Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7704438 | Process for producing a permanently magnetic molding A method for producing a permanently-magnetic part, made from a polymeric support material filled with magnetic filler materials on the basis of silicon caoutchouc, hot-vulcanized from at least one starting material, in which the at least one starting material of th... | 04/27/2010 |
| 7425295 | Production method of tone wheel A Production method of tone wheel made of elastic material to be fixed to a rotating member in which a magnetic encoder is assembled in combination of the tone wheel and a magnetic sensor provided at a fixed member. The tone wheel is produced by using newly designed... | 09/16/2008 |
| 7384571 | Ferrite magnet powder bond magnet A ferrite magnetic powder for bond magnet that experiences only small decrease in coercivity when molded into a bond magnet is provided, which is a ferrite magnetic powder that includes an alkaline-earth metal constituent and exhibits a decrease in coercivity of not... | 06/10/2008 |
| 7366454 | Long magnet, production method thereof, magnet roller and image forming device The long magnet includes a magnet block made of a mixture of rare earth magnetic powder, thermoplastic resin particles, fluidity additive, pigment, wax and charge control agent, and a reinforcing member to reinforce the magnet block. At least part of the reinforcing... | 04/29/2008 |
| 7340825 | Method of making a transformer A transformer and method of making includes first half primary and secondary windings as metallic circuits that are etched on a metallic cladding of a first liquid crystal polymer (LCP) sheet. Secondary windings are positioned in spaced relation to the primary windi... | 03/11/2008 |
| 7328500 | Method of manufacturing laminated polar anisotropic hybrid magnet Disclosed is a method of manufacturing a laminated polar anisotropic hybrid magnet, which includes separately mixing first permanent magnet powders having low magnetic properties and second permanent magnet powders having high magnetic properties with a thermoplasti... | 02/12/2008 |
| 7312550 | Architecture for electric machine In one aspect, an alternator is described which includes a current control apparatus including a stator winding and a control winding, wherein current control in the control winding regulates the stator winding. In another aspect, a gas turbine engine includes a mul... | 12/25/2007 |
| 7288319 | Forming a chemically cross-linked particle of a desired shape and diameter Chemically cross-linked polymeric particles are formed using mechanical rather than chemical processes, facilitating production of small-diameter particles in a manner largely independent of the viscosity or density of the polymer. For example, an uncross-linked res... | 10/30/2007 |
| 7288923 | Voltage-limited electric machine An electric alternator having a rotor, stator and at least one winding in the stator adapted to conduct a current, the machine also having and first and second magnetic circuits around different portions of the winding which may be configured relative to one another... | 10/30/2007 |
| 7261834 | Tunable magneto-rheological elastomers and processes for their manufacture Novel magnetorheological elastomer compositions are provided. The magnetorheological elastomers (MREs) may have aligned or randomly arranged magnetizable particles in a thermoset or thermoplastic matrix. The magnetizable particles may be coated to reduce corrosion a... | 08/28/2007 |
| 7189338 | Image forming apparatus and developing device therefor In a developing device for an image forming apparatus of the present invention, use is made of a magnetic molding produced by compression-molding a magnet compound material in a magnetic field. The magnet compound material contains, in addition to magnetic powder an... | 03/13/2007 |
| 7181830 | Process of manufacturing a flux ring for an electric motor A method of manufacturing a flux ring for an electric motor which has a ring with an anchoring mechanism. The ring is placed inside of a die. A first isotropic magnetic material is added into the die such that the anchoring mechanism secures the first isotropic magn... | 02/27/2007 |
| 7160496 | Thermoplastic compositions containing metal material Thermoplastic compositions containing metal materials and a method for preparing the same. The compositions are formed into particles having diameters suitable for a rotational thermoforming processing. The compositions are particularly applicable for use in slush m... | 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 |
| 7126313 | Architecture for electric machine The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be us... | 10/24/2006 |
| 7066472 | Conductive seal as well as a method and apparatus for its production A conductive seal that is formed on a first sealing surface by extruding an elastically curing material intermixed with conductive particles is in addition intermixed with magnetic particles. After applying the material to the first sealing surface, its cross sectio... | 06/27/2006 |
| 7053134 | Forming a chemically cross-linked particle of a desired shape and diameter Chemically cross-linked polymeric particles are formed using mechanical rather than chemical processes, facilitating production of small-diameter particles in a manner largely independent of the viscosity or density of the polymer. For example, an uncross-linked res... | 05/30/2006 |
| 7021946 | Connector integrated with a LED element An elastic connector integrated with electrodes on at least either a chip-type LED or a circuit board facing each other is sandwiched and compressed by the chip-type LED and the circuit board so as to provide an electric connection. The thus obtained integrated conn... | 04/04/2006 |
| 6995321 | Etched hole-fill stand-off An assembly is disclosed that includes an etched hole-fill standoff; a tooling plate contacting the etched hole-fill stand-off, the stand-off and tooling plate being aligned to each other; a device having holes to be filled removably contacting the stand-off, the st... | 02/07/2006 |
| 6973720 | Method for manufacturing a connector integrated with a LED Method for manufacturing an elastic connector, integrated with an electrode of at least either a chip-type LED or a printed circuit board on which a LED element is directly mounted and to which the LED is electrically connected. The LED-integrated connector can subs... | 12/13/2005 |
