Patents Examined by Peter S. Wong
  • Patent number: 6369553
    Abstract: An apparatus and a method for decreasing the voltage from a source. The apparatus includes a voltage reference source. The voltage reference source is coupled to a first transistor and to a decoupling capacitor. The first transistor is a negative-channel metal oxide (“NMOS”) transistor which has an output voltage equal to a gate source voltage of the NMOS transistor minus an NMOS transistor threshold voltage.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: April 9, 2002
    Assignee: Intel Corporation
    Inventor: Jeffrey B. Davis
  • Patent number: 6369556
    Abstract: When the supply of electric power from a power supply (101) to a load (102) is controlled in a switching manner by a semiconductor switch (QA), reference current generating device (R11, Q2, Q3) generates a reference current, and reference voltage generating device (QB) generates a reference voltage (VDSB) based on the reference current. Detector CMP1 detects a difference between a terminal voltage (VDSA) of the semiconductor switch (QA) and the reference voltage, and the semiconductor switch (QA) is on/off controlled in accordance with the difference between the terminal voltage (VDSA) of the semiconductor switch (QA) and the reference voltage.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: April 9, 2002
    Assignee: Yazaki Corporation
    Inventor: Shunzou Ohshima
  • Patent number: 6369546
    Abstract: A system and method for charging a lithium-ion battery in which the battery is charged by a bulk charger at a high rate until one or more of the cells reaches a predetermined series threshold voltage. When a predetermined cell threshold voltage is reached, the controller provides instructions as to whether to reduce or terminate the cell charging by the bulk charger. At this point in time, the redundant power supplies begin charging each cell individually through balancing switches. The balancing switches will turn off as their respective cells reach a predetermined cell threshold voltage. Ultimately, each cell will be fully charged to an identical high charge state.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: April 9, 2002
    Assignee: The Boeing Company
    Inventor: Stanley Canter
  • Patent number: 6369463
    Abstract: An apparatus and method for supplying alternating current power to electrical devices wherein a subpanel having a plurality of switches allows a user to preset selected electrical devices for either automatic or manual load pick up by a battery during a utility power loss. Battery power is supplied only to predetermined electrical devices so as to avoid overload of the battery.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: April 9, 2002
    Assignee: Alternate Energy Concepts, Inc.
    Inventor: Thomas Maiorano
  • Patent number: 6370006
    Abstract: An electrostatic chuck and a process of manufacturing an electrostatic chuck for supporting a semiconductor wafer during wafer processing and for providing a plurality of gas inlet channels extending through the chuck and through which thermal transfer gas can be supplied to the back side of the wafer to enhance the thermal transfer between the wafer and the chuck, embedding a plurality of inserts in a ceramic electrostatic chuck, each insert comprising a matrix of the ceramic of which the electrostatic chuck is made and a plurality of removable elongate members, and removing the elongate members to form a plurality of elongate holes providing the plurality of gas inlet channels.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 9, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Ananda H. Kumar, Kadthala Narendrnath, Shamouil Shamouilian
  • Patent number: 6369579
    Abstract: Present invention relates to a process for determining the electrical conductivity of fluids by means of conductively operable conductivity measuring cells using analysis and processing measurement technology, wherein the conductivity of the fluid is determined from a measured resistance value and the geometric measuring cell constants (k); in order to reduce error in the determination of the electrical conductivity, this is determined in the following manner: by using a measurement converter, the impedance of the measuring cell immersed in the fluid is determined for at least two frequency values of an alternating voltage, the frequency-independent parameters (n, Q) and the desired resistance (Rf1) are determined based on the determined impedance values and based on an equivalent circuit diagram comprised of a parallel connection of a capacitor (Ccell) representing the measuring cell capacitance, an ohmic resistance (Rf1) representing the desired resistance of the fluid inside the conductivity measuring ce
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: April 9, 2002
    Assignee: Endress +Hauser Conducta Gesellschaft fur Mess- und Regeltechnik mbH+Co.
