Patents Issued in January 12, 2010
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Patent number: 7646244Abstract: A unity gain buffer is provided. The unity gain buffer includes two complementary pairs of emitter followers and two bias current sources. The top bias current source is arranged to provide a bias current so that, if the input voltage is greater than zero, the bias current provided by the top current source increases at the input voltage increases. The bottom current source is arranged to provide a bias current so that, if the input voltage is less than zero, the bias current provided by the bottom current source decreases as the input voltage decreases.Type: GrantFiled: July 24, 2008Date of Patent: January 12, 2010Assignee: National Semiconductor CorporationInventors: Chang Chia Hsiao, Dinh Nguyen
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Patent number: 7646245Abstract: An amplifier includes: a single-stage or multiple-stage variable gain amplifier that amplifies an input signal with a controlled gain; a AGC control circuit that detects the peak level of a signal outputted from the variable gain amplifier in the final stage, converts the resultant signal to a digital signal, and outputs an AGC control signal for controlling the gain of the variable gain amplifier based on the converted digital signal; an EVR control circuit that outputs an EVR control signal according to a signal of setting an attenuation value or an amplification value for EVR inputted from an electronic variable resistor control terminal; and a gain control circuit that controls the gain of the variable gain amplifier in accordance with at least one of the AGC control signal and the EVR control signal. The occurrence of “popping” sounds caused by differences in DC voltage due to switching between an AGC circuit and an electronic variable resistor circuit can be suppressed.Type: GrantFiled: October 22, 2007Date of Patent: January 12, 2010Assignee: Panasonic CorporationInventors: Masato Nakakita, Makoto Yamamoto
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Patent number: 7646246Abstract: A semiconductor device includes a phase compensation circuit 6 using a MOS capacitor with a structure in which an insulating film is disposed between a gate electrode formed on a semiconductor substrate and a diffusion layer. The phase compensation circuit includes first and second MOS capacitors 14, 15. A gate electrode terminal of the first MOS capacitor is connected equivalently to a diffusion layer terminal of the second MOS capacitor that is a terminal opposite to the gate electrode terminal. A potential difference generating element 16 that generates a potential difference by allowing a current to flow therethrough is connected between a diffusion layer terminal of the first MOS capacitor and a gate electrode terminal of the second MOS capacitor. When the MOS capacitors having the voltage dependence are used, e.g.Type: GrantFiled: March 27, 2008Date of Patent: January 12, 2010Assignee: Panasonic CorporationInventors: Shinichiro Kataoka, Takehiro Yano
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Patent number: 7646247Abstract: A frequency compensated operational amplifier includes: an input stage, for receiving an input signal; an output stage, coupled to the input stage, for generating an output signal according to an output of the input stage; a first current source, for providing a first bias current; a second current source, for providing a second bias current identical to the first bias current; an Ahuja compensation circuit, comprising: a matched transistor pair, coupled to the first current source and the second current source; a capacitor coupled between the matched transistor pair and the output stage; and a transconductance boosting circuit, coupled to the matched transistor pair, for boosting transconductance of the matched transistor pair.Type: GrantFiled: June 2, 2008Date of Patent: January 12, 2010Assignee: MediaTek Singapore Pte Ltd.Inventor: Uday Dasgupta
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Patent number: 7646248Abstract: Disclosed is a Doherty amplifier including a carrier amplifier to perform a signal amplification operation regardless of a level of an input signal, a peaking amplifier to perform an amplification operation, starting from a high power output where a level of an input signal is equal to or greater than a predetermined level, an output combination circuit to combine and output the outputs of the carrier amplifier and the peaking amplifier, and an input division circuit to divide an input signal into the carrier amplifier and the peaking amplifier, the Doherty amplifier including a carrier amplifier output harmonic impedance tuning network installed at a rear end of the carrier amplifier to tune an output harmonic impedance of the carrier amplifier, and a peaking amplifier output harmonic impedance tuning network installed at a rear end of the peaking amplifier to tune an output harmonic impedance of the peaking amplifier.Type: GrantFiled: February 20, 2008Date of Patent: January 12, 2010Assignee: Sungkyunwan University Foundation for Corporate CollaborationInventors: Youngoo Yang, Xi Yao, Hyun Chul Park, Sung Wook Kwon
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Patent number: 7646249Abstract: A cross-differential amplifier is provided. The cross-differential amplifier includes an inductor connected to a direct current power source at a first terminal. A first and second switch, such as transistors, are connected to the inductor at a second terminal. A first and second amplifier are connected at their supply terminals to the first and second switch. The first and second switches are operated to commutate the inductor between the amplifiers so as to provide an amplified signal while limiting the ripple voltage on the inductor and thus limiting the maximum voltage imposed across the amplifiers and switches.Type: GrantFiled: March 10, 2008Date of Patent: January 12, 2010Assignee: California Institute of TechnologyInventors: Seyed-Ali Hajimiri, Scott D. Kee, Ichiro Aoki
