Plural Magnets Patents (Class 335/306)
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Publication number: 20100052833Abstract: In forming magnetic blocks, a first permanent magnet may be lowered to the bottom of an upwardly open vessel, the vessel may be already filled or may be then filled with liquid and, while forcefully maintaining the first permanent magnet in that position, further permanent magnets are gradually inserted into the vessel in a direction perpendicular to their resulting joint contact surfaces, where the adjacent surfaces of the superimposed permanent magnets have an opposite polarity, while during insertion of a further permanent magnet, the liquid is drained from the space in the vessel under that inserted magnet, whereby the motion speed of the inserted magnet is controlled as it bears down on the permanent magnet lying beneath it.Type: ApplicationFiled: July 18, 2007Publication date: March 4, 2010Applicant: Ustav struktury a mechaniky hornin AV CR v.v.iInventors: Václav Zezulka, Pavel Straka, Václav Soukup
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Publication number: 20100052834Abstract: A magnetic coupler includes a first body, a second body and a plurality of magnetic elements. The first body has a first front side and a first backside. The first front side is formed with a plurality of positioning slots. The second body has a second front side and a second backside. The second backside is mounted on the first front side. The second body is formed with a plurality of positioning holes penetrating through the second body. Each magnetic element has a first portion and a second portion. The first portions of the magnetic elements respectively penetrate through the positioning holes so that the second portions of the magnetic elements are respectively embedded into the positioning slots.Type: ApplicationFiled: November 7, 2008Publication date: March 4, 2010Inventor: Chu-Hsiang FENG
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Patent number: 7671712Abstract: The invention disclosed is a method of levitating one or both ends of an object permanently or temporarily, or altering the distance between two objects or the momentum of an object by manipulating the direction of the magnetic field of a permanent or electromagnet.Type: GrantFiled: March 23, 2006Date of Patent: March 2, 2010Assignee: Ellihay CorpInventors: Todd S. Elliott, William F. Hayhurst
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Publication number: 20100045415Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: February 25, 2010Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20100045412Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: February 25, 2010Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20100045414Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: February 25, 2010Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20100045416Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: February 25, 2010Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20100045413Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: February 25, 2010Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Patent number: 7667562Abstract: A new class of fundamental devices and methods for their manufacture and use. The bulk magnetic field replicators of the present invention require no precision machining or alignment to accurately reproduce magnetic fields of any complexity, nor extreme positional stability to maintain superconductivity. Such bulk devices may be formed of either low or high critical temperature superconductive materials, but are particularly adapted to formation from high critical temperature materials.Type: GrantFiled: February 20, 1990Date of Patent: February 23, 2010Inventor: Roy Weinstein
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Patent number: 7663327Abstract: A permanent magnet focusing system includes an electron gun that provides an electron ribbon beam having an elliptical shape. A plurality of permanent magnets provide transport for the electron ribbon beam. The permanent magnets produce a non-axisymmetric periodic permanent magnet (PPM) focusing field to allow the electron ribbon beam to be transported in the permanent magnet focusing system.Type: GrantFiled: May 15, 2006Date of Patent: February 16, 2010Assignee: Massachusetts Institute of TechnologyInventors: Ronak J. Bhatt, Chiping Chen, Jing Zhou, Alexey Radovinsky
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Publication number: 20100026433Abstract: The invention relates to a magnet arrangement for magnetic levitation vehicles. Said arrangement comprises a magnetic back box and a plurality of magnetic poles that are connected to said back box and that have magnetic pole faces bordering on a common reference surface. According to the invention, the reference surface extends along an elastic line when the magnetic pole is in the unloaded state, said elastic line being inverse to the curvature of the surface that is obtained under a nominal load of the magnetic poles when the magnetic pole faces are in the unloaded state on a plane. The invention also relates to a method for producing said type of magnet arrangement.Type: ApplicationFiled: August 20, 2007Publication date: February 4, 2010Inventors: Peter Bugiel, Harald Pfannkuch, Wolfgang Hahn, Joachim Krämer
