Patents Examined by Jennifer A. Poker
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Patent number: 6927667Abstract: A magnetic device is provided that may be employed with surface mount technology. In an advantageous embodiment, the magnetic device includes a magnetic core having a magnetic core half and a springable winding positioned about at least a portion of the magnetic core half. The springable winding includes a terminus biased against the magnetic core half.Type: GrantFiled: November 1, 2001Date of Patent: August 9, 2005Assignee: Tyco Electronics Power Systems, Inc.Inventors: Galliano R. Busletta, Robert J. Catalano, Paul J. Offer, Jr., Robert J. Roessler, Matthew A. Wilkowski, William L. Woods
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Patent number: 6924724Abstract: A method and apparatus for transformer bandwidth enhancement is disclosed. In one embodiment, a transformer is provided for use in a high frequency communication environment. In one configuration, the transformer is configured with one or more compensation networks to improve high frequency operation and to reduce insertion loss at all frequencies. The compensation networks may be designed, in combination with a transformer, to create an equivalent all-pass symmetric lattice network having a frequency response in the desired range. In one embodiment, the compensation networks comprise a capacitance creating device which, when cross-connected to the transformer, increases transformer bandwidth.Type: GrantFiled: January 24, 2003Date of Patent: August 2, 2005Assignee: Solarflare Communications, Inc.Inventors: Jorge Alberto Grilo, Larance B. Cohen
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Patent number: 6919788Abstract: An inductor assembly includes a coil or coils of insulated conductor material defining an inside volume, an inner core of magnetic core material located within the inside volume, and an outer core of magnetic core material including structure overlying the coil and inner core and having opposite inner walls facing polar ends of the coil and core, such that at least two magnetic gaps exist between ends of the inner core and the opposite inner walls of the outer core. A method for making the assembly is also disclosed.Type: GrantFiled: December 22, 2003Date of Patent: July 19, 2005Assignee: Tyco Electronics CorporationInventors: Jimmy D. Holdahl, Todd Settergren, Chad W. Gortmaker
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Patent number: 6919789Abstract: A connecting structure of choke coil, comprises a coil base composed of two halves forming an accommodating area within the two halves, and a coiling area beyond the two halves, and a corresponding symmetric connecting section extended from a solid section each on both sides of the coiling area, such that the coil base is installed onto a housing and constitutes an insulation with the housing to prevent a high-voltage electric leakage and comply with the requirements of high-voltage electric leakage tests.Type: GrantFiled: March 17, 2003Date of Patent: July 19, 2005Assignee: SZ Fong Electronics Co., LTDInventor: Kuo-Liang Lin
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Patent number: 6917274Abstract: A stacked coil device comprising: an inner electrode layer formed of at least two parts and having a non-magnetic electrode region and an inner magnetic region formed as one layer, the non-magnetic electrode region being provided with an opening at a center thereof and provided with an electrode pattern on at least one surface of an upper surface and a lower surface thereof and the inner magnetic region positioned at the center opening and a lateral surface of the non-magnetic electrode region; a cover layer in contact with both surfaces of the inner electrode layer; and an external electrode terminal electrically connected to the electrode pattern.Type: GrantFiled: October 1, 2003Date of Patent: July 12, 2005Assignee: Ceratech CorporationInventors: Soon-Gyu Hong, Myoung-Hui Choi, Sang-Eun Jang
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Patent number: 6914508Abstract: A transformer has a primary winding made from a first conducting trace formed on a first multilayer printed circuit board, and a secondary winding made from a second conducting trace formed on a second multilayer printed circuit board. The primary winding is magnetically coupled to the secondary winding. The windings are etched as traces in copper layers of the PC boards as spirals. The spiral of one copper layer is connected to the spiral of a different copper layer by a via, or vias, formed through the insulating layer of the PC board. The vias are drilled, cleaned, and plated with conducting material, for example copper. By using multiple layers, and by connecting spiral windings of each layer to the windings of the next layer by use of vias, any number of turns can be built into a primary winding, or into a secondary winding.Type: GrantFiled: August 15, 2002Date of Patent: July 5, 2005Assignee: Galaxy Power, Inc.Inventors: Andrew Ferencz, Gregory A. Zvonar, Bernhard Schroter, Gerald Miller, William Ng
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Patent number: 6909349Abstract: A system (27) for reducing the temperature of cooling oil for a power transformer (12) includes a heat exchanger (44) interposed in the cooling oil system. The heat exchanger (44) relies upon a liquid-to-liquid exchange of heat from the heated oil to a coolant flowing through the heat exchanger. In one embodiment, the coolant provided to the heat exchanger is obtained from an absorption chiller (65). Heat energy is provided to the chiller (65) from a heat storage device (80). In a specific embodiment, the heat storage source (80) can be a phase change material device. In a preferred cooling system, a programmable controller (55) determines the activation and operation of the system. The controller (55) can sense transformer or cooling oil temperature to trigger activation. In a preferred embodiment, the controller (55) compares a current temperature history against a temperature profile to anticipate increased cooling requirements.Type: GrantFiled: November 17, 2000Date of Patent: June 21, 2005Assignee: Trexco, LLCInventors: Robert L. Longardner, Anthony M. Visnesky, Jr.