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Patent number: 7646250Abstract: A signal converter includes a signal converting unit and a compensation unit. The signal converting unit generates intermediate differential signals at intermediate nodes in response to a single-ended signal. The compensation unit generates compensated differential signals at output nodes by minimizing phase and amplitude mismatch errors between the intermediate differential signals. The compensation unit includes a pair of transistors and a pair of capacitors configured in symmetry between the intermediate and output nodes. The signal converter of the present invention may be used to particular advantage in an RF receiver.Type: GrantFiled: January 14, 2008Date of Patent: January 12, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Won Mun, Il-Ku Nam, Won Ko
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Patent number: 7646251Abstract: A radio frequency (RF) application circuit is provided. In the RF application circuit, a pair of bipolar junction transistors (BJTs), instead of N-channel metal-oxide-semiconductor (NMOS) transistors, is composed of a switch-block operated in a reversion saturation region. The RF application circuit is used to serve as either an oscillator or a band pass amplifier according to the circuit characteristic of an active circuit. Thereby, not only the function of the conventional NMOS transistor served as a switch can be achieved by the switch-block, but also the element size, turned-on resistance value and turned-off parasitic capacitance value of the switch-block, and the power consumption of the RF application circuit thereof can be reduced. Thus, the resolution of the capacitance unit in a LC resonance circuit and the performance of the RF application circuit thereof can be promoted.Type: GrantFiled: February 3, 2008Date of Patent: January 12, 2010Assignee: Sunplus Technology Co., Ltd.Inventor: Jui-Pin Chen
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Patent number: 7646252Abstract: A cascade-connected transistor includes a common-source transistor which receives an input signal, and a common-gate transistor which is connected to a drain terminal of the common-source transistor and outputs an output signal. A band-pass filter receives the output signal of the cascade-connected transistors. An adjustment circuit is interposed between the drain terminal and the gate terminal of the common-gate transistor, and adjusts the output impedance of the cascade-connected transistor.Type: GrantFiled: December 21, 2007Date of Patent: January 12, 2010Assignee: Sanyo Electric Co., Ltd.Inventor: Seiichi Banba
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Patent number: 7646253Abstract: A frequency-locked clock generator includes a voltage-controlled oscillator (VCO), a frequency-to-current converter, a reference current source and a gain stage. The VCO generates an output signal. The frequency-to-current converter generates a converter current proportional to a frequency of the output signal. The reference current source generates a reference current. The gain stage generates a control signal based on a difference between the converter current and the reference current. The control signal is applied to the VCO to adjust the frequency of the output signal. Feedback forces the VCO to generate an output clock signal such that the corresponding current it produces (i.e., the converter current) is equal to the reference current. When in lock, the frequency of the output signal is determined by a time constant (or equivalent time constant) of the frequency-locked clock generator.Type: GrantFiled: May 19, 2006Date of Patent: January 12, 2010Assignee: Broadcom CorporationInventors: Tom W. Kwan, Ning Li
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Patent number: 7646254Abstract: A radiation hard design for oscillator circuits and circuits having differential outputs is described. The design includes connecting or otherwise coupling outputs of these circuits to a passive polyphase filter. The passive polyphase filter provides four quadrature outputs that are free of glitches that may have occurred at the filter input.Type: GrantFiled: August 30, 2007Date of Patent: January 12, 2010Assignee: Honeywell International Inc.Inventors: Bradley A. Kantor, Jeffrey J. Kriz
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Patent number: 7646255Abstract: A voltage controlled oscillator (VCO) assembly and module incorporating a ball grid array resonator as part of the tank circuit of the voltage controlled oscillator. The VCO module preferably incorporates at least an oscillator circuit, the tank circuit, and an output buffer stage circuit all defined by a plurality of interconnected electrical/electronic components including the ball grid array resonator which are mounted to a printed circuit board. In another embodiment, the oscillator assembly also includes a phase-locked loop circuit defined at least in part by an integrated circuit mounted to the printed circuit board.Type: GrantFiled: November 14, 2007Date of Patent: January 12, 2010Assignee: CTS CorporationInventors: Robert A. Jacobson, Elisio C. Das Neves, Glen Reeser, Thomas A. Knecht
