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| Number | Title | Issue Date |
| 8179219 | Field 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 correlati... | 05/15/2012 |
| 8174346 | Portable magnetizer systems Portable magnetizer systems designed for on-site use, related to magnetizing magnetizable sheets, enclosed in a case which is hand-carryable. ... | 05/08/2012 |
| 7868721 | Field 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 correlati... | 01/11/2011 |
| 7839244 | System and method for disabling a field emission structure 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 correlati... | 11/23/2010 |
| 7821365 | Permanent magnet magnetizing apparatus and permanent magnet magnetizing method To provide a magnetizing apparatus and magnetizing method in which, even in preparation of a ring-shaped permanent magnet having a narrow magnetization pitch with multiple poles magnetized on an extremely small diameter, sufficient magnetization and high magnetizati... | 10/26/2010 |
| 7804387 | System 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 correlati... | 09/28/2010 |
| 7746203 | Thermodynamic cycles One embodiment disclosed herein is an apparatus for performing a thermodynamic cycle comprising: a sample that exhibits temporary magnetic remanence; and a magnetisation apparatus for magnetising the sample, wherein the magnetisation apparatus is operable, during a ... | 06/29/2010 |
| 7728706 | Material magnetizer systems A system for improved magnetization of flexible magnetic sheet material, such as magnetic rubber. More particularly, this invention relates to providing a system for magnetization of pre-printed flexible magnetic sheet material. ... | 06/01/2010 |
| 7719395 | Magnetizer and magnetizing method A magnetizing coil generates a magnetic field to magnetize a magnet in a magnetizing area, in which a direction of the magnetic field is generally parallel to a magnetization direction of the magnet. A magnetizing yoke holds the magnet and is made of a magnetic mate... | 05/18/2010 |
| 7679480 | Method for magnetizing casing string tubulars A method for magnetizing a wellbore tubular includes a positioning a wellbore tubular substantially coaxially in a plurality of longitudinally spaced magnetizing coils deployed on a frame. The coils are selectively connected and disconnected from electrical power su... | 03/16/2010 |
| 7679481 | Magnetized casing string tubulars A stack of magnetized casing tubulars includes a plurality of magnetized wellbore tubulars each of which includes a plurality of north and south magnetic poles imparted to a corresponding plurality of longitudinal positions along the tubulars. The plurality of wellb... | 03/16/2010 |
| 7592889 | Anisotropic bond magnet for four-magnetic-pole motor, motor using the same, device for orientation processing of anisotropic bond magnet for four-magnetic-pole motor To realize an anisotropic bonded magnet that reduces cogging torque without lowering output torque. The present invention provides a hollow cylindrically shaped anisotropic bonded magnet for use in a 4-pole motor, formed by molding anisotropic rare-earth magn... | 09/22/2009 |
| 7545249 | Magnetizing fixture with insulated core A magnetizing fixture is provided for connection to an electrical power supply. Electrically conductive elements fit within channels connecting top and bottom surfaces of an electrically conductive core. One end of each electrically conductive element connects to a ... | 06/09/2009 |
| 7538650 | Apparatus and method for magnetizing casing string tubulars An apparatus for magnetizing a wellbore tubular includes a plurality of co-axial magnetizing coils deployed on a frame. The coils are typically deployed about a track on which the tubular may be traversed. Exemplary embodiments may further include a magnetic field s... | 05/26/2009 |
| 7501921 | Temperature controlled magnetic roller A magnetic roller may comprise a magnetized outer surface and an internal chamber. A temperature control system may be in communication with the internal chamber, and a fluid capable of heat transfer may circulate within the internal chamber and the temperature cont... | 03/10/2009 |
| 7498914 | Method for magnetizing ring magnet and magnetic encoder An insert member (42) having an identical permeability is fitted in the circular center hole(41a) of a magnetic ring (41) which is then fitted in the circular hollow section (43a) of a fitting-over member (43) having ... | 03/03/2009 |
| 7415756 | Magnetizing method using a magnetizing jig and method of assembling an electric compressor by using the jig and the magnetizing method In a method for assembling an electric compressor which contains a rotor having built-in magnets, magnets in a pre-magnetization state are inserted into a plurality of slots of a magnetizing jib made with a nonmagnetic material. After magnetizing the magnets, the ma... | 08/26/2008 |
| 7391327 | Magnetic detacher with open access Various embodiments of a magnetic detacher with open access are described. In one embodiment, the magnetic detacher may include magnet assembly to provide open access to a hard tag and a magnetic field sufficient to disengage a clamping mechanism of the hard tag. Ot... | 06/24/2008 |
| 7362200 | Seal arrangement with encoder and magnetization head for the encoder The invention relates to a seal arrangement for sealing off at least one radial interspace between at least one bearing ring which can rotate and at least one rotationally fixed bearing ring. The seal arrangement is provided with at least a first carrier, the first ... | 04/22/2008 |
| 7354021 | Magnet for an ionic drive for space vehicles A toroidally shaped magnetic device with distortion-free exit and access ports provides toroidal magnetic ionic drive systems for vehicles that achieve a more operationally efficient, uniform and stronger radial magnetic field. This is accomplished by magnetizing a ... | 04/08/2008 |
| 7345560 | Method and apparatus for magnetizing a permanent magnet A method of making a permanent magnet body is provided. The method includes providing a first precursor body comprising a plurality of blocks and magnetizing the first precursor body to form a first permanent magnet body. A recoil magnetization pulse may be applied ... | 03/18/2008 |
