Patents Examined by Michael Sherry
  • Patent number: 7342758
    Abstract: A method and a system for detecting stand-alone operation of a distributed generating system having a generating source connected in shunt with an independent power distribution system via a first branch breaker are proposed. A voltage or a frequency signal on the independent power distribution system is read. The wavelet transformation is performed on the voltage or frequency signal to form a time versus high-frequency component window and a time versus low-frequency component window for conveniently detecting the perturbation in the time domain of the signal. Next, whether the absolute value of the high-frequency component is greater than a threshold value and whether the duration is longer than another threshold value are determined. If both answers are yes, a stand-alone operation occurs. An alarm signal is immediately generated and sent to the first branch breaker to release the connection between the generating source and the power distribution system.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: March 11, 2008
    Assignee: Industrial Technology Research Institute
    Inventors: Yung-Hsiang Liu, Tain-Syh Luor, Shyh-Jier Huang, Jeu-Min Lin
  • Patent number: 7342329
    Abstract: The invention relates to a power supply for electrical domestic appliances, comprising: at least one connection to the mains electricity supply, and at least one connector for releasable electrical coupling of the power supply to a domestic appliance, wherein the power supply is also provided with measuring and control means for controlling a feed signal generated by the power supply by means of at least one control signal transmitted by a coupled domestic appliance. The invention also relates to a domestic appliance for co-action with such a power supply.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 11, 2008
    Assignee: Ferro Techniek B.V.
    Inventor: Simon Kaastra
  • Patent number: 7342765
    Abstract: An electrical insulating device for a linear component forming part of a fuel system subjected to risks of possible external electrical discharges formed by a part (13) made of insulating material attached to two metal flanges (15, 17) that allow inserting the device (11) between two parts of said linear component, said part (13) being formed by a cylindrical body (21) with a castellated crown (23) on its outer side, formed by longitudinal (25) and transverse (27) segments, and said metal flanges (15, 17) having transverse projections (31, 33) facing the transverse segments (27) of the castellated crown (23) for facilitating their attachment by suitable means (39).
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: March 11, 2008
    Assignee: Airbus Espana, S.L.
    Inventors: Eduardo Orgaz Villegas, Jorge Nogal Martin
  • Patent number: 7342761
    Abstract: The application of electric power from a power source to a load is controlled by detecting the magnitude of electric current flowing to the load and producing a first signal level that is indicative of that magnitude. The first signal level is compared to a reference signal level which comparison produces an output signal. Either the first signal level or the reference signal level is altered in response to variation of voltage applied to the load. This results in the output signal indicating when electric power consumed by the load exceeds a threshold level. The flow of electric current from the power source to the load then is controlled in response to the output signal.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: March 11, 2008
    Assignee: Rockwell Automation Technologies, Inc.
    Inventor: Jack L. Covault
  • Patent number: 7342764
    Abstract: An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collected in both two and three wire installations. Both zero cross detectors are monitored and are used to automatically configure the electronic control. Over voltage circuitry senses an over voltage condition across a MOSFET which is in the off state and turns the MOSFET on so that it desirably will not reach the avalanche region. Over current circuitry senses when the current through the MOSFETs has exceeded a predetermined current threshold and then turns the MOSFETs off so they do not exceed the MOSFETs' safe operating area (SOA) curve. Latching circuitry is employed to keep the protection circuitry in effect even after a fault condition has cleared.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: March 11, 2008
    Assignee: Lutron Electronics Co., Inc.