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Patent number: 7644489Abstract: A passive nanomagnet alignment method is described to self-align a membrane to another surface. The membrane and the surface each have a plurality of nanomagnets patterned on it, wherein the nanomagnets are magnetized based on an applied external magnetic field. The membrane is brought into close proximity and coarse alignment to the surface by a positioning mechanism (e.g., an actuation force), such that the nanomagnets on the membrane attract to and self-align with the nanomagnets on said surface based on the nanomagnet magnetizations.Type: GrantFiled: August 31, 2006Date of Patent: January 12, 2010Assignee: Massachusetts Institute of TechnologyInventors: William J. Arora, Fernando Castano, Anthony J. Nichol, George Barbastathis
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Publication number: 20100004716Abstract: An implantable magnet that can freely turn in response to an external magnetic field, thus avoiding torque and demagnetization on the implantable magnet. The implantable magnet can be combined with an electric switching function depending on the orientation of an external magnetic field, thus protecting an implanted coil and/or implant electronics against induction of over-voltage or performing an electric switching function for other various purposes. The magnetic switch may further include, for example, a first switching contact and a second switching contact. A magnetically soft body that includes an electrically conductive surface is shiftable between a first position where the body is in simultaneous contact with the first and second switching contacts, and a second position where the body is out of contact with at least one of the first and second switching contacts.Type: ApplicationFiled: July 6, 2009Publication date: January 7, 2010Applicant: MED-EL ELEKTROMEDIZINISCHE GERAETE GMBHInventors: Martin Zimmerling, Erwin Hochmair
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Patent number: 7641793Abstract: A plurality of magnets can be positioned around a container through the use of a plurality of holders that can be releaseably positioned around the container. Each holder has an area compatible in shape to the magnet to hold a magnet. The base of the holder which contracts the container is of a shape compatible to that of the container. There is at least one aperture on at least two sides of the holder. A strap is placed through the apertures and secured at each end. This secures the magnets to the container. The holder can have a flexible base portion or can itself be flexible. The holders can be at an angle of about 150° to about 210° to the axis of the container. The magnets can be positioned in various polar arrays around the container. The container will hold an aqueous liquid either in a static or flow condition. The container can be a bottle, pipe conduit and/or a filter within pipe conduit system.Type: GrantFiled: August 17, 2005Date of Patent: January 5, 2010Inventor: Paul Michael Pedersen
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Patent number: 7642887Abstract: An electro-magnetic driver transducer free of torque in the presence of an external magnetic field, of any direction and orientation (such as in a Magnetic Resonance Imaging environment). The transducer includes a housing. At least one coil is associated with the housing. A plurality of magnets within the housing are aligned along an axis in an anti-parallel orientation. The magnets are free to move along an axis, wherein vibration of the magnets causes vibration of the housing. The transducer may be, for example, fixed to an ossicle.Type: GrantFiled: February 5, 2007Date of Patent: January 5, 2010Assignee: MED-EL Elektromedizinische Geraete GmbHInventor: Martin Zimmerling
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Publication number: 20090309682Abstract: An array of permanent magnets is arranged to produce a uniform magnetic field for an NMR gyroscope cell. A magnet support structure has a plurality of sockets formed therein such that the plurality of sockets are located at the vertices of a rectangular parallelepiped. A magnet is mounted in each of the sockets with each magnet having a selected field strength and poling orientation. The magnets preferably are of identical structure and field strength. The magnets are preferably located at the vertices on a first side of the array in pairs having polarities directed away from one another and located at the vertices on a second side of the array in pairs having polarities directed toward one another.Type: ApplicationFiled: June 13, 2008Publication date: December 17, 2009Inventor: David B. Hall
