Patents Examined by Michael Sherry
  • Patent number: 7336457
    Abstract: Disclosed is an end-of-life status alarm indication circuit and method for indicating the failure of the primary contacts of a ground fault circuit interruption (GFCI) device to open when a ground fault circuit is detected by the GFCI device. The GFCI device will protect against the situation where the primary contacts of a GFCI device become welded together and will not open when a ground fault circuit is detected by the device. The alarm indication may be either an audible or visual indication.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: February 26, 2008
    Assignee: Hubbell Incorporated
    Inventor: Stephen M. Liscinsky, III
  • Patent number: 7336460
    Abstract: A circuit of protection against electrostatic discharges, comprising a first MOS transistor for detecting a leakage current between a first input node of a circuit to be protected and a second node at an output voltage, a second MOS transistor constitute of a switch directly connecting said nodes, and a leakage current amplifier in the first transistor to control the second one.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: February 26, 2008
    Assignee: STMicroelectronics SA
    Inventors: Stéphanie Dournelle, Pascal Salome
  • Patent number: 7336456
    Abstract: An objective is to detect a resolver malfunction without fail, using a low-cost resolver having the small number of the poles, and a control-motor system having advantage in small sizing and high-power outputting. In the control-motor system, the system for driving a 2m-pole motor based on a rotor rotation angle ? detected by a 2n-pole resolver, where m and n being counting numbers, is characterized in that: the sum of the square of a signal modulated by sin ? and the square of a signal modulated by cos ? in the resolver in which an excitation signal generated in said system is modulated by sin ? and cos ? in response to the rotor rotation angle ? of the resolver is compared to a predetermined malfunction threshold value, so that malfunction determination related to the resolver is performed, and also, given that the sum is a2 when the resolver is recognized to be in normal operation, the malfunction determination threshold value is made to be not smaller than {a×cos((?/2)/(m/n))}2.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: February 26, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaki Matsushita, Takayuki Kifuku, Hideki Doi, Katsuhiko Ohmae
  • Patent number: 7336461
    Abstract: A method for determining the reclose time of a circuit breaker on a three-phase high-voltage electric network after separation of contacts 7A, 8A, 7B, 8B, 7C, 8C in the presence of a fault on one of the three phases A, B or C includes measuring voltages ULA0, ULBO and ULCO, measuring voltage USAO,determining the voltage USA0, USB0, and USCO, calculating the differences ULAB, ULAC and ULBC, calculating the differences USAB, USAC, and USBC. From these measurements and calculations, a determination of the reclose time is made on the basis of the voltage differences.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: February 26, 2008
    Assignee: Areva T&D SA
    Inventors: Jean-Pierre Dupraz, Houria Siguerdidjane, Farah Boudaoud, Patrick Bastard
  • Patent number: 7336470
    Abstract: A solenoid (30) has one end connected to the ground G and the other end connected to an N-MOS transistor (33) which applies current from a battery (31) to the solenoid (30). On the other hand, regenerative current generated when the N-MOS transistor turns off flows from a diode (34) whose anode is connected to the ground, via a resistor (32) to the solenoid (30). Accordingly, without connecting the anode of the diode (34) to the solenoid (30) using a lead line, the solenoid (30) can be driven by current. Moreover, since the current flowing from the battery (31) to the solenoid (30) does not flow to the resistor (32), heating is reduced and a solenoid drive apparatus can be made in an IC.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: February 26, 2008
    Assignee: Sanken Electric Co., Ltd.