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Patent number: 6906610Abstract: An inductor element 100 capable of functioning properly on a substrate includes two similarly shaped conductors such as spiral conductors 120, 122 formed on the surface of a semiconductor substrate 110. The upper conductor 120 and the lower conductor 122 have substantially the same shape, and the inner end of the conductor 120 is connected electrically with the outer end of the conductor 122. The outer and inner ends of the conductor 120 are connected with lead wires 130, 132, respectively, and the lead wire 132 connected to the inner end is led between the lower conductor 122 and the semiconductor substrate 110 to the periphery of the substrate.Type: GrantFiled: July 6, 2000Date of Patent: June 14, 2005Assignee: Niigata Seimitsu Co., Ltd.Inventors: Akira Okamoto, Takeshi Ikeda
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Patent number: 6903641Abstract: The present invention is characterized in that, in a powder magnetic core obtained by compaction of an iron-based magnetic powder covered with an insulation film, a saturation magnetization Ms is Ms?1.9 T in a 1.6 MA/m magnetic field; a specific resistance ? is ??1.5 ??m; a magnetic flux density B2k is B2k?1.1 T in a 2 kA/m magnetic field; and a magnetic flux density B10k is B10k?1.6 T in a 10 kA/m magnetic field. In accordance with the present invention, it has been possible to industrially carry out compacting iron-based magnetic powders under remarkably high compacting pressures. As a result, high-performance powder magnetic cores are obtained which have a high density, and which are good in terms of the specific resistance and magnetic permeability.Type: GrantFiled: January 17, 2002Date of Patent: June 7, 2005Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Mikio Kondo, Shin Tajima, Takeshi Hattori, Yoji Awano, Hiroshi Okajima
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Patent number: 6903646Abstract: An inductor device includes first and second spiral conductors. First and second external connection terminals are formed in inner peripheral ends of the first and second spiral conductors, respectively. A third conductor connects an outer peripheral end of the first spiral conductor and that of the second spiral conductor to each other.Type: GrantFiled: March 31, 2004Date of Patent: June 7, 2005Assignee: Shinko Electric Industries Co., Ltd.Inventor: Eiji Takaike
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Patent number: 6903648Abstract: An oscillating inductor has a symmetrical double-E core, which has two geometrically identical core windows, a cuboid center limb and two cuboid outer limbs. The double-E core is designed such that a longitudinal cross sectional area of the center limb is greater than 90 mm2, with a longitudinal cross section being regarded as a cross section which would separate the double-E core into two single E-cores, and the cross section being at right angles to the longitudinal cross section such that the double-E can be identified in the cross section, with the double-E core being located in a component volume of less than 26.5 mm×26.5 mm×15 mm (width×depth×height).Type: GrantFiled: January 9, 2004Date of Patent: June 7, 2005Assignee: Vogt Electronic AGInventors: Michael Baumann, Johann Winkler
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Patent number: 6900717Abstract: A bobbin for hybrid coils in planar magnetic components including an outer bobbin component configured to hold planar magnetic circuits and an inner bobbin component configured to hold a conventional winding of a multitude of substantially round-section insulated conductor wires.Type: GrantFiled: September 12, 2001Date of Patent: May 31, 2005Assignee: Payton LTDInventors: Alexander Timashov, Amos Siksik
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Patent number: 6894598Abstract: An inductor has a laminated structure in which an insulating layer and a wiring layer are laminated alternately on a semiconductor substrate. The laminated structure includes at least two wiring layers and an insulating layer interposed between them. A first wiring layer has a first winding part and a second winding part in the same plane, adjacent each other, and wound. A second wiring layer has a wiring part having a single path from one terminal to the other. The first and second winding parts are electrically connected to the wiring part. When a voltage is applied between one terminal of the first winding part and one terminal of the second winding part, currents flow in the first and second winding parts in opposite directions.Type: GrantFiled: July 8, 2003Date of Patent: May 17, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Tetsuya Heima
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Patent number: 6888438Abstract: Novel designs for printed circuit board transformers, and in particular for coreless printed circuit board transformers designed for operation in power transfer applications, in which shielding is provided by a combination of ferrite plates and thin conductive sheets.Type: GrantFiled: October 28, 2002Date of Patent: May 3, 2005Assignee: City University of Hong KongInventors: Ron Shu Yuen Hui, Sai Chun Tang
