighting apparatus and a lighting apparatus are disclosed. The embodiments may include a lighting apparatus with a light source, an electrical power storage device and a switch. When the switch detects a magnetic field, the switch may complete an electrical connection between the electrical power storage device and the switch, thus illuminating the light source. The magnetic field may be magnetostrictively or non-magnetostrictively generated, and maybe be produced by a receptacle, a hand-piece or the lighting apparatus itself. A user may switch the light source on and off. In a magnetostrictive device, the light may be illuminated even when a tip is not activated, and the electrical power storage device may be inductively re-charged. The lighting apparatus may be included in an insert of a magnetostrictive device, such as a magnetostrictive ultrasonic hand-held dental device.06-16-2011
20090033448Device Having a Shape Memory Element - Conventional devices have a valve needle and a shape memory element which, by the application of a controllable magnetic field, executes a control stroke travel that operates the actuator, and having a coil that excites the magnetic field which is situated in a magnet housing which, at its end face, is bordered with respect to an actuating axis by a front wall in each case, the front walls having a through opening radially within the coil. It is a disadvantage that the magnetic field excited around the coil is conducted unfavorably, so that at most a slight magnetic field develops in the shape memory element. The shape memory element has a magnetic field flowing through it, in the direction of its longitudinal extension, if at all. Since the shape memory element has a high magnetic resistance and is developed to be very long in the axial direction, only a very weak magnetic field can be induced in the shape memory element. In response to the magnetic field that is weak at most, the shape memory element can generate only a very slight lift of the valve needle. In the device according to the present invention, a strong magnetic field is conducted through the shape memory elements, and in this way, a large control stroke travel is achieved. The shape memory element(s) is/are positioned generally only in the through opening(s).02-05-2009
20080266036Magnetostriction aided switching - A method for reducing a temperature rise of a magnetic material is provided. The method includes applying force to the magnetic material to reduce a dimensional change of the magnetic material during a first part of an operation cycle, such as due to magnetostriction. The force is removed from the magnetic material during a second part of an operation cycle, allowing magnetostrictive dimensional changes to occur.10-30-2008
20110148553ELECTROMAGNETIC ACTUATOR HAVING A MAGNETOSTRICTIVE ELEMENT AND METHOD FOR OPERATING THE ELECTROMAGNETIC ACTUATOR - An electromagnetic actuator (06-23-2011
335210000 Electron or ion beam deflecting type 4
20090091409CURVED BEAM CONTROL MAGNET - A curved beam-guiding magnet is provided. The beam-guiding magnet without ferromagnetic material serves to deflect a beam of electrically charged particles along a curved particle path and incorporates a coil system made of at least six curved superconducting single coils arranged in pairs in mirror-inverted fashion relative to a beam-guiding plane. The coil system comprises two saddle-shaped main coils and two flat, banana-shaped curved secondary coils of the race-track type, each of which encloses a banana-shaped curved auxiliary coil of the race-track type. The beam-guiding magnet is particularly suitable for an irradiation unit of the gantry type.04-09-2009
20100328000Device and Method for Stimulation of Magnetohydrodynamics - A magnetohydrodynamic simulator that includes a plasma container. The magnetohydrodynamic simulator also includes an first ionizable gas substantially contained within the plasma container. In addition, the magnetohydrodynamic simulator also includes a first loop positioned adjacent to the plasma container, wherein the first loop includes a gap, a first electrical connection on a first side of the gap, a second electrical connection of a second side of the gap, and a first material having at least one of low magnetic susceptibility and high conductivity. The first loop can be made up from an assembly of one or a plethora or wire loop coils. In such cases, electrical connection is made through the ends of the coil wires. The magnetohydrodynamic simulator further includes an electrically conductive first coil wound about the plasma container and through the first loop.12-30-2010
20090153279SINGLE DRIVE BETATRON - A betatron includes a betatron magnet with a first guide magnet having a first pole face and a second guide magnet having a second pole face. Both the first and the second guide magnet have a centrally disposed aperture and the first pole face is separated from the second pole face by a guide magnet gap. A core is disposed within the centrally disposed apertures in an abutting relationship with both guide magnets. The core has at least one core gap. A drive coil is wound around both guide magnet pole faces. An orbit control coil has a contraction coil portion wound around the core gap and a bias control portion wound around the guide magnet pole faces. The contraction coil portion and the bias control portion are connected but in opposite polarity. Magnet fluxes in the core and guide magnets return through peripheral portions of the betatron magnet.06-18-2009
20100231335PERTURBATION DEVICE FOR CHARGED PARTICLE CIRCULATION SYSTEM - A perturbation device for a charged particle circulation system, capable of readily generating a distribution profile of a perturbation magnetic field, is provided.09-16-2010
335217000 Temperature-responsive type (e.g., temp. compensation means) 1
20090251249SYSTEM AND METHOD FOR MANUFACTURING FIELD EMISSION STRUCTURES USING A FERROMAGNETIC MATERIAL - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
Entries
DocumentTitleDate
20090231073Magnetic Field Control Method and Magnetic Field Generator - There is provided a magnetic field generator 09-17-2009
20090128268ELECTROMAGNETIC RECIPROCATING ENGINE - An electromagnetic engine comprises an electromagnet having opposing magnetic poles at ends thereof. A non-magnetic rigid support is mounted for oscillatory stroke movement relative to the electromagnet. A crankshaft is coupled to the support; a sensor is coupled to the crankshaft and outputs a crankshaft position signal. First and second permanent magnets are affixed to the support on either side of the electromagnet and are oriented so as to present the same magnetic pole to each respective end of the electromagnet. The permanent magnets are spaced from one another by a distance approximately equal to the distance between the first and second ends of the electromagnet plus the stroke movement of the support. A timing circuit is operative to switch the electromagnet between first and second energized states in response to the crankshaft position signal. Also disclosed is an electromagnetic engine in which a piston moves along guide rails.05-21-2009
