Patents Examined by Peter S. Wong
  • Patent number: 6351098
    Abstract: An electromagnetic induction type connection terminal for connecting a power supply station with a battery for charging the battery has a charging paddle and a charging receptacle. The charging paddle has a primary coil that is supplied with a current from the power supply station. The charging receptacle has a secondary coil connected to the battery. When the primary coil is supplied with a current from the power supply station with the charging paddle plugged into the charging receptacle, an electromotive force is induced into the secondary coil. The charging receptacle has an enclosure for accommodating the secondary coil. The enclosure forms a shield against electromagnetic waves. The charging receptacle has a communication unit for communicating information with the charging paddle to control the charging. The communication unit is located within the enclosure.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: February 26, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventor: Masaaki Kaneko
  • Patent number: 6350952
    Abstract: Disclosed is a semiconductor plastic package having a structure in which a metal sheet having a size nearly equivalent to a printed wiring board is disposed nearly in the central portion in the thickness direction of the printed wiring board. The metal sheet and a signal propagation conductive circuit on a front surface of the printed wiring board are insulated from each other with a thermosetting resin composition. The conductive circuit on the printed wiring board surface is connected to a conductive circuit formed on an opposite surface of the printed wiring board, or to a conductive circuit pad formed for being connected with solder balls with a conductive through hole. A semiconductor chip, wire and bonding pad are encapsulated with a resin. The semiconductor plastic package has at least one blind via hole made in the opposite surface so as to be directly connected to the metal sheet. The blind via hole has an inner wall rendered thermally conductive.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: February 26, 2002
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Morio Gaku, Nobuyuki Ikeguchi, Toshihiko Kobayashi
  • Patent number: 6351097
    Abstract: The present invention illustrates about the managing device for batteries which expands the durability of batteries and enhances the charging effect by maintaining the termination voltage of the rechargeable batteries used in all kinds of electrical devices and managing method for rechargeable battery thereof. The present invention provides a managing system for rechargeable batteries comprising a plurality of cells, a closed loop circuit method which connects the cells in parallel connection electrically, an electrical load means having regular voltage which is the sum of the maximum output voltage among the plurality of cells and being in parallel connection with the rechargeable cells which are connected in parallel with the closed loop circuit method, a switching means inserted between the plurality of cells and the electrical load means in order to cut off the current flowing in the electrical load means in case it reaches the discharge termination voltage of the plurality of rechargeable cells.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: February 26, 2002
    Inventor: Se Kwang Oh
  • Patent number: 6351102
    Abstract: An automotive battery charging system tester for testing the charging system of an automotive vehicle includes AC and DC voltage measurement circuits and a microprocessor controlled testing sequence. The microprocessor is used to perform a series of tests and to instruct an operator to perform steps associated with performing those tests. Through the application of various loads at various engine speeds, the tester is capable of identifying faults in the battery charging system including a bad battery, problems in the alternator or associated electronics, and problems in the starting system.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: February 26, 2002
    Assignee: Midtronics, Inc.
    Inventor: Michael E. Troy
  • Patent number: 6351101
    Abstract: This invention uses a group of components set in parallel transmission lines and terminated with hi-speed switching circuits. The charging and discharging of the circuits are controlled by the opening and closing of the switching circuits causing a percentage of the unused energy to be reflected back to the charge source, returning a portion of the unused charge to be used at a later date when the source is needed to drive a component.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: February 26, 2002
    Inventor: Haynes Ellis
  • Patent number: 6348782
    Abstract: An uninterruptable power supply system for producing an AC voltage from at least one of a DC power source or an AC power source includes an input terminal configured to receive an AC voltage from an AC power source, and an inverter operative to produce an AC voltage at an output thereof from a DC power source. A ferroresonant transformer circuit includes a transformer having an input winding, a output winding, and a third winding that forms part of a resonant circuit that produces saturation in the output winding when an AC voltage on the input winding exceeds a predetermined amplitude. A transformer input control circuit is coupled to the input terminal and to the inverter output and is operative to couple at least one of the input terminal and the inverter output to the input winding.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: February 19, 2002
    Assignee: Powerware Corporation
    Inventors: George W. Oughton, Jr., John Kyle Earle
  • Patent number: 6348783
    Abstract: A comparator 5 changes an output signal from [H] to [L] when a voltage drop VR occurring at a current sensing resistance Rsens becomes greater than a reference voltage VS by a current IL. When the output signal of the comparator 5 is [H], a control circuit 1 outputs a control signal of a duty ratio responsive to the voltage deviation signal outputted from a differential amplification circuit 4 to a switching element 2. When the output signal of the comparator 5 is [L], the control circuit 1 outputs a control signal, which turns off the switching element 2, to the switching element 2. When the switching element 2 is switched, the control circuit 1 connects a filter F of a large time constant to the input side of the comparator 5 by switching off a switching element Tr1 in a predetermined period of time.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: February 19, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventor: Tetsuo Tateishi
  • Patent number: 6348798
    Abstract: A voltage measuring circuit for measuring a voltage level of an unknown voltage source, including a capacitor configured for storing a charge from the unknown voltage source, a switch such as a transistor, configured to discharge the capacitor after the capacitor has reached a known threshold voltage, a microprocessor which controls the switch and measures the amount of time required to charge the capacitor to the threshold voltage, allowing the voltage level to be measured without disconnecting the capacitor from the circuit.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: February 19, 2002
    Assignee: Alpha Smart, Inc.