| 7324320 | Device and a method for magnetizing a magnet system A device for magnetizing a magnet system preferably having several pulse-generator circuits which are mutually arranged so that their magnetic fields superimpose in a cumulative manner. Each pulse-generator circuit includes a capacitor element, a magnetization coil ... | 01/29/2008 |
| 7300695 | Alignable diffractive pigment flakes Diffractive pigment flakes are selectively aligned to form an image. In one embodiment, flakes having a magnetic layer are shaped to facilitate alignment in a magnetic field. In another embodiment, the flakes include a magnetically discontinuous layer. In a particul... | 11/27/2007 |
| 7261023 | Bit holder device Provided is a bit holder device which is capable of driving a screw into a workpiece, while holding the screw having a groove in which a bit body is inserted, and which makes it possible to change the bit body without removing it from a chuck of an electric tool, et... | 08/28/2007 |
| 7258915 | Flake for covert security applications Covert flakes having one or more symbols and/or a selected shape are used in a composition, such as ink or paint, to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the covert flakes are covert pigment f... | 08/21/2007 |
| 7241489 | Opaque flake for covert security applications Opaque flakes, such as pigment or bright flake used in paints and inks, have a selected shape and/or other indicia to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the opaque covert flakes match the vi... | 07/10/2007 |
| 7239223 | Enhancement magnetizer for magnetic resonance imaging screening A method and apparatus for enhancing detection of a ferromagnetic threat object by magnetizing the threat object with a separate magnetic field, prior to scanning of the subject by a ferromagnetic-detecting sensor system. ... | 07/03/2007 |
| 7222034 | In-circuit measurement of saturation flux density Bsat, coercivity Hc, and permiability of magnetic components using a digital storage oscilloscope An oscilloscope performs an in-circuit measurement of voltage across, and current through, a core winding of an inductor, and derives the actual B and H values with n number of turns, receives data indicative of the magnetic length of the circuit, and plots the B_H ... | 05/22/2007 |
| 7205873 | Method of and an apparatus for magnetising a plurality of adjacent portions of magnetisable material A method of magnetizing members of magnetizable material (210) including presenting a magnetizer head to a circular array of the members (210) mounted on a rotor plate (200) of an electrical machine. The magnetizer head includes a circular array... | 04/17/2007 |
| 7204177 | Magnetic device for attracting and retaining fasteners A magnetic device for attracting and retaining a fastener which has a bit, a generally ring-shaped keeper having a bottom surface, at least some portion of which bottom surface is magnetized, at least one pair of magnets, each pair of magnets having two magnets with... | 04/17/2007 |
| 7196894 | Method and a device for demagnetising objects The method according to the invention for demagnetization is effected in two separate steps. Firstly magnetically hard locations, such as weld seams, pressure locations etc., of an object to be demagnetized is pre-treated locally with high fields by way of choke coi... | 03/27/2007 |
| 7172123 | Combined data reader and electronic article surveillance (EAS) system An integrated data reader and electronic article surveillance (EAS) system, and methods of operation. In one configuration, a data reader such as a bar code scanner is equipped with an EAS deactivation module disposed behind the scanner surface preferably downstream... | 02/06/2007 |
| 7170414 | Systems and methods for optical reading and EAS tag sensing and deactivating at retail checkout Methods of operation of a data reader and security tag deactivation system whereby a data reader such as a barcode scanner is equipped with EAS deactivation coils or modules disposed in the vicinity of the read volume or generally proximate thereto and the system is... | 01/30/2007 |
| 7160196 | Identification device A tray (10) for supplying coded golf balls (50) to the tee (41) of a golf driving range comprises a first zone (11) for receiving golf balls, one of which is selected to be played by moving it by means of a club over a barrier (14)... | 01/09/2007 |
| 7136765 | Buried object locating and tracing method and system employing principal components analysis for blind signal detection A blind locating system for finding and tracing buried objects such as utility lines, conductive pipes and sondes. A sensor array is coupled to a signal processor, which determines a field vector for one or more buried objects by producing a data signal representing... | 11/14/2006 |
| 7132947 | Systems and methods for data reading and EAS tag sensing and deactivating at retail checkout Methods of operation of a data reader and security tag deactivation system whereby a data reader such as a barcode scanner is equipped with EAS deactivation coils or modules disposed in the vicinity of the read volume or generally proximate thereto and the system is... | 11/07/2006 |
| 7112907 | Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets A stator and armature assembly 12 is provided for a permanent magnet DC motor. The assembly includes an armature 13 having a lamination core 14 and windings 15, and a stator structure 16 associated with the armature. The armature i... | 09/26/2006 |
| 7079345 | Demagnetization of magnetic media for data storage device using gradually reduced magnetic field Demagnetizing magnetic media for recording data in a data storage device includes placing the magnetic media in a magnetic field at a first strength, and gradually reducing the magnetic field to a second strength to essentially eliminate net magnetization in the mag... | 07/18/2006 |
| 7071591 | Electromagnetic circuit and servo mechanism for articulated cameras An electromagnetic circuit that may be advantageously employed in an articulated camera, such as a CCTV camera, as a part of a servo mechanism to directly drive the camera and optical lens assembly, for example, in the pan and/or tilt axes. In one embodiment, the co... | 07/04/2006 |
| 7061353 | Magnetizing fixture with insulated core A magnetizing fixture is provided for connection to an electrical power supply. Electrically conductive elements fit within channels connecting top and bottom surfaces of an electrically conductive core. One end of each electrically conductive element connects to a ... | 06/13/2006 |