    Inventor: Kiyokatsu Satoh
  • Patent number: 7336002
    Abstract: A main power source is, for example, an ordinary Pb battery. At the time of starting an engine, the main power source supplies power to a starter. The main power source is given a higher priority than an auxiliary power source to supply power to ordinary loads. The auxiliary power source is a high performance battery (e.g., Li ion battery), which has superior charge acceptance capability and better state detectability over the main power source. The auxiliary power source stores regenerative power, which is generated by a generator at the time of deceleration of a vehicle, and is used as a redundant power source for the main power source. The main power source and the auxiliary power source are connected to each other through a supply circuit, which has a DC/DC converter, and a second supply circuit, which has a switch.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: February 26, 2008
    Assignee: Denso Corporation
    Inventors: Akira Kato, Katsunori Tanaka, Masaru Kamiya, Takashi Senda
  • Patent number: 7333312
    Abstract: An ESD device invention comprises first and second transistors formed in a substrate, each having a source, a drain and a gate, the source and drain of the first transaction being connected between ground and an I/O pin or input, the gate of the first transistor being connected to ground and the source and drain of the second transistor being connected between the substrate of the first transistor and the I/O pin or input; first and second capacitors connected in series between ground and the I/O pin or input; and at least a third transistor connected between ground and a node between the first and second capacitors to which the gate of the second transistor is also connected.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: February 19, 2008
    Assignee: Altera Corporation
    Inventors: Hugh Sungki O, Chih-Ching Shih, Cheng-Hsiung Huang, Yow-Juang Bill Liu
  • Patent number: 7332831
    Abstract: A power supply apparatus includes a plurality of power supply circuits, switches connected to the power supply circuits, a common soft start circuit and an individual soft start circuit commonly connected to the plurality of power supply circuits via the switches. The power supply circuits are commonly connected to the common soft start circuit at power-on or power-off so as to perform common soft start by the common soft start circuit. When a voltage from any of the plurality of power supply circuits is caused to make a transition individually, the associated power supply circuit is connected to the individual soft start circuit so as to perform soft start by the individual soft start circuit.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: February 19, 2008
    Assignee: Rohm Co., Ltd.
    Inventor: Yasuhiro Miyagoe
  • Patent number: 7333314
    Abstract: A power control unit that can perform preventing a secondary battery from generating heat and preventing power supply from being suddenly shut off. Supply of power from a secondary battery to a system unit is controlled by a power control unit. At this time, the power control unit successively monitors a cell temperature of the secondary battery, and requests the system unit to switch to a power saving mode when the cell temperature exceeds a predetermined alarming temperature which is preset.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: February 19, 2008
    Assignee: Sony Corporation
    Inventors: Hidenori Yamaji, Soichi Sato, Yoshitaka Narukawa
  • Patent number: 7333311
    Abstract: A structure and method operable to provide ESD protection for protected circuitry of automatic test equipment (ATE). In a disable mode, the first voltage potential and second voltage potential are substantially equivalent to the reference potential resulting in a clamping circuit providing a nominal clamping voltage to the protected circuit so that an ESD event having a voltage between the first voltage potential and the second voltage potential is shunted to the reference potential via first and second ESD rails, wherein the ESD event is received on a DUT node coupled to the one or more signal rails of the protected circuitry.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: February 19, 2008
    Assignee: Agilent Technologies, Inc.
    Inventors: John C. Kerley, David D. Eskeldson
  • Patent number: 7333315
    Abstract: A secondary battery device 1 including multiple protective circuits U1-U3 connected in parallel and each having two fuses fa, fb connected in series, wherein a terminal tc of each heater h is connected to a switch element 4 via rectifier element D1-D3. Even if a potential difference is generated between terminals tc, no residual current flows because any one of the rectifier elements D1-D3 is reverse-biased.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: February 19, 2008
    Assignees: Sony Chemical & Information Device Corporation, Sony Corporation
    Inventors: Masami Kawazu, Hisaya Tamura, Yuji Furuuchi, Masahiro Matsuyoshi, Kazutaka Furuta
  • Patent number: 7332829