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Patent number: 7646256Abstract: A controlled oscillation module includes a current source, an inductive load, a switching transistor section, and an adjustable parameter module. The switching transistor section is operably coupled to the current source and to the inductive load to convert a control signal into an output oscillation in accordance with an adjustable operating parameter of the controlled oscillation module. The adjustable parameter module is operably coupled to produce the adjustable operating parameter.Type: GrantFiled: August 28, 2004Date of Patent: January 12, 2010Assignee: Broadcom CorporationInventor: Shervin Moloudi
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Patent number: 7646257Abstract: A plurality of varactors are coupled via a first electrode to a shared terminal that in turn can operably couple to a source of control voltage. A second electrode for each varactor couples to a corresponding switch, where each switch couples to at least two different voltage levels. So configured, the second electrode of each varactor can be individually connected to either of two voltage levels. This can be leveraged to control, in coarse steps, the overall aggregate effective capacitance presented by these components. At least some of these varactors can have differing corresponding capacitances, the specific values of which can be selected in order to facilitate relatively equal spacing and substantially equal rates of reactance change versus the control voltage value between aggregate-capacitive reactance ranges as correspond to differing settings for the switches at various levels for the control voltage source.Type: GrantFiled: January 10, 2007Date of Patent: January 12, 2010Assignee: Motorola, Inc.Inventors: Paul H. Gailus, Joseph A. Charaska
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Patent number: 7646258Abstract: A system, method and apparatus are described for digitally synthesizing a signal for FM transmission. A complex variable frequency digital IF signal is generated for use by a digital modulator in transmission of a signal with an integrated circuit. In some examples, the integrated circuit includes various baseband processing blocks, an up-sampler, a summer, a numerically controlled oscillator (NCO) and a complex rotator, all arranged in cooperation with one another. The complex variable frequency digital IF signal can be used by a digital quadrature modulator for generation of the synthesized analog RF transmission signal, and optionally for use with an orthogonal frequency division multiplexing (OFDM) scheme.Type: GrantFiled: June 25, 2008Date of Patent: January 12, 2010Inventor: Lawrence J. Karr
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Patent number: 7646259Abstract: A toolless video balun is disclosed to include a bottom cover shell covered with a top cover shell to hold a circuit board and a BNC connector, two metal terminals bonded to the circuit board with the respective sharp-edged top metal holder portions respectively inserted into respective insertion slot in a terminal block at the top cover shell, and a pressure cap pivoted to the top cover shell for holding down electrical wires of a network line in wire grooves in the terminal block for causing the metal holder portions of the metal terminals to make contact with conductors of the electrical wires of the network line respectively.Type: GrantFiled: November 30, 2007Date of Patent: January 12, 2010Assignees: Telebox Industries Corp, Videobaluns Unlimited, LLCInventors: Ray Chang, Joel Feinberg
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Patent number: 7646260Abstract: According to one exemplary embodiment, a switching device with phase selection terminals to select between at least two phase shifting modes to reduce intermodulation distortion in the switching device includes a first phase selection terminal to select a first phase shifting mode of the switching device by enabling a first transmission line in a first phase shifting switching branch coupled to an input of the switching device. The switching device further includes a second phase selection terminal to select a second phase shifting mode of the switching device by enabling a second phase shifting switching branch coupled to the switching device input. The intermodulation distortion in the switching device is reduced by selecting one of the first and second phase shifting modes. The first transmission line is enabled by enabling a FET coupled in series with the first transmission line in the first phase shifting switching branch.Type: GrantFiled: July 13, 2007Date of Patent: January 12, 2010Assignee: Skyworks Solutions, Inc.Inventors: Dima Prikhodko, Sergey Nabokin, Oleksey Klimashov, Steven C. Sprinkle, Gene A. Tkachenko, Richard A. Carter
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Patent number: 7646261Abstract: The present invention is directed to a coupler structure that includes a first port, a second port, a third port, and a fourth port. L first transmission line layers are disposed in the structure. Each first transmission line layer includes a first transmission line conforming to a predetermined geometric configuration. The first transmission line is disposed on a first dielectric material between the first port and the second port. L is an integer. M second transmission line layers are disposed in alternating layers with the L first transmission line layers to form a total of N transmission line layers within the structure. M and N are integers and N is greater than or equal to three. Each second transmission line layer includes a second transmission line substantially conforming to the predetermined geometric configuration. The second transmission line is disposed on a second dielectric material between the third port and the fourth port.Type: GrantFiled: May 18, 2006Date of Patent: January 12, 2010Assignee: Anaren, Inc.Inventor: Niels H. Kirkeby