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Publication number: 20090302984Abstract: A magnetic field generation system can comprise first (28a) and second (28b) magnetic flux concentrators each spaced apart to form a sample volume (30). The first (28a) and second (28b) magnetic flux concentrators can be formed of a material having a magnetic field saturation. A first set of auxiliary permanent magnets (10a, 10b) can be symmetrically oriented about a portion of the first magnetic flux concentrator (28a) and can be in substantial contact with the first magnetic flux concentrator. Similarly, a second set of auxiliary permanent magnets (1 Oc, 1 Od) can be symmetrically oriented about a portion of the second magnetic flux concentrator (28b) and can be in substantial contact with the second magnetic flux concentrator. Generally, the first set (10a, 10b) and second set (10c, 10d) of auxiliary permanent magnets can be remote from the sample volume (30).Type: ApplicationFiled: January 4, 2007Publication date: December 10, 2009Inventors: James C. Stephenson, Bruce K. Gale, Cynthia Furse
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Publication number: 20090302985Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: December 10, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20090295520Abstract: A magnetic structure configured to generate a compressed magnetic field. The magnetic structure may be advantageously employed in electro-mechanical and electro-magnetic devices.Type: ApplicationFiled: June 26, 2006Publication date: December 3, 2009Inventors: Eric J. Yarger, John Morrison, John G. Richardson
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Publication number: 20090295521Abstract: Field emission structures comprising a plurality of electric or magnetic field sources having magnitudes, polarities, and positions corresponding to a desired spatial force function where a spatial force is created based upon the relative alignment of a field emission structure and a complementary field emission structure. The magnetic field sources may be arranged according to a code having a desired autocorrelation function. Specific exemplary embodiments are described with magnetic field sources arranged in a ring structure. The ring structure may include one or more concentric rings of component magnets. Additional magnets may be included. Magnet polarities and/or spacings may be defined by the code Mechanical constraints may be employed to limit lateral motion. Exemplary codes are described and applied to magnetic field source arrangements. Specific codes found by the inventors are described.Type: ApplicationFiled: June 5, 2009Publication date: December 3, 2009Applicant: Cedar Ridge Research LLC.Inventors: Larry W. Fullerton, Mark D. Roberts, James Lee Richards
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Publication number: 20090295522Abstract: A compressed gas system component coupling device and method are described herein that use correlated magnets to enable a first component to be secured and removed from the second component. Some examples of components of the compressed gas system include a first stage regulator, a second stage regulator, an air pressure gauge, a dive computer, an air hose, a tank valve and a buoyancy control device. Furthermore the compression force created by the correlated magnets mounted on the first and second components create a hermetic seal therebetween.Type: ApplicationFiled: July 7, 2009Publication date: December 3, 2009Applicant: Cedar Ridge Research, LLC.Inventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090289749Abstract: First and second components may be precisely attached to form an apparatus. In an example embodiment, a first component includes a first field emission structure, and a second component includes a second field emission structure. The first and second components are adapted to be attached to each other with the first field emission structure in proximity to the second field emission structure such that the first and second field emission structures have a predetermined alignment with respect to each other. Each of the first and second field emission structures include multiple field emission sources having positions and polarities relating to a predefined spatial force function that corresponds to the predetermined alignment of the first and second field emission structures within a field domain. The first and second field emission structures are configured responsive to at least one precision criterion to enable a precision attachment.Type: ApplicationFiled: July 21, 2009Publication date: November 26, 2009Applicant: Cedar Ridge Research, LLC.Inventors: Larry W. Fullerton, Mark D. Roberts, Mitchell Williams
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Publication number: 20090289089Abstract: A harness is described herein that uses correlated magnets to enable objects to be secured thereto and removed therefrom. Some examples of such a harness include a construction work harness, a soldier harness, an astronaut harness, and a scuba harness (e.g., buoyancy compensator). For instance, the scuba harness can have different types of objects secured thereto and removed therefrom such as a weight pouch, a utility pocket, a dive light (flash light), a camera, a scuba lanyard, a navigation board, a depth gauge, a spear gun, or any type of military equipment.Type: ApplicationFiled: June 5, 2009Publication date: November 26, 2009Applicant: Cedar Ridge Research, LLC.Inventors: Larry W. Fullerton, Mark D. Roberts