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Patent number: 6885277Abstract: An externally adjustable RF impedance matching mechanism comprises an upper lid and a base containing a circuit element board therebetween. One or more than one precise adjustment device for adjusting impedance value are provided under the upper lid. Impedance adjustment is carried out by manually turning setting screws associated with the aid of spring force. Heat conductive material is coated between the circuit board and the base so that the device is able to operated at a high power. The expensive material such as ceramic is used in forming the coil board only so that material and the production cost are low.Type: GrantFiled: September 12, 2002Date of Patent: April 26, 2005Inventor: Kung-Chao Tung
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Patent number: 6878889Abstract: A device is provided to prevent unauthorized opening of the garage door by interrupting the flow of electrical power to the automatic garage door opener. A power-interrupting switch, suspended from a desired overhead location in the garage, is interposed between the power source and garage door opener to selectively interrupt or complete the flow of electricity to the garage door opener. By interrupting the electrical flow, the garage door opener is deactivated and will remain unresponsive to a possible unauthorized remote control signal.Type: GrantFiled: July 15, 2002Date of Patent: April 12, 2005Inventors: Richard R. Horst, Sandra L. Horst
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Patent number: 6878893Abstract: A first stationary contact is provided on the base body. A second stationary contact is provided on the base body. A conductive click spring is disposed over the first stationary contact and the second stationary contact, so as to be always electrically connected to the first stationary contact and so as to be away from the second stationary contact in a neutral position thereof. A push button includes a head portion which is depressed by an operator, and an actuator which pushes the click spring so as to be abutted against the second stationary contact when the head portion is depressed. The head portion and the actuator is integrally formed from rubber having elastic restorability.Type: GrantFiled: March 28, 2002Date of Patent: April 12, 2005Assignee: Mitsumi Electric Co., Ltd.Inventors: Toshiyuki Tanaka, Kazunori Hamasaki
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Patent number: 6876288Abstract: A new type of coil magnet in which the plane of each turn of the conducting coil is rotated with respect to the central axis. This results in the induced magnetic field being oriented off the central axis. A set of two such disk assemblies are preferably nested, with the current flowing in opposite directions within the two assemblies. This results in the components of the two induced magnetic fields lying along the center axis canceling each other out, leaving only a purely transverse magnetic field. In addition, variations in the angular offset of the nested coils can be used to create a magnetic field having almost any orientation. Three or more such nested disk assemblies can be employed to strengthen and adjust the transverse magnetic field.Type: GrantFiled: March 24, 2003Date of Patent: April 5, 2005Inventors: Andrey V. Gavrilin, Mark D. Bird
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Patent number: 6873239Abstract: A bulk amorphous metal inductive device comprises a magnetic core having at least one low-loss bulk ferromagnetic amorphous metal magnetic component forming a magnetic circuit having an air gap therein. The component comprises a plurality of similarly shaped layers of amorphous metal strips bonded together to form a polyhederally shaped part. The device has one or more electrical windings and is easily customized for specialized magnetic applications, e.g. for use as a transformer or inductor in power conditioning electronic circuitry employing switch-mode circuit topologies and switching frequencies ranging from 1 kHz to 200 kHz or more. The low core losses of the device, e.g. a loss of at most about 12 W/kg when excited at a frequency of 5 kHz to a peak induction level of 0.3 T, make it especially useful at frequencies of 1 kHz or more.Type: GrantFiled: November 1, 2002Date of Patent: March 29, 2005Assignee: Metglas Inc.Inventors: Nicholas J. Decristofaro, Gordon E. Fish, Ryusuke Hasegawa, Carl E. Kroger, Scott M. Lindquist, Seshu V. Tatikola
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Patent number: 6870457Abstract: A symmetrical stacked inductor comprising a plurality of conductive layers using at least one conductive line formed out of a symmetrical and geometric conductive layer and having at least one inter-metal dielectric layer for isolating each conductive layer, and wherein the conductive line does not intersect; and a plurality of vias placed between the inter-metal dielectric layers for electrical conduction.Type: GrantFiled: August 12, 2003Date of Patent: March 22, 2005Assignee: National Central UniversityInventors: Wei-Zen Chen, Wen-Hui Chen