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Patent number: 7646262Abstract: An exemplary device that operates as a differential splitter includes a plurality of differential signal conductors. Each of the conductors is coupled to at least one other of the conductors by a connector and a resistor. The coupled conductors are impedance matched by a combination of a spacing between the connector and the resistor, an impedance of the conductors and a resistive value of the resistor. An input is associated with two of the differential signal conductors. A plurality of outputs are each associated with a respective two of the differential conductors.Type: GrantFiled: December 28, 2007Date of Patent: January 12, 2010Assignee: Alcatel-Lucent USA Inc.Inventor: George K. Kannell
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Patent number: 7646263Abstract: An antenna feed system having a single corrugated horn wave guide ports in one of the corrugations, a combiner network which receives signals at approximately 20 GHz from the four wave guide ports and provides sum and difference signals, and a transducer which provides transmit signals at approximately 30 GHz and approximately 44 GHz to a rear end of the single horn.Type: GrantFiled: May 24, 2004Date of Patent: January 12, 2010Assignee: Harris CorporationInventors: Ahmet D. Ergene, Michael Zarro
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Patent number: 7646264Abstract: An agile frequency converter provides IF-RF level exchange and notch filtering. System noise and spurious levels generated by channel frequency conversion is reduced in applications requiring broadband combining of frequency converters to form multichannel composite signal. A pair of varactor banks is connected in an arrangement whereby varactor pairs are connected in parallel and capacitor pairs are connected in anti-parallel. Tuning is achieved by circuitry for tuning first and second varactors.Type: GrantFiled: February 6, 2006Date of Patent: January 12, 2010Assignee: Broadband Innovations, Inc.Inventor: Branislav Petrovic
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Patent number: 7646265Abstract: Embodiments of the present invention provide systems, devices and methods for improving both the bandwidth of a BAW resonator bandpass filter and the suppression of out-of-band frequencies above the passband. In various embodiments of the invention, blocker inductors are located in series between the filter input and the filter output to realize both bandwidth enhancement and improved out-of-band frequency rejection. For example, a first blocker inductor may be located at the input and a second blocker inductor may be located at the output of a BAW resonator bandpass filter.Type: GrantFiled: April 11, 2007Date of Patent: January 12, 2010Assignee: Maxim Integrated Products, Inc.Inventors: Carlton Stuebing, Guillaume Bouche
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Patent number: 7646266Abstract: A Q-factor of a resonator at a high frequency is improved. An insertion loss of a filter using such a resonator and steepness of the filter are improved. A plurality of surface acoustic wave resonators including an interdigital transducer and reflecting electrodes provided on both sides thereof are connected in parallel on a piezoelectric substrate. Resonance frequencies of the surface acoustic wave resonators are rendered equal among all the resonators connected in parallel. In this way, the Q-factor of the resonance can be improved. A surface acoustic wave filter using such surface acoustic wave resonators is formed in order to improve the insertion loss and the steepness.Type: GrantFiled: April 21, 2005Date of Patent: January 12, 2010Assignee: Panasonic CorporationInventors: Tsutomu Igaki, Shun-ichi Seki, Kazuo Ikeda
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Patent number: 7646267Abstract: A segmented, electro-mechanical, remotely controlled programmable impedance tuner for the frequency range between 10 and 200 MHz uses a cascade of three continuously variable mechanical capacitors interconnected by a set of two low loss flexible or semi-rigid cables; the electrical length of the interconnecting cables between the capacitors determines the frequency at which tuning coverage of the entire area of the Smith chart is optimum; for maximum impedance coverage the length is to be chosen such as to generate a transmission phase shift of 60 degrees at the center frequency between each capacitor stage. Remote tuning is possible by changing the value of the capacitors using electrical stepper motors. The tuner is calibrated using a vector network analyzer and the data are saved in the memory of the control computer, which then allows tuning to any user defined impedance within the tuning range. Reflection factor values between 0 and higher than 0.9 can be obtained using this tuner.Type: GrantFiled: June 14, 2005Date of Patent: January 12, 2010Inventor: Christos Tsironis
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Patent number: 7646268Abstract: An electro-mechanical harmonic load pull tuner uses three variable and adjustable shunt air capacitors and three variable and adjustable series phase shifters and creates independently controllable impedances at three harmonic frequencies in the frequency range between 30 and 250 MHz. Independent harmonic tuning is possible because the combination of adjustable shunt capacitors and series phase shifters allows generating more than 1019 impedance states at each frequency covering the entire Smith chart; appropriate impedance-search Error Function-based optimization algorithms allow fast harmonic tuning for impedance tuning and matching the output of RF transistors and amplifiers at the fundamental and harmonic frequencies. Stepper motors, drivers and control software are used to automate, calibrate and use the harmonic tuner in an automated harmonic load pull measuring setup.Type: GrantFiled: December 22, 2006Date of Patent: January 12, 2010Inventor: Christos Tsironis