20090295517Expandable Energy Storage for Portable Electronic Devices - An expandable energy storage for portable electronic devices is disclosed. The expandable energy storage includes magnetic-capacitor (MCAP) energy storage sticks and a controller. The MCAP energy storage sticks are arranged in parallel and provide electrical power to a portable electronic device. Each MCAP energy storage stick has a positive terminal, a negative terminal, and a controlling terminal for coupling with the portable electronic device. The controller couples the controlling terminals of the MCAP energy storage sticks to a system data terminal.12-03-2009
20090251247METHOD AND SYSTEM FOR PRODUCING REPEATING SPATIAL FORCES - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
20090251246SYSTEM AND METHOD FOR CONTROLLING MOVEMENT OF AN OBJECT - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
20090251245SYSTEM AND METHOD FOR PROVIDING A HOLD FORCE TO AN OBJECT - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
20090251244SYSTEM AND METHOD FOR ALIGNMENT OF OBJECTS - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
20090251243SYSTEM AND METHOD FOR CODING FIELD EMISSION STRUCTURES - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
20090251242Field Emission System and Method - An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.10-08-2009
20090015360HAPTIC FEEDBACK SYSTEM AND METHOD - A haptic feedback system includes movable and static portions coupled by one or more magnetic fields that serve to retard movement of the movable portion with respect to the static portion so as to provide haptic feedback when the movable portion is moved relative to the static portion. A magnet associated with one of the movable and static portions reacts with structure associated with the other of the movable and static portions so as to provide haptic feedback when the movable portion is moved with respect to the static portion.01-15-2009
20120139675TECHNIQUES FOR PRODUCING AN ELECTRICAL PULSE - Embodiments of the present invention provide an apparatus, comprising a field emission source having polarities and positions in accordance with a code, a plurality of connected coils adapted to move proximate to said field emission source and having positions in accordance with said code, and wherein an electrical pulse is created when said field emission source is aligned with said plurality of connected coils according to said code.06-07-2012
20090201111GENERATING ELECTROMAGNETIC FORCES WITH FLUX FEEDBACK CONTROL - An electromagnetic actuator with flux feedback control includes two poles located on opposite sides of a soft-magnetic target. A bias flux is introduced that flows into both poles. Magnetic circuitry may be designed so that the total bias flux is independent or substantially independent of a position of the target with respect to the poles or the control flux. The electromagnetic actuator also includes flux sensors introduced into each gap between the poles and the target. The electromagnetic actuator further includes an actuator control circuit to command the current in the control coil to bring a difference between the readings of the two flux sensors to a targeted level. In some aspects, the force exerted on the actuator target in this arrangement may be proportional to the command signal regardless of the position of the actuator target, MMF drop in the soft-magnetic parts of the magnetic circuit, or the frequency.08-13-2009
20120154078SOLENOID WITH A CONNECTION REGION - The invention refers to a solenoid, comprising a coil and a connection region for a current source. At least one conducting pin is arranged at the connection region. The pin is connected by a welding joint with the coil connector. The coil connector is connected to the coil. The pin can be positioned by a positioning piece slid on the pin.06-21-2012
20120126919HAPTIC FEEDBACK SYSTEM AND METHOD - A haptic feedback system includes movable and static portions coupled by one or more magnetic fields that serve to retard movement of the movable portion with respect to the static portion so as to provide haptic feedback when the movable portion is moved relative to the static portion. A magnet associated with one of the movable and static portions reacts with structure associated with the other of the movable and static portions so as to provide haptic feedback when the movable portion is moved with respect to the static portion.05-24-2012
20090058579MAGNET ASSEMBLY FOR A MAGNET VALVE - The invention relates to a magnet assembly for a magnet valve. The assembly has an inner pole and an outer pole as well as a coil. The coil is arranged between the inner pole and the outer pole and the coil wound directly onto the inner pole. According to the invention, the magnet assembly is used for actuating a closing element in a magnet valve.03-05-2009
20110260814CONTINUOUSLY WOUND SOLENOID COIL WITH FINAL CORRECTION FOR GENERATING A HOMOGENEOUS MAGNETIC FIELD IN THE INTERIOR OF THE COIL AND ASSOCIATED OPTIMIZATION METHOD - Disclosed is a device for generating a uniform magnetic field and to an optimization method for magnetic fields in a sample space, the method providing specifications for producing such a device. The device comprises at least one field coil for generating the magnetic field and the turns of the field coil are continuously wound around the sample space and the turn diameter of the field coil changes continuously at least in a portion of the field coil along the longitudinal axis of the sample space. To this end, the correction of non-uniformities in the magnetic field caused by the finite length of the field coil is distributed over the entire field coil. In this way, the device can be implemented more easily and precisely than with the correction coils used according to the prior art for correcting non-uniformities. Instead of the existing series expansion of the magnetic field, the method for optimizing the magnetic field employs a power function in conjunction with simulation of the magnetic field based on the optimization parameters. This function can be used in a larger volume than the series expansion.10-27-2011
20100315184Mounting Structure of Magnetic Member, Bonding Method of Magnetic Member and Magnetic Connection Member, Pickup Apparatus, and Disc Apparatus - A mounting structure of a magnetic member at least comprising: a magnetic member; and a magnetic coupling member provided with an adhesion securing portion configured to secure adhesive strength when bonded to the magnetic member.12-16-2010

Patent applications in class MAGNETS AND ELECTROMAGNETS

Patent applications in all subclasses MAGNETS AND ELECTROMAGNETS