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Patent number: 7622038Abstract: Two assembled bodies arranged as a pair are disposed around the outside periphery of a pipe to activate water flowing in the pipe. Each of the assembled bodies is composed of a cover and fluid activating bodies integrally fixed in the cover with an epoxy resin. Each of the fluid activating bodies is composed of a black radiation sintered body made by sintering the powder of a plurality of kinds of metal oxides at high temperature and an electromagnetic wave converging body for converging the electromagnetic wave radiated from the black radiation sintered body to a predetermined wavelength. The two covers are disposed around the outside periphery of the pipe, and fixing portions formed on both the sides of the covers are integrally fixed by fixtures, respectively.Type: GrantFiled: September 1, 2005Date of Patent: November 24, 2009Assignee: Japan System Planning Co., Ltd.Inventor: Katsuyuki Kumano
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Publication number: 20090284336Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: November 19, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Patent number: 7616983Abstract: A device for guiding a magnetic element has magnet holders that can be pivoted about vertical axes from an operating position to a rest position, such that a patient to be examined can be examined using imaging devices, having X-ray radiation sources and X-ray detectors respectively attached to C-arms.Type: GrantFiled: September 20, 2005Date of Patent: November 10, 2009Assignee: Siemens AktiengesellschaftInventors: Anton Nekovar, Hans-Joachim Reich
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Publication number: 20090273194Abstract: A magnetic gate latch has a multiplicity of permanent magnets arranged on a pair of disks with half of the magnets in mutual attraction and half of the magnets in mutual repulsion. These magnetic forces are used to brake and close a gate or door. One of the disks is made axially movable with respect to the other so as to assume mutual repulsion in one position and mutual attraction in a second position. The movable disk is attached to a gate or door closing member and the other disk is attached to the closing structure post or jamb. Magnetic forces in the repulsion position are used in the invention to reverse the movable disk from a mutual repulsion position to a mutual attraction position.Type: ApplicationFiled: March 17, 2009Publication date: November 5, 2009Inventor: Wayne Albert Patterson
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Publication number: 20090273423Abstract: A rotary actuator with a magnetically produced tactile sense is provided, in particular for a motor vehicle. The rotary actuator includes two plane-parallel permanent magnets, with the first magnet being arranged in a fixed position in a housing of the rotary actuator, and in which case the second magnet can be rotated with respect to the first magnet by a handle of the rotary actuator.Type: ApplicationFiled: April 30, 2009Publication date: November 5, 2009Inventors: Andreas KRAMLICH, Dieter WETH
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Publication number: 20090273424Abstract: 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.Type: ApplicationFiled: June 5, 2009Publication date: November 5, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Publication number: 20090273422Abstract: 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.Type: ApplicationFiled: January 23, 2009Publication date: November 5, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Patent number: 7612348Abstract: A voltage-isolating passageway for providing high voltage isolation between a component maintained at high DC voltage and a component maintained at a substantially lower voltage is described. The voltage-isolating passageway incorporates a transverse magnetic field across its passageway, which reduces the potential energy of charged particles (e.g., electrons) passing through the passageway. The voltage-isolating passageway includes a passageway and at least two magnets. The passageway has two openings and the two magnets are positioned along opposite and exterior surfaces of the passageway wherein the first and second magnets impose a magnetic field in a transverse direction with respect to a lengthwise axis of the passageway. In one embodiment, each of the passageways have small diameters and transfer gases at small flow rates.Type: GrantFiled: May 22, 2008Date of Patent: November 3, 2009Assignee: KLA-Technologies CorporationInventors: Alexander Jozef Gubbens, Niles Kenneth MacDonald, Mehran Nasser-Ghodsi, Rudy Flores Garcia, Doug Keith Masnaghetti
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Patent number: 7607430Abstract: A method of coupling the upper and lower section of a humidifier container used to humidify oxygen gas, using magnetic coupling means. A series of corresponding magnets around the container, located externally to the device or internally, secure the lower part or vessel to the upper part or cap. Using magnets opposing an attracted metal may he used in lieu of corresponding magnet to magnet attraction which requires the poles of the magnets be oriented with their poles to attract each other.Type: GrantFiled: April 18, 2007Date of Patent: October 27, 2009Assignee: Hana Consulting, Inc.Inventor: Mitchell G. Davis