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Patent number: 7646269Abstract: A shunt assembly is provided for an electrical switching apparatus including a conductor assembly having a load conductor and a movable contact assembly with a number of movable contact arms. The movable contact assembly is movable in response to a fault current. The shunt assembly includes a number of flexible conductive elements each having a first end electrically connected to the load conductor, a second end electrically connected to a corresponding one of the movable contact arms, and a number of bends disposed between the first and second ends. At least one constraint element is disposed proximate a corresponding one of the bends and constrains movement of the flexible conductive element in response to the fault current, thereby translating the magnetic repulsion force associated with the fault current into a corresponding torque of the movable contact arms of the movable contact assembly.Type: GrantFiled: March 7, 2007Date of Patent: January 12, 2010Assignee: Eaton CorporationInventors: Nathan J. Weister, Paul R. Rakus, John J. Shea, William C. Pollitt
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Patent number: 7646270Abstract: A spring assembly is provided for a yoke assembly of an electrical switching apparatus including a housing, separable contacts enclosed by the housing, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes a pole shaft. The yoke assembly is coupled to the pole shaft and is movable among first and second positions corresponding to the separable contacts being closed and open, respectively. The spring assembly includes a number of first springs having a first spring rate and being coupled to the yoke assembly, and a number of second springs having a second spring rate and being coupled to the yoke assembly. The second spring rate is different than the first spring rate. The number of first springs and the number of second springs bias the yoke assembly toward the second position.Type: GrantFiled: May 4, 2007Date of Patent: January 12, 2010Assignee: Eaton CorporationInventors: Yuri Spitsberg, Robert M. Slepian, Perry R. Gibson, David A. Parks, Douglas C. Marks, Paul R. Rakus, Nathan J. Weister, Henry A. Wehrli, III
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Patent number: 7646271Abstract: A circuit breaker includes an enclosure with a first side and a second side opposite and distal from the first side. A number of separable contacts are enclosed by the enclosure. An operating mechanism is structured to open and close the separable contacts. A plurality of terminals are electrically interconnected with the number of separable contacts. The terminals protrude through the second side of the enclosure. A number of phase barrier apparatus is disposed on the second side of the enclosure. Each of the number of phase barrier apparatus includes a plurality of separate phase barrier members, each of which is disposed about a corresponding one of the terminals, and a number of interlocking members. Each of the number of interlocking members interlocks with an adjacent pair of the separate phase barrier members.Type: GrantFiled: March 27, 2007Date of Patent: January 12, 2010Assignee: Eaton CorporationInventors: Andrew L. Gottschalk, Frankie K. Ostrowski, Kelly J. McCarthy, Paul R. Rakus
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Patent number: 7646272Abstract: A freely oriented portable superconducting magnet is disclosed. Coolant is supplied to the superconducting magnet from a repository separate from the magnet, enabling portability of the magnet. A plurality of support assemblies structurally anchor and thermally isolate the magnet within a thermal shield. A plurality of support assemblies structurally anchor and thermally isolate the thermal shield within a vacuum vessel. The support assemblies restrain movement of the magnet resulting from energizing and cooldown, as well as from changes in orientation, enabling the magnet to be freely orientable.Type: GrantFiled: October 12, 2007Date of Patent: January 12, 2010Assignee: The United States of America as represented by the United States Department of EnergyInventors: Eric N. Schmierer, F. Coyne Prenger, Dallas D. Hill
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Patent number: 7646273Abstract: A solenoid actuator assembled from a minimum number of parts. The solenoid actuator includes a coil bobbin carrying an excitation coil, a core extending through the coil bobbin, and an armature having an actuator leg and an angled anchor leg. The core has a first pole end and a second pole end respectively at its opposite ends. A hinge support is provided to pivotally support the armature to the core, and is formed as an integral part of the coil bobbin and is disposed at one axial end of the core to place the anchor leg in close relation to the first pole end, and at the same time to place a portion of the actuator leg in close relation to the second pole end. The hinge support is configured to make the anchor leg in direct supporting contact with the first pole end.Type: GrantFiled: September 20, 2007Date of Patent: January 12, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventor: Noboru Kobayashi