    Inventor: Harald Riegel
  • Patent number: 6366438
    Abstract: A circuit interrupter rotary contact arm is provided. Rotational torque is applied to the contact arm by a spring force from one or more springs arranged along the sides of the contact arm. The contact arm includes an edge surface having one or more features or bumps. The bumps are configured cause the one or more springs to exert increased spring force and to increase frictional resistance, which increases the rotational torque required to move the contact arm.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: April 2, 2002
    Assignee: General Electric Company
    Inventor: Rolf-Dieter Bauer
  • Patent number: 6366054
    Abstract: A method for determining the state of charge (SOC) of a battery by measuring its open circuit voltage (OCV) either with the battery in a fully rested state of chemical and electrical equilibrium or an active state during a period in which the battery settles after charge or discharge is stopped. A first type algorithm is developed to correlate the OCV in a fully rested condition (OCVREST) to the state of charge at which that measurement is taken. A second type algorithm is developed that predicts a final settling OCV of a battery (OCVPRED), based on the set of parameters of OCV, rate of change of OCV, and battery case temperature, acquired during the settling period of a battery not at rest. To determine the SOC of a battery being tested that is in the fully settled state the measured OCVREST is applied to the first type algorithm.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: April 2, 2002
    Assignee: Honeywell International Inc.
    Inventors: Steven Hoenig, Harmohan Singh, Thirumalai G. Palanisamy
  • Patent number: 6366441
    Abstract: An electromagnetic actuator is equipped with two springs which act in opposite directions, and an armature that is connected to the springs and is supported in an unactivated state in a neutral position provided by the two springs. The armature is coupled to a mechanical element such as a valve of an engine. The actuator includes a pair of electromagnets that drive the armature between a first terminal position and a second terminal position, and a power supply device that controls the voltage supplied to the electromagnet attracting the armature to a constant voltage when the armature is driven from one of the terminal positions to the other terminal position. The voltage supplied to the electromagnets is maintained at a constant value and the larger current flows in the larger is the gap between the armature and the yoke and smaller is the counter electromotive force.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 2, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hidetaka Ozawa, Yasuo Shimizu, Chihaya Sugimoto, Minoru Nakamura, Jirou Fujimoto, Toshihiro Yamaki
  • Patent number: 6366067
    Abstract: An improved voltage regulator is disclosed, which includes a pulse width modulator for generating a switching signal at a modulated frequency. A drive circuit is coupled to the output of the pulse width modulator, and a switching transistor is coupled to the output of the drive circuit and to an input voltage. The switching transistor generates an output voltage.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: April 2, 2002
    Assignee: Intel Corporation
    Inventors: Michael T. Zhang, Harry G. Skinner
  • Patent number: 6366068
    Abstract: A switching power supply comprises: a primary switching element for controlling an output voltage or an output current by switching the current of an input power supply circuit; a current detection circuit for detecting a current flowing through said primary switching element, based on the potential difference occurring across the ends of said primary switching element; and a switching control circuit for controlling said primary switching element so that the current does not exceed a predetermined value.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: April 2, 2002
    Assignee: Murata Manufacturing, Co., Ltd.
    Inventor: Yasunobu Morishita
  • Patent number: 6365992
    Abstract: A changeable power sensing switch includes a sensor, a process actuating circuit and an output control port for detecting and sensing different external signals and triggering a work unit to perform work desired. The sensor sensitivity may be adjust to suit different dielectric medium and sensing distance. The switch is more versatile and has wider applications than conventional mechanical switch.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: April 2, 2002
    Inventor: Chueh-Ming Yang
  • Patent number: 6366058
    Abstract: A capacitor power supply unit for generating an auxiliary direct voltage supply from a main alternating voltage supply for powering an electrical consumer includes a storage capacitor and a charging capacitor. The storage capacitor provides an auxiliary direct voltage supply for powering an electrical consumer and the charging capacitor is operable for charging the storage capacitor with current generated by a main alternating voltage supply. Rectifying means rectify the current charging the storage capacitor. Switching means switch between first and second switch positions for enabling the charging capacitor to charge the storage capacitor and for disabling the charging capacitor from charging the storage capacitor. A switching time-determining member provides a switching time control signal to the switching means as a function of voltage output by the charging capacitor.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: April 2, 2002
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventor: Marco Honsberg
  • Patent number: 6362600
    Abstract: In a battery charging device 10 capable of detecting abnormalities in cells comprising batteries through a simple arrangement and terminating charge accordingly, cell temperature information Ta and cell temperature information Tb in charging operation within respective blocks A and B are detected through temperature sensors TM1, TM2 and a temperature detecting portion 38 incorporated in a battery package 50, the cell temperature information Ta of block A and cell temperature information Tb of block B are compared through a comparing/determining portion 35 wherein upon determining that temperature difference information Tdf is exceeding reference information for comparison Tref, instructions for terminating charging operations are sent from a control portion 36 to a charge current controlling portion 34 assuming that abnormalities have occurred in the cells comprising the block A or block B during charging operations.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: March 26, 2002
    Assignee: Makita Corporation
    Inventor: Kazuyuki Sakakibara
  • Patent number: 6362419
    Abstract: A pedestal structure includes a base and a cover; a tongue on one side of one of the base and cover and a groove in the corresponding side of the other for receiving the tongue when the base and cover are engaged; and a security mechanism having a first portion on an opposing side of one of the base and cover and a second portion on a corresponding opposing side of the other for securing together the base and cover and tightly engaging the tongue and groove.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: March 26, 2002
    Assignee: Utility Marketing Corporation
    Inventors: Bonnie C. Gallagher, Steven G. Cherry, Charles Edward McMurray
  • Patent number: 6362599
    Abstract: A battery protection system for a battery having a switching mechanism positioned intermediate to the positive terminal and an electrical load of the battery. A controller manipulates the switching mechanism between an open position and a closed position, the closed position connects the electrical load to the battery and the open position disconnects the electrical load from the battery. The battery protection system utilizes a battery state-of-charge detection system, which instructs the controller to open the switching mechanism when the detection system detects a battery state-of-charge that is lower than a threshold value. The battery protection system is also equipped with a vehicle status detection system, which instructs the controller to close the switching mechanism when a vehicle startup condition is detected by the vehicle status detection system.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: March 26, 2002
    Assignee: Delphi Technologies, Inc.