| 6971409 | Method and apparatus for the treatment of fluids A flow pipe and one or more permanent magnets placed in or on the flow pipe, each permanent magnet presenting at its axial ends an infinite divergence of the magnetic field it generates. Fluid is treated by flowing through a flow pipe equipped with at least one such... | 12/06/2005 |
| 6965183 | Architecture for electric machine The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be us... | 11/15/2005 |
| 6921505 | Hole filling using an etched hole-fill stand-off An assembly is disclosed that includes an etched hole-fill standoff; a tooling plate contacting the etched hole-fill stand-off, the stand-off and tooling plate being aligned to each other; a device having holes to be filled removably contacting the stand-off, the st... | 07/26/2005 |
| 6844378 | Method of using triaxial magnetic fields for making particle structures A method of producing three-dimensional particle structures with enhanced magnetic susceptibility in three dimensions by applying a triaxial energetic field to a magnetic particle suspension and subsequently stabilizing said particle structure. Combinations of direc... | 01/18/2005 |
| 6694602 | Method of making a pole piece for an MRI A method is presented for manufacturing laminate tile metal pole pieces for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular arra... | 02/24/2004 |
| 6649115 | Method of manufacturing interconnection components with integral conductive elastomeric sheet material A method of forming an interconnection component with integral conductive elastomeric sheet material, comprising providing a connector frame defining an opening, casting uncured elastomeric conductive polymer interface (ECPI) material onto the connector f... | 11/18/2003 |
| 6545578 | Centering magnet for deflection yokes and process for producing same The invention provides a deflection yoke having two centering magnets mounted thereon for the adjustment of centering. Each of the centering magnets is molded in an annular form from a resin material containing a finely divided magnetic material, the cent... | 04/08/2003 |
| 6517744 | Curing composition for forming a heat-conductive sheet, heat-conductive sheet, production thereof and heat sink structure A heat-conductive sheet comprising a cured or semi-cured binder wherein a carbon fiber is orientated in the direction of the thickness of the heat-conductive sheet. This heat-conductive sheet exhibits a high anisotropic heat conductivity along the directi... | 02/11/2003 |
| 6498674 | Rotating element sheet material with generalized containment structure The present invention relates to rotating element sheet material with a generalized containment structure and methods of fabricating such rotating element sheet material, where the rotating element sheet material comprises a fibrous matrix, a plurality of... | 12/24/2002 |
| 6464894 | Magnetic film and a method for the production thereof The invention relates to hard magnetic films made of a polymer matrix and hard magnetic powder particles distributed therein. The films have a thickness of preferably 100 to 500 μm and are flexible. They can be produced by using a casting method and are ... | 10/15/2002 |
| 6402977 | Composition for resin magnet, magnetic member using same and process for producing said magnetic members There are disclosed a composition for resin magnets which comprises a thermoplastic resin and magnetic powders and which, when determined in a heated molten state, has specific viscosity characteristics characterized in that the almost linear line which i... | 06/11/2002 |
| 6365078 | Production process for ring shaped resin bonded magnet There is provided a process of producing a ring shaped resin bonded magnetic member by molding a feed mixture 24 which contains a lubricant and a magnetic powder composite made of magnetic powder and a heat curable resin composition which is in a solid st... | 04/02/2002 |
| 6290868 | Field-structured material media and methods for synthesis thereof The present application is directed to a new class of composite materials, called field-structured composite (FSC) materials, which comprise a oriented aggregate structure made of magnetic particles suspended in a nonmagnetic medium, and to a new class of... | 09/18/2001 |
| 6287505 | Self-tuning material and method for manufacturing the same Self-tuning materials which can efficiently emit or receive radio waves in spite of being simple in their construction and small in their dimension, and are applied to patch antenna, wave directors or the like. Metallic chips containing two or more kinds ... | 09/11/2001 |
| 6190573 | Extrusion-molded magnetic body comprising samarium-iron-nitrogen system magnetic particles This invention is directed to an extrusion-molded magnet comprising a samarium-iron-nitrogen material, which is novel and capable of exhibiting excellent magnetic properties, i.e., samarium-iron-nitrogen system magnetic particles excellent in magnetic pro... | 02/20/2001 |
| 6149857 | Method of making films and coatings having anisotropic conductive pathways therein An anisotropically-conductive film or a substrate having a surface coated with an anisotropically-conductive coating, said film or coating being formed by solidifying a composition comprising (i) a solidifiable ferrofluid composition, the ferrofluid comprising... | 11/21/2000 |
| 6123892 | Variable orientation magnet molding tool A magnet molding tool for controlling the orientation of magnetic particles in a polymer bonded magnet during injection molding. A magnet mold has a mold cavity. A flux generator is connected to the magnet mold for applying a magnetic field in the cavity.... | 09/26/2000 |
| 6106759 | Variable orientation magnet molding tool A magnet molding tool for controlling the orientation of magnetic particles in a polymer bonded magnet during injection molding. The tool has magnet mold having a mold cavity. A flux generator is connected to the magnet mold. The flux generator applies a ... | 08/22/2000 |
| 6097531 | Method of making uniformly magnetized elements for a gyricon display A method of forming magnetized rotating elements for a rotating element display where all the elements are magnetized in the same orientation is provided. First, at least two planar streams of hardenable liquids flowing in substantially the same direction... | 08/01/2000 |
| 6007758 | Process for forming device comprising metallized magnetic substrates The invention provides an improved process for fabricating devices containing metallized magnetic ceramic material, such as inductors, transformers, and magnetic substrates. In particular, the unique vias utilized in the process of the invention allow fab... | 12/28/1999 |