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Patent number: 7646274Abstract: A comparatively light and compact permanent magnet arrangement for an MRI apparatus has a pair of opposed permanent magnet arrays with a shimming system to adjust the uniformity and strength of a magnetic field in a central chamber of the apparatus. The MRI apparatus is used to examine the extremities of a patient to determine cardiovascular characteristics from an analysis of the blood flow through selected arteries in the extremity. The information collected can be used to calculate such characteristics as total cardiac output, blood flow, arterial wall thickness and elasticity and the presence of plaque.Type: GrantFiled: April 30, 2004Date of Patent: January 12, 2010Inventor: Uri Rapoport
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Patent number: 7646275Abstract: The invention is a device and method for eliminating core excitation losses in a distribution transformer when the transformer is not supplying power to loads. The invention consists of sensors, a control circuit, a user interface and a power contactor. The power contactor is connected on the line side of a transformer and is opened or closed automatically based on preprogrammed time or load criteria determined by the control circuit. In one operational mode and when the transformer is disconnected from the line, the control board generates low power pulses at the transformer load connection points in order to “search” for loads. If a load is detected, the transformer is reconnected by way of contactor closure. If the transformer load drops to zero, for a predetermined amount of time, the transformer is again disconnected and the pulsed load search is reestablished.Type: GrantFiled: June 6, 2003Date of Patent: January 12, 2010Assignee: Xantrex Technology, Inc.Inventor: Rick West
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Patent number: 7646276Abstract: The transformer has a bobbin, a coil assembly and a magnetic core assembly. The bobbin is mounted in the magnetic core assembly and has multiple connecting pins being formed on at least one side of a bottom surface of the bobbin. Each connecting pin has a top surface as a soldering surface that corresponds to a solder pad on a back of a circuit board. At least one fastener is further formed on the bottom surface of the circuit board. Therefore, when the transformer is mounted through the circuit board, the connecting pins are soldered on the back of the circuit board to reduce the total thickness of the combination of the transformer and the circuit board.Type: GrantFiled: May 7, 2008Date of Patent: January 12, 2010Assignee: Acbel Polytech Inc.Inventors: Chao-Yuan Yang, Shun-Te Chang, Chang-Ching Yeh, Jui-Chia Chen
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Patent number: 7646277Abstract: An ignition coil includes a coil part having primary and secondary coils, a center core, and a peripheral core, a connector case part, a seal rubber, and a ventilation passage. The coil part is inserted in a plug hole of an engine, and the case part is outside the plug hole. An axial end of the peripheral core is inserted in an insertion hole of the case part. The peripheral core and an inner wall surface of the insertion hole define a ventilation clearance therebetween. A gap between the case part and the plug hole is sealed with the rubber. The rubber is closely-attached to the plug hole and the case part along its whole circumference. The passage, through which the plug hole is ventilated, includes the clearance and a ventilation hole formed at a certain position of the case part away from the rubber to communicate with the clearance.Type: GrantFiled: May 19, 2008Date of Patent: January 12, 2010Assignee: Denso CorporationInventors: Kouji Tsunenaga, Kiyotoshi Nakamoto
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Patent number: 7646278Abstract: The present invention relates to a high voltage transformer with high magnetic leakage and dual high voltage output, comprising a base and a core set, wherein the base contains a hollow support into which a first core of the core set pierces, and primary coils are wound on both sides of the hollow support, while a plurality of isolation channels is installed for winding first and second secondary coils on external sides of primary coils. First and second slots are opened between the primary coils and the first and second secondary coils respectively, and both slots cut into an internal through hole. When a second core of the core set is placed at one end of the hollow support, extensions at both ends of the second core go through both sides of the first core, together with first and second protrusive parts between the two extensions that are installed within the first and second slots and combined with the first core to form multiple magnetic paths.Type: GrantFiled: August 28, 2008Date of Patent: January 12, 2010Assignee: Taipei Multipower Electronics Co., Ltd.Inventors: Ching-Sheng Yang, Su-Hua Wu, Shu-Chen Wang
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Patent number: 7646279Abstract: Apparatus for supplying energy to a load, comprises a power supply unit (102) e.g. a switched mode electronic transformer or electronic ballast having an input for receiving current at mains frequency and a means for stepping-up said mains frequency to a higher frequency e.g. 30-50 kHz and an output for delivering energy at the higher frequency. A two part connector (108) has a first core portion (106) that has a primary winding (104) connected to the output of the power supply unit and a mating second core portion (112) that has a secondary winding (110) for delivery of energy to a load (114), the core portions being of a high resistivity material, e.g. a ferrite having a resistivity of at least 104 ?cm. The apparatus may be used to power e.g. low voltage halogen or other incandescent lighting, fluorescent lighting, or an electric motor, a power supply for a computer, radio, television or like electronic device, a heater or the like.Type: GrantFiled: May 4, 2004Date of Patent: January 12, 2010Inventors: George A. Limpkin, Simon G. Rozenberg