    Inventor: Bradley M. Daw
  • Patent number: 6348777
    Abstract: In a power supply of a patient care system, a power management system monitors the temperature of an off-line switcher and adjusts the amount of current supplied by the off-line switcher to operate the off-line switcher within a range of temperature and power limits.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: February 19, 2002
    Assignee: Alaris Medical Systems, Inc.
    Inventors: Houston A. Brown, John Mossman, George C. Lysy
  • Patent number: 6346794
    Abstract: Disclosed is a method for controlling efficient charge and discharge of a plurality of batteries. At the beginning of the discharge cycle, parallel discharge of the rechargeable batteries is performed until the batteries discharge to a predetermined percentage of total capacity. Following, serial discharge is performed with the secondary battery being fully discharged before the primary battery is discharged. Thus, the rechargeable batteries respectively are each at least partially discharged at start of charging. When charging commences, the rechargeable batteries are first charged serially until predetermined percentages of capacity are realized. The serial charging is performed with full constant current. Following, the batteries are charged in parallel utilizing a constant voltage whereby the current decreases as the respective capacities approach 100%. As a result, the plurality of batteries are charged more efficiently and in a shorter time than if charge individually or serially.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 12, 2002
    Assignee: International Business Machines Corporation
    Inventor: Shigefumi Odaohhara
  • Patent number: 6346792
    Abstract: A battery charging and maintenance system for providing long term maintenance and charging of batteries. The battery charging and maintenance system includes a charging assembly designed for converting alternating current into direct current for use in charging batteries, a golf cart regulator assembly electrically couplable to the charging assembly, a golf cart charging lead assembly for electrically coupling the charging assembly to the golf cart regulator assembly, an automobile regulator assembly electrically couplable to the charging assembly, and an automobile charging lead assembly for electrically coupling the charging assembly to the automobile regulator assembly.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: February 12, 2002
    Inventors: John Summerfield, Victor Wright
  • Patent number: 6346793
    Abstract: A charger (1) includes a box enclosure (2), terminals (11, 12, 13), and a protective terminal cover (14) which in turn includes a top plate (15) extending at right angles to a pair of guide rails (6). The terminal cover (14) is pivotally supported by a pair of pivot pins (17) inside the box enclosure (2) such that the terminal cover (14) is pivotal between a protruding position, in which the top plate (15) is located directly above and protects the terminals and a retracted position, in which the terminal cover (14) is completely retracted inside the box enclosure (2). The terminal cover (14) is biased to the protruding position by a torsion spring (18) when a battery pack (40) is not set on the charger (1) for a recharge, whereas the terminal cover is manually moved to the retracted position against the biasing force of the torsion spring when the battery pack is slid on the charger into a set position.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: February 12, 2002
    Assignee: Makita Corporation
    Inventors: Yoshinori Shibata, Junichi Masuda
  • Patent number: 6346796
    Abstract: Contacts 3, 6, which are opened/closed by the displacement of a heat responsive element 7, are interposed between first and second terminals 2, 9, and a heat generating resistor 8 is interposed between the first terminal 9 and a third terminal 10, whereby the heat responsive element 7 is displaced by heat generated when a current is caused to flow in the heat generating resistor 8 via the third terminal 10.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: February 12, 2002
    Assignee: Uchiya Thermostat Co., Ltd.
    Inventor: Hideaki Takeda
  • Patent number: 6346817
    Abstract: A float current probe measuring a float current flowing in a conductor comprises a core adapted to be magnetically coupled to the conductor. Excitation and field cancellation windings are magnetically coupled to the core. A detector detects when energy in the excitation winding reaches a predetermined threshold corresponding to a saturated core condition. A timer measures first and second delays needed to saturate the core as a result of the excitation winding being energized through a switch circuit in the forward and reverse polarity successively. A computing unit determines a magnetic field induced by the conductor based on the first and second measured delays. The field cancellation winding is energized by a current source with a current level and direction as a function of the computed magnetic field, to cancel the magnetic field induced by the conductor. The current level is representative of the float current in the conductor.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: February 12, 2002
    Assignee: Multitel Inc.