    Inventor: Richard L. Black
  • Patent number: 7342754
    Abstract: A device is provided for preventing arcing between contacts of a switching device as the contacts of the switching device are opened. The device includes a coil suppression circuit connected in parallel with the coil. The coil suppression circuit dissipates the energy stored in the coil in response to the de-energization of the coil. A first solid state switch has a gate operatively connected to the coil suppression circuit and is connected in parallel with the contacts. The first solid state switch is movable between an open position preventing the flow of current therethrough and a closed position in response to the dissipation of energy by the coil suppression circuit.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 11, 2008
    Assignee: Eaton Corporation
    Inventors: Robin Fitzgerald, legal representative, Sean Tillman Sande, Murray Robert Ellsworth, Edward Aloysius Fitzgerald
  • Patent number: 7339772
    Abstract: Embodiments of the present invention provide methods and circuitry for protecting a circuit during hot-swap events. Hot swap protection circuitry includes as overcurrent detection circuit which decouples power from a load. Circuitry is provided to detect ground-fault conditions. Noise detection circuitry is provided to reduce noise in the power that is delivered to the load.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: March 4, 2008
    Assignee: Ixys Corporation
    Inventor: Sam Seii Ochi
  • Patent number: 7339773
    Abstract: A method for driving a semiconductor switch with load current limiting and thermal protection whose maximum load current is limited and which switches off when a predetermined upper temperature is exceeded and switches on again when a predetermined lower temperature is crossed. The semiconductor switch is operated in a normal mode and a fault mode. The semiconductor switch is driven in the fault mode once the predetermined temperature is exceeded; and the load current is limited to a first maximum value in a normal mode and a second maximum value, which is lower than the first maximum value, in a fault mode. Such a circuit configuration with a semiconductor switch has a protection circuit and a sensor circuit.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: March 4, 2008
    Assignee: Infineon Technologies AG
    Inventor: Zenko Gergintschew
  • Patent number: 7339778
    Abstract: A corona discharge static neutralizing device includes a wire electrode retained in tension between spaced ends of a resilient support member that is positioned within a flowing air stream. Another electrode aligned with and spaced from the wire electrode promotes a flowing ion stream, when connected to receive an ionizing difference of potential, that flows in skew orientation relative to the flowing air stream. Multiple wire electrodes are supported in tension on a resilient support member along with another electrode disposed on the support member intermediate the wire electrodes and in substantially the same plane therewith.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: March 4, 2008
    Assignee: Ion Systems
    Inventors: Peter Gefter, Scott Gehlke, Lawrence B. Levit, Dennis A. Leri
  • Patent number: 7339779
    Abstract: A piezoelectric anion generator controlled by an integrated circuit IC, which includes an oscillation circuit, a frequency following-up circuit, an power amplification circuit, a step-up circuit, a voltage-doubling circuit, an ion discharging pin, a negative feedback voltage-stabilizing circuit and a bleeder circuit. Due to using the integrated circuit IC controlling circuit, it can provide the AC exciting voltage at the certain frequency to the piezoelectric ceramic transformer and has the functions of regulating the exciting voltage and the frequency following up. The piezoelectric ceramic transformer is used as the main AC step-up element to realize the AC high voltage output. After the voltage-doubling commutation the DC high voltage can be obtained, and the anion-discharging pin connected to it generates the high voltage electrical field, and then the gas is ionized to give out a lot of anions.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: March 4, 2008
    Assignee: Xi'an Kong Hong New Materials Sci-tech Co., Ltd.
    Inventors: Yaoqiang Chen, Zhe Yang, Peng Quan, Zhijun Hou
  • Patent number: 7339775
    Abstract: An overcurrent protection circuit and DC power supply that are subtly affected by process and device differences, have small input and output voltage drops, and set maximum and short-circuit current values. In a normal operation mode, a first operational amplifier and an output transistor keep the output voltage constant. In a current limiting mode, when a large current is input to an input terminal due to transient response, a second detection transistor and a third operational amplifier control a second control transistor to keep the maximum current of the output transistor constant. When voltage decreases during a foldback mode, a first detection transistor and a second operational amplifier control a first control transistor to control short-circuit current of the output transistor. A second operational amplifier decreases output current in accordance with the output voltage with a current source that maintains constant mutual conductance.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: March 4, 2008
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Hiroyuki Kimura
  • Patent number: 7339770
    Abstract: An electrostatic discharge protection circuit is provided having a first electrically conductive element (such as a current sinking transistor) to couple between a power source and a first node. The first electrically conductive element has a control input terminal. A discharge path control circuit having an output terminal couples to the control input terminal of the first electrically conductive element. A timer circuit having an output terminal couples to the input terminal of the discharge path control circuit. A ring oscillator timer circuit having an output terminal couples to an input terminal of the timer circuit. The ring oscillator timer circuit may include a series of inverter circuits and/or counter circuits (such as flip-flop circuits).