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Publication number: 20090256451Abstract: The invention relates to an actuator device comprising a headpiece (1) with an adjuster mechanism for an actuating arm mounted to pivot on the headpiece into the actuated and open position and a housing (7) supporting the headpiece (1) with an interior for housing a linearly adjustable control rod connected to the adjuster mechanism (3) and connected to the actuator arranged in the housing (7). According to the invention, the housing (7) is in the form of an extrusion moulded hollow profile (8), the interior of which has a constant inner cross-section over the entire length thereof.Type: ApplicationFiled: May 11, 2007Publication date: October 15, 2009Applicant: INSTITUT FUR AUTOMATISIERUNG UND INFORMATIK GMBHInventors: Steffen Braune, Klaus-Dietrich Kramer
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Publication number: 20090251265Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090251263Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090251260Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090251264Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090251258Abstract: A system can comprise a screw and a nut, which are configured to move relative to each other. Each of the screw and the nut components can comprise one or more magnets configured to exert a repulsive force on one or more magnets of the other component as a result of the relative motion. Interactions between the one or more magnets of the screw and the one or more magnets of the nut can allow for conversion between linear motion and rotary motion. One or more tools can be used to aid in manufacturing the screw and/or the nut. In some embodiments additional components can aid in maintaining alignment of the screw and the nut.Type: ApplicationFiled: April 8, 2009Publication date: October 8, 2009Applicants: Oregon State UniversityInventors: Kenneth Rhinefrank, Alexandre F.T. Yokochi, Annette von Jouanne, Manfred Dittrich, Emmanuel Agamloh
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Publication number: 20090251262Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090251261Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Publication number: 20090251259Abstract: 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.Type: ApplicationFiled: May 8, 2009Publication date: October 8, 2009Applicant: CEDAR RIDGE RESEARCH LLCInventors: Larry W. Fullerton, Mark D. Roberts
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Patent number: 7598835Abstract: The present invention aims to provide a magnetic sensor provided with a magnetoresistive effect element capable of stably maintaining a direction of magnetization in a magnetic domain of a free layer. The magnetic sensor includes a magnetoresistive effect element provided with narrow zonal portions 11a . . . 11a including a pinned layer and a free layer. Disposed below both ends of the free layer are bias magnet films 11b . . . 11b composed of a permanent magnet that applies to the free layer a bias magnetic field in a predetermined direction and an initializing coil 31 that is disposed in the vicinity of the free layer and applies to the free layer a magnetic field having the direction same as that of the bias magnetic field by being energized under a predetermined condition.Type: GrantFiled: May 10, 2005Date of Patent: October 6, 2009Assignee: Yamaha CorporationInventors: Toshiyuki Oohashi, Yukio Wakui
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Publication number: 20090237080Abstract: A magnetic field generator includes a magnetic circuit of an open magnetic path in which a uniform magnetic field can be generated with a simpler structure. A nuclear magnetic resonance device equipped with this magnetic filed generator is also provided. The magnetic field generator of an open magnetic path type includes: a first permanent magnet and a second permanent magnet which are arranged sequentially in a reference direction with a predetermined distance therebetween while directing the direction of magnetization in the reference direction, and a third permanent magnet and a fourth permanent magnet which are arranged sequentially between the first permanent magnet and the second permanent magnet along the reference direction while being in contact with each other or being spaced apart from each other with a predetermined distance therebetween.Type: ApplicationFiled: July 31, 2007Publication date: September 24, 2009Applicants: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY, HITACHI METALS, LTD.Inventors: Hirokazu Kato, Norio Takahashi, Junichi Asaumi, Masaaki Aoki