    Inventors: Martin Bernier, Michel Mailloux
  • Patent number: 6346791
    Abstract: The invention concerns a recharging device (4), comprising and consisting of photovoltaic sensors (5), alveolar lens particles (11), light energy amplifier (6), electronic management unit (7), magnetic counter-weight (17), steel balls (18), spring mechanism (22) with its manual butterfly winder (23), alternator (25) and battery (2), consisting in a single extra flat system, comprising several forms of recharging and in all conditions and all positions, inserted and fixed, matching the shape of the mobile (cellular) portable telephone (1), or on the protective case (21), or on a battery (2) or any other communication means comprising a transmitter-receiver, providing them with autonomy, causing them to operate by delivering voltage and electric current (13) so as to recharge them, maintain them and enabling them to operate, using daylight (10), artificial lighting (8), vibrations (20), movements (19) and the spring manual winder.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: February 12, 2002
    Assignee: Sarl Tecknisolar-Seni
    Inventor: Pascal Barguirdjian
  • Patent number: 6344984
    Abstract: A power supply circuit for use in a LCD device includes a voltage multiplier which outputs a multiplied voltage VLCD1 and a median voltage VLCD2. A plurality of voltage followers are grouped in two groups each operating on the multiplied voltage VLCD1 or the median voltage VLCD2, thereby reducing power dissipation of the LCD device.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: February 5, 2002
    Assignee: NEC Corporation
    Inventor: Kiyoshi Miyazaki
  • Patent number: 6344988
    Abstract: A power unit is provided which can perform stable feedback control by reducing a feedback gain, and sufficiently cope with fluctuations in the output voltage occurring according to fluctuations in the input voltage caused by fluctuations in the rotational speed of an engine. A pair of variable control bridge circuits are connected to three-phase output windings of a three-phase generator driven by the engine, and connected in an antiparallel manner to each other to form a cycloconverter for generating a single-phase alternating current to be supplied to a load. A voltage-detecting circuit detects a voltage of the three-phase alternating current. An effective voltage value-calculating circuit calculates an effective value of the voltage of the alternating current. A reference sinusoidal waveform-forming circuit generates a voltage of a reference waveform for controlling the single-phase alternating current.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: February 5, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Koichi Asai, Motohiro Shimizu, Hiroyuki Eguchi
  • Patent number: 6344731
    Abstract: Disclosed is a battery gauging device during a battery charging, which is capable of gauging the charged capacity during a battery charging in a terminal. The device according to the invention comprises a charger for converting an AC voltage to a DC voltage, and outputting the converted voltage, a battery pack including a battery for charging an electric charge, first switching means for switching on/off the DC voltage, and second switching means switched on/off in accordance with a battery charge enable (BCE) signal so as to temporarily discharge the charged capacity during the battery charging, and a terminal including a battery gauging section for gauging a charged capacity inputted from the battery pack and a microprocessor for outputting the BCE signal to the switching means, and displaying the gauged value on a display section.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: February 5, 2002
    Assignee: LG Electronics Inc.
    Inventor: Woo Seog Park
  • Patent number: 6341862
    Abstract: The present invention relates to a color filter having a plurality of colored members as pixel portions which are formed by using dots of a plurality of color inks having different spectral characteristics. Light transmitting ink dots other than the color ink dots are respectively formed on the pixel portions.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: January 29, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Katsuhiro Shirota, Koichiro Nakazawa, Akihiko Yamada
  • Patent number: 6343025
    Abstract: A non-control detection protecting circuit is prevented from malfunctioning when a switching converter is started. A latch control circuit 40 makes a non-control detection discrimination signal SDT invalid during a soft start operation. Moreover, a driving circuit 33 stops driving signals SD1 and SD2 for a predetermined period after it is detected that an overload state is set based on the non-control detection discrimination signal SDT, and a soft start circuit 35 is then controlled to carry out the soft start operation. Thus, an intermittent operation is carried out. Furthermore, the soft start control circuit 35 is controlled by the intermittent operation control circuit 50, resulting in the completion of the discharge of a capacitor 36 which sets a soft start period when the soft start operation in the intermittent operation is started.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: January 29, 2002
    Assignee: Sony Corporation
    Inventor: Kiyokazu Nagahara