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Patent number: 7646280Abstract: A common mode choke coil includes two extraction conductors formed on a resin insulating layer, and a concave portion is formed in the resin insulating layer in an area between a first portion covered with one of the extraction conductors and a second portion covered with the other extraction conductor. An upper resin insulating layer is embedded inside the concave portion. Accordingly, because the resin insulating layer is not flat in the portion where the extraction conductors are formed, a distance between the extraction conductors along the surface of the resin insulating layer increases. Therefore, a current path generated due to ion migration along the surface of the insulating layer is hardly formed, thereby enabling to obtain high withstand voltage, even if the distance between the extraction conductors is short.Type: GrantFiled: August 22, 2008Date of Patent: January 12, 2010Assignee: TDK CorporationInventors: Tomokazu Ito, Tomonaga Nishikawa
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Patent number: 7646281Abstract: An apparatus for an electric arc welder comprising a first electromagnetic device including a first core assembly, wherein the first core assembly has a first stack of laminations which are press-fitted or snapped together into interlocking engagement with a complementary second stack of laminations so as to form two flux paths through the first core assembly, each of which passes through a center portion of the first core assembly; a second electromagnetic device, such as a transformer, including a second core assembly, wherein the second core assembly has a first stack of laminations which are press-fitted or snapped together into interlocking engagement with a complementary second stack of laminations so as to form two flux paths through the second core assembly, each of which passes through a center portion of the second core assembly; and wherein the two core assemblies of the electromagnetic devices are press-fitted or snapped together into interlocking engagement with each other.Type: GrantFiled: January 14, 2005Date of Patent: January 12, 2010Assignee: Lincoln Global, Inc.Inventors: Craig L. Diekmann, Lawrence A. Boehnlein, Larry B. Solski, Dale L. Bilczo
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Patent number: 7646282Abstract: An insulator for a cutout switch and fuse assembly used in connection with an electrical power grid, including a body including a first end and a second end, a guide connector, a conductor strip, and a tool structure is located, a pivot connector is located at the second end of the body, and a mounting connector is located on the body between the first end and the second end. In an alternative embodiment, universal connectors are located at the first end and the second end. The body is manufactured by a filament winding process.Type: GrantFiled: December 14, 2007Date of Patent: January 12, 2010Inventor: Jiri Pazdirek
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Patent number: 7646283Abstract: A wireless activation system, such as a keyless car entry system, uses repeated code sequences for communication between a transmitter device and a receiver device. By varying the sequence duration in a synchronism at the transmitter device and receiver device, either by varying the number of symbols or chips in the sequence, or by varying the symbol or chip rate, it is made more difficult for an unauthorised party to detect the code sequences and relay the code sequences to achieve unauthorised activation at the receive device.Type: GrantFiled: November 19, 2003Date of Patent: January 12, 2010Assignee: Koninklijke Philips Electronics N.V.Inventor: Martin S. Wilcox
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Patent number: 7646284Abstract: Print media (28) having a plurality of radio frequency data storage devices (88) passes through a print media pathway (110) of a printer assembly (14). The devices (88) can be programmed using groups (142, 144) of antennas which are arranged about the print media pathway (110) such the simultaneous programming of multiple devices (88) can be achieved. A data programming device (94) consisting of multiple reader/programmers (94a, 94b, 94c) can be utilized in combination with one or more RF multiplexers (152, 154) to reduce the time necessary to program the devices (88) separately.Type: GrantFiled: November 17, 2004Date of Patent: January 12, 2010Assignee: Lexmark International, Inc.Inventors: Raymond Michael Marowski, Mark Stephen Underwood
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Patent number: 7646285Abstract: A security system in a vehicle extends its protection to installed equipment of the vehicle, such as audio components and navigation systems. The installed equipment is armed and disarmed by the security system remote control, preventing the equipment from normal functioning after unauthorized removal. The security system further enables programming, monitoring, and diagnosing of the installed equipment through the security system remote control.Type: GrantFiled: September 8, 2006Date of Patent: January 12, 2010Assignee: DEI Headquarters, Inc.Inventors: Franklin Ochs, Mark Rutledge