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Publication number: 20090236219Abstract: A magnetron unit includes a plurality of first magnet elements each including first magnets which have the same polarity and are provided on two end portions of a yoke plate made of a magnetic material and a second magnet which has a polarity different from that of the first magnets and is provided on a middle portion of the yoke plate, a base plate on which a moving unit is placed to make each of the plurality of first magnet elements move in one direction, and a second magnet element which includes yoke plates made of a magnetic material and fixed to two end portions respectively, of the base plate, a magnet which has the same polarity as that of the second magnet and is placed on the yoke plate and a magnet which has the same polarity as that of the first magnet and is placed on the magnet.Type: ApplicationFiled: June 3, 2009Publication date: September 24, 2009Applicant: CANON ANELVA CORPORATIONInventors: Tetsuya Endo, Noel Einstein Abarra
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Patent number: 7593540Abstract: An electroacoustic transducer has a magnetic circuit unit including a plate-shaped yoke, first and second magnets juxtaposed on the yoke, and first and second top plates mounted on the respective tops of the first and second magnets. One end of the first magnet is magnetized to one of north and south poles. The other end of the first magnet is opposite in polarity to the one end. The second magnet is magnetized to polarities opposite to those of the first magnet. A magnetic gap is formed between the first and second top plates.Type: GrantFiled: June 13, 2008Date of Patent: September 22, 2009Assignee: Citizen Electronics Co., LtdInventor: Toshio Itakura
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Publication number: 20090219123Abstract: According to an aspect of an embodiment, a magnet unit for a magnetron sputtering system includes a base board, an inner magnet fixed to the base board and an outer magnet fixed to the base board. The outer magnet is fixed surround the inner magnet. At least one of a portion of the inner magnet or a portion of the outer magnet is displaceable on the base board.Type: ApplicationFiled: February 6, 2009Publication date: September 3, 2009Applicant: FUJITSU LIMITEDInventors: Akihiko Fujisaki, Atsushi Furuya, Nobuyoshi Yamaoka
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Publication number: 20090206972Abstract: A method and apparatus for dynamic magnetic field control using multiple magnets. Control methods and system means are described that allow dynamically changing the magnetic field generated at a point in space by a multiplicity of magnets.Type: ApplicationFiled: February 24, 2009Publication date: August 20, 2009Inventor: Ilker Tunay
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Patent number: 7570142Abstract: A permanent magnet for a particle accelerator and a magnetic field generator, in which Nd—Fe—B based magnets are used but are not demagnetized so easily even when exposed to a radiation, are provided. A permanent magnet for a particle accelerator is used in an environment in which the magnet is exposed to a radiation at an absorbed dose of at least 3,000 Gy. The magnet includes R (which is at least one of the rare-earth elements), B, TM (which is at least one transition element and includes Fe) and inevitably contained impurity elements. The magnet is a sintered magnet that has been magnetized to a permeance coefficient of 0.5 or more and that has a coercivity HcJ of 1.6 MA/m or more.Type: GrantFiled: February 20, 2004Date of Patent: August 4, 2009Assignee: Hitachi Metals, Ltd.Inventors: Ken Makita, Eiji Sugiyama, Masaaki Aoiki, Kaichi Murakami, Tadamichi Kawakubo, Eiji Nakamura
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Publication number: 20090189470Abstract: A flux-focused, shaped permanent magnet includes a body of magnetic material having multiple surface contouring to form a reduced flux side with convex surfaces and an increased flux side with concave surfaces. The surfaces develop high and low resistance external flux paths creating focused asymmetric flux fields. A magnetic unit having the shaped permanent magnet and a magnetic flux attracter or two shaped permanent magnets interconnected by two segmented permanent magnets and a kinetic device having a stationary stator ring, a rotor disc rotating within the stator ring and a multiplicity of the magnetic units on the stator ring and the rotor disc, are also provided.Type: ApplicationFiled: January 25, 2008Publication date: July 30, 2009Inventor: W. Thomas McClellan
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Patent number: 7567159Abstract: A non-contact apparatus removes translational energy (slows movement) of a first magnetic assembly when it is moved through the magnetic field of a second magnet. The first magnetic assembly contains a magnet that can rotate, such as a diametrically magnetized cylindrical magnet in a cylindrical cavity. Rotation of the first magnet does work against a predetermined drag. The apparatus also forms a non-contact magnetic coupling that holds a predetermined relative position. The apparatus can be used as a door catch that slows down and quietly stops a door at a predetermined position.Type: GrantFiled: February 3, 2005Date of Patent: July 28, 2009Inventor: John A. Macken