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: March 4, 2008
    Assignee: Intel Corporation
    Inventors: Timothy J. Maloney, Steven S. Poon
  • Patent number: 7339774
    Abstract: A safety battery disconnect system for disconnecting a vehicle battery from the electrical system of the vehicle when an impact exceeding a predetermined magnitude is detected while maintaining electrical power input from the battery to selected portions of the vehicle electrical system. The system includes a shock sensor connected to a latching switch interposed between the battery and the vehicle fused electrical input system and is preferably a unitary unit mounted on or in close proximity to the battery.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: March 4, 2008
    Inventors: Peter M. Zdziech, John Richard Walls, III
  • Patent number: 7339777
    Abstract: A system is provided for dissipating electrical charges that build on a rotatable shaft extending from an electrically-grounded motor housing or rotating shafts conductively linked to components that create and electrical charge, such as wind turbine blades, power generator turbines, and the like. The system includes a frame defining a central opening wherein the rotatable shaft is positioned with the central opening, a first grounding fiber secured within the frame, and a fiber clamp positioned with the frame. The fiber clamp acts to urge the first grounding fiber toward the central opening. The system may also include a mounting bracket having a frame mounting channel, wherein a portion of the frame is securely retained within the frame mounting channel, and an installation guide positioned on the mounting bracket. The installation guide may be configured to properly align the frame and the first grounding fiber relative to the rotatable motor shaft.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: March 4, 2008
    Assignee: Illinois Tool Works Inc
    Inventors: Michael P. Barnard, Adam H. Willwerth, Jeffrey W. Richardson
  • Patent number: 7339288
    Abstract: The invention relates to a hybrid electrical switching device, comprising an electromechanical relay including a mechanical switching element to be operated by an electrical coil, and a main semiconductor switching element including a control input and a current conduction path which is connected in parallel with the mechanical switching element for energizing an electric load. The main semiconductor switching element is of the type that ceases to conduct when a current through the current conduction path thereof drops below a threshold value. The circuit furthermore comprises an auxiliary semiconductor switching element including a control input and a current conduction path which is connected for controlling the main semiconductor switching element.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: March 4, 2008
    Assignee: Eaton Electric N.V.
    Inventor: Petrus Johannes Plechelmus Schasfoort
  • Patent number: 7336462
    Abstract: An method and apparatus testing an alternator and/or starter assembly including a power source for energizing the alternator and/or starter, a computer processor for monitoring electrical current supplied to energize the alternator and/or starter wherein the computer processor also monitors electrical voltage across the alternator. The invention also includes a first switch coupled to the computer processor which is enabled if excess current is required to energize the alternator; a second switch coupled to the computer processor which is enabled to place a heavy load on an output of the alternator if the voltage exceeds a maximum limit; a third switch coupled to the computer processor which is enabled if the current supplied to energize the starter exceeds a maximum limit.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: February 26, 2008
    Assignee: SPX Corporation
    Inventors: Kurt Raichle, Weixing Xia, Scott Krampitz
  • Patent number: 7336473
    Abstract: A single-path electrical device generates a conductive channel through the air to alternatively convey charge to a target and remove charge from the target. The single-path electrical device uses either a grounding sphere or grounding torroid to store and at least partially dissipate opposite charge. In this way, neither the target nor the single-path electrical device is required to be grounded. The single-path electrical device may operate at a low frequency to help overcome any surface effects of the target.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: February 26, 2008
    Assignee: Raytheon Company
    Inventor: Robert R. Gross
  • Patent number: 7336471
    Abstract: A charge eliminating mechanism of the invention includes a mechanical switching mechanism (e.g., a POGO pin), and a wiring line so connected as to be able to be electrically connected to the POGO pin. The wiring line can include a resistor. A block holds the POGO pin. The POGO pin comes into contact with a charge eliminating plate provided on a stage, so that the static electricity of the stage is discharged to ground.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: February 26, 2008
    Assignee: Tokyo Electron Limited
    Inventors: Nobuhito Suehira, Yoshimune Misawa
  • Patent number: 7336464
    Abstract: A power limiting circuit is disclosed. The power limiting circuit includes a temperature sensing circuit that outputs a temperature signal that is proportional to temperature over a temperature range. The power limiting circuit also includes a regulation circuit coupled to the temperature sensing circuit and controlled by the temperature signal. The regulation circuit operates in a manner that is proportional to the temperature.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: February 26, 2008
    Assignee: National Semiconductor Corporation
    Inventors: Vladislav Potanin, Elena Potanina
  • Patent number: 7336001
    Abstract: A door lock control device prevents deterioration in anti-theft property of a vehicle by restricting unjust cancellation of a locked state of a door of the vehicle. In-vehicle operation detecting means detects a predetermined operation performed in a compartment of the vehicle. Locked state canceling means cancels the locked state of the door when the predetermined operation is detected by the in-vehicle operation detecting means. Unjust act detecting means detects an unjust act applied to the vehicle. Locked state cancellation prohibiting means prohibits cancellation of the locked state by the locked state canceling means after the unjust act is detected by the unjust act detecting means.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: February 26, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takao Ozawa, Kouichi Masamura, Yoshihide Nakane