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Patent number: 7646286Abstract: An apparatus for supporting recovery of the vehicle if the vehicle is stolen includes a determining unit that determines whether the vehicle is being stolen. A camera judges a state of the vehicle and an environment around the vehicle. When the determining unit determines that the vehicle is being stolen, a horn of the vehicle is automatically honked.Type: GrantFiled: March 21, 2006Date of Patent: January 12, 2010Assignees: Fujitsu Ten Limited, Toyota Jidosha Kabushiki KaishaInventors: Satoshi Harumoto, Junichi Sawada, Yoshihiko Maeno, Hironori Nomori, Yuusaku Matsuda, Motohiro Nakamura
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Patent number: 7646287Abstract: An antitheft apparatus for a vehicle has an inertia sensor, which is also used for an anti-lock braking system. An electronic control unit receives output signals from the inertia sensor and determines a possible vehicle theft when a detected vehicle condition (for example, vehicle acceleration) is larger than a threshold value.Type: GrantFiled: October 24, 2006Date of Patent: January 12, 2010Assignee: DENSO CORPORATIONInventors: Michitaka Hayashi, Masamoto Kawaguchi, Kenji Hirano
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Patent number: 7646288Abstract: The present invention is a warning system for alerting a driver and others to ensure an examination is made of a school or day care bus or van is thoroughly examined for remaining occupants following a transportation run.Type: GrantFiled: October 30, 2007Date of Patent: January 12, 2010Inventor: Alex T. Wiley
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Patent number: 7646289Abstract: A fuel economy (FE) indicator lamp regulation system for a hybrid electric vehicle having an internal combustion engine includes an FE indicator lamp, a first module that calculates an instantaneous FE of the hybrid electric vehicle and a second module that determines a velocity of the hybrid electric vehicle. A third module switches the FE indicator lamp between an on state and an off state based on the instantaneous FE and the vehicle speed.Type: GrantFiled: January 24, 2007Date of Patent: January 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Goro Tamai, Mark A. Zerbini, Alan J. Houtman
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Patent number: 7646290Abstract: A deceleration warning device for reducing rear-end collisions in road traffic includes a sensor for detecting a longitudinal acceleration value, a control device receiving the longitudinal acceleration value, determining an acceleration limit value, and generating a warning signal if the longitudinal acceleration value exceeds the acceleration limit value, and a rear lighting display for displaying an alarm state when the control device emits a warning signal. Determination of the acceleration limit value is based upon a plurality of signals including an anti-lock braking system (ABS) signal and a brake pedal position signal. The control device is operable in one of three levels depending upon a detected quality of the signals.Type: GrantFiled: February 9, 2007Date of Patent: January 12, 2010Assignee: Ford Global Technologies, LLCInventors: Torsten Wey, Mike Mould, Amin Kashi, Jens Dornhege
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Patent number: 7646291Abstract: A light control system may include a signal coder (e.g., a flasher module), one or more motor vehicle light sources, and a signal decoder. The light control system may be a part of a motor vehicle taillight system. The signal coder may provide a selected signal. The selected signal may be a voltage signal having a modified portion when the signal coder is activated by a turn signal switch. The selected signal may be a substantially non-modified voltage signal when the signal coder is activated by a brake signal switch. The signal decoder may be coupled to the signal coder. The signal decoder may assess the selected signal from the signal coder to determine a selected lighting output of the motor vehicle light sources. The motor vehicle light sources may be coupled to the signal decoder. The motor vehicle light sources may provide the selected lighting output.Type: GrantFiled: November 15, 2004Date of Patent: January 12, 2010Assignee: SafeCode, Inc.Inventor: Richard C. Counts
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Patent number: 7646292Abstract: A device for tracking an item or a box may include a conductive mesh configured to at least partially cover the item or the box, and a wireless tag coupled to the conductive mesh. The wireless tag may be configured to report a breaching of the conductive mesh or an opening of the box by issuing a first predetermined RF signal. The wireless tag may include a GPS device and the first predetermined signal may include GPS-derived geographical information.Type: GrantFiled: May 25, 2006Date of Patent: January 12, 2010Assignee: Oracle International CorporationInventor: Richard C. Johnson
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Patent number: 7646293Abstract: An exemplary system for testing a buzzer (110) associated with a computer (100) includes a buzzing module (122) for controlling the buzzer to sound continuously according to a reference frequency value and a reference amplitude value; a recording module (124) for storing the buzzer sound recorded by an audio receiving device as a recorded audio data file into the computer; an analyzing module (126) for analyzing the recorded audio data file to obtain a real frequency value and a real amplitude value of the buzzer sound; and a determining module (128) for comparing the real frequency value and the real amplitude value with their reference values to determine whether the buzzer is in good working condition. A related method is also provided.Type: GrantFiled: June 5, 2006Date of Patent: January 12, 2010Assignees: Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Zhao-Bin Zhang, De-Hua Dang