    Inventors: Steven Richard Turner, Kaushik Rajashekara, Gary Andrew Cameron
  • Patent number: 6359797
    Abstract: The invention relates to a DC/DC converter operating on the principle of a charge pump, comprising at least one charge pump capacitor and several controllable switches connected thereto. The switches are actuated by a control circuit with an oscillator. A skip mode comparator signals the charge pump alternatingly ON and OFF depending on the condition of the output voltage of the converter. Prior art converters featured high output current spikes and a heavy output voltage ripple. The converter in accordance with the invention reduces these problems by a regulator circuit which receives the control signal of the comparator and converts it into a signal characterizing the momentary ON/OFF duration ratio of the charge pump with which it controls the ON resistance of at least one of the switches so that the ON/OFF duration ratio of the charge pump can be set to a predetermined design value, at which the output current spikes of the charge pump are reduced.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: March 19, 2002
    Assignee: Texas Instruments Deutschland GmbH
    Inventors: Erich Bayer, Hans Schmeller
  • Patent number: 6359426
    Abstract: A voltage threshold circuit for the power factor correction stage of a power conversion system is provide. The circuit features a voltage threshold circuit with a comparator for (i) comparing a predetermined threshold voltage to the output voltage of a power factor correction stage of a power conditioner and (ii) outputting a signal if the output voltage is at least equal to the predetermined threshold voltage. The presence of the signal decreases the predetermined threshold voltage, thereby effectively changing the output voltage above which the comparator continues to output the signal.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: March 19, 2002
    Assignee: Enterasys Networks, Inc.
    Inventors: F. Williams Sarles, John Anthony DeGregorio
  • Patent number: 6359768
    Abstract: A shield for resisting the passage of electromagnetic emissions in a computer is formed from a rectangular plate having apertures for receiving various electrical connectors that insert into the computer. Each aperture in the plate has grounding members for engaging the connectors. The plate also has a row of spring-like wiping members along each of the four side edges. Two edges of the plate each have a single row of wiping members, and two edges of the plate have two opposed rows of wiping members. The opposed rows are interposed with each other in an alternating sequence. One of the two opposed rows forms a series of folds, and the other row forms a series of tabs. The shield is mounted to the side edge flanges of a rectangular opening in the wall of the computer. Two of the flanges slidingly engage the single row of wiping members. The other two flanges insert into the folds and contact with both the folds and the tabs.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: March 19, 2002
    Assignee: International Business Machines Corporation
    Inventors: Courtney Cleophas Eversley, Walter Adrian Goodman
  • Patent number: 6359442
    Abstract: A system for determining the operating characteristics of an energy source. The system comprises a controller for generating and shaping a time-varying voltage signal for application to the energy source; a converter for receiving from the energy source a time-varying return voltage signal and for converting the tire-varying return voltage signal into a digital signal. The amplitude of the time-varying return signal contains information representative of the operating characteristics of the energy source. The time-varying return voltage signal is produced in response to the time-varying voltage signal. The controller is responsive to the digital signal and determines the operating characteristics of the energy source. The controller generates display signals, and the display signals are representative of the operating characteristics of the energy source. The system also includes a display for displaying the display signals.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: March 19, 2002
    Assignee: Auto Meter Products, Inc.
    Inventors: Dale B. Henningson, Bryan R. Lundbeck