    Abstract: In a condition monitor system for controlling a power supply in a vehicle, a charge/discharge circuit has a capacitor which is discharged in response to each of speed pulses of a speed sensor and periodic pulses of a microcomputer. When none of the pulses are generated due to abnormality, the capacitor is continuously charged without being discharged. When the charge voltage of the capacitor reaches a switching voltage, a relay is turned off to shut off the power supply to various parts in the vehicle. The charge/discharge circuit is commonly used to check generation of the speed pulses and the periodic pulses by setting the switching voltage in accordance with a possible maximum time interval of the speed pulses.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: February 19, 2008
    Inventors: Nobutomo Takagi, Makoto Kawatsu, Yasuhiro Tanaka
  • Patent number: 7333317
    Abstract: A portable ionizer is arranged for generating ionized air in an area of a user's fingers. The portable ionizer includes a battery-powered oscillator coupled via a high voltage conversion circuit to a positive electrode and a negative electrode for generating positive and negative ions. A fan positioned near the positive and negative electrodes is arranged providing a positive and negative ion flow path to the area of the user's fingers.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: February 19, 2008
    Assignee: International Business Machines Corporation
    Inventors: Susan Ann Hodapp Benysh, Edward Charles Gillard, Don Alan Gilliland, Dennis Elmer Maloney
  • Patent number: 7333308
    Abstract: A control arrangement is operable to control an electrical relay to supply current. The arrangement comprises current supply means and control means operable to provide a relay make signal and a relay break signal to control the state of the relay to respectively make and break a connection to the current supply means. Further control means are operable to enable or disable the current supply means. A first delay means operates to delay enabling the current supply means until after a relay make signal has been provided, to allow the relay to make the connection before current supply commences. Excess current is also sensed and controlled by a form of pulse-width modulation.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: February 19, 2008
    Inventor: Bruce Stanley Gunton
  • Patent number: 7332832
    Abstract: Circuitry in a hard disk drive (HDD) senses the supply voltage, normally at power-on, and applies appropriate DC-to-DC conversion (pass-through, step-down, or boost regulation) according to the design requirements of the HDD.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: February 19, 2008
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Bryan S. Rowan
  • Patent number: 7333310
    Abstract: A bonding pad arrangement for an integrated circuit includes a bonding pad fabricated on a bonding area to enable bonding. A first ESD resistor is fabricated adjacent the bonding area, and at least a second ESD resistor is fabricated adjacent the first ESD resistor and the bonding area. The bonding pad extends beyond the bonding area to connect to the first ESD resistor and to the at least second ESD resistor, thereby providing at least two input ESD circuits for at least one current consuming electronic circuit from the single bonding pad.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: February 19, 2008
    Assignee: STMicroelectronics, Inc.
    Inventor: David Charles McClure
  • Patent number: 7332834
    Abstract: A power outlet device for a charger comprises an input port, a DC power supply unit, a control unit, a current sensor, a switch, and an output port. The input port of the power outlet device for a charger is used to receive an AC power, and the current sensor and the switch are controlled by the control unit to output the AC power from the output port. Wherein the control unit monitors and controls the current value according to the current sensor and the switch to determine transmission of the AC power so as to effectively manage power and save energy.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: February 19, 2008
    Assignee: Powertech Industrial Co., Ltd.
    Inventor: Yu-Lung Lee
  • Patent number: 7330346
    Abstract: The invention provides a means for estimating a self-bias voltage under arbitrary etching conditions via a simple procedure.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: February 12, 2008
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Shoji Ikuhara, Hideyuki Yamamoto, Daisuke Shiraishi, Akira Kagoshima
  • Patent number: 7330342
    Abstract: A multiple function safety compliance test instrument includes a high voltage output switching relay protected by a solid state in-line circuit breaker.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: February 12, 2008
    Assignee: Associated Research, Inc.
    Inventors: Roger A. Bald, Pin-Yi Chen
  • Patent number: 7329969
    Abstract: It is difficult to increase consumption current of a bus-powered USB device. In order to solve this problem, a conversion cable for a DC connector and a USB connector is adopted in a USB device provided with a USB cable and a DC connector; a state in which power supply voltage is supplied to two sets of USB cables is detected; and a transistor power supply switch is turned on with a logical product thereof. An identification circuit which raises the potential of ground is incorporated in a USB conversion cable to be distinguished from an AC adaptor. When the AC adaptor is connected, the USB device operates as a self-powered USB device.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: February 12, 2008
    Assignee: TEAC Corporation
    Inventor: Susumu Niinuma