Patents Examined by Harry E. Moose, Jr.
  • Patent number: 4607313
    Abstract: A static discharger for discharging charge accumulation from the surface of the wing of an aircraft, comprises a generally flat layer of non-conductive material which is dimensioned and configured so that it can be secured to a portion of the wing surface and so as to conform generally to the shape of the wing surface. A generally flat base member is dimensioned and configured so as to be capable of being placed in conforming relationship with at least a portion of the surface of the layer of non-conductive material which insulates the base member from electrically contacting the surface of the aircraft. A plurality of strands formed of a discharging material are embedded in the base member. The plurality of strands are electrically connected to the wing surface of the aircraft so that charge accumulation may pass from the wing surface of the aircraft to the plurality of strands and be discharged at the trailing ends of the strands.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: August 19, 1986
    Assignee: Shaw Aero Devices, Inc.
    Inventors: James R. Shaw, John W. Velsor
  • Patent number: 4602308
    Abstract: A circuit for attenuating interfering voltage excursions occurring in either the common mode or transverse mode. An isolation transformer having primary and secondary windings separated by a conductive grounded shield has connected across one or both of its windings a shunt path comprising a capacitor in series with a breakdown device of predetermined bi-directional threshold conduction level with a dead band.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: July 22, 1986
    Assignee: Control Concepts Corporation
    Inventor: Herbert R. Montague
  • Patent number: 4595966
    Abstract: An arrangement for the protection of a transistor, particularly a MOS-switching transistor including a zener diode connected between the gate and source terminals for limiting the gate potential and a switch-off transistor connected to the control circuit of the MOS-transistor for grounding the gate thereof and switching it off. First and second monitoring circuits are coupled between the MOS-transistor and the switch-off transistor for producing a signal switching on the switch-off transistor in response to a drop in the load current and an increase in the output voltage of the MOS-transistor. First and second timing circuits block the signals of the monitoring circuits for predetermined intervals.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: June 17, 1986
    Assignee: Siemens Aktiengesellschaft
    Inventors: Anton Huber, Jeno Tihanyi
  • Patent number: 4595967
    Abstract: An electronic circuit for the performing of a monostable switching function in a bistable relay through the conversion of binary input signals into control signals for the bridge switching circuit consisting of two bridge branches with complementary operating electronic switches. The flow direction of the current is reversible in the relay through intermediary of the bridge switching circuit, and the relay is switchable at each change in the level of the input signal through a pulse with a predetermined energy content.
    Type: Grant
    Filed: January 12, 1984
    Date of Patent: June 17, 1986
    Assignee: Diehl GmbH & Co.
    Inventor: Erwin Potthof
  • Patent number: 4593338
    Abstract: A control transistor (3) is connected between a power supply terminal (1) and an output terminal (19). The base bias of the control transistor (3) is controlled by bias control transistors (12, 13), thereby the output voltage is maintained at a constant value. An overcurrent state is detected by a current control detecting transistor (22), and the base bias of the control transistor (3) is controlled by the bias control transistors (12, 13), so as to prevent the overcurrent. The current control detecting transistor (22) further detects the time when the potential of the output terminal (19) becomes approximately 0 V by, e.g., short-circuiting of a load, so as to control the base bias of the control transistor (3) through the bias control transistors (12, 13), thereby the current to the load is decreased to a value considerably smaller than a limited value for preventing the overcurrent.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: June 3, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koji Takeda, Takeshi Sugimoto, Yusuke Yamada
  • Patent number: 4590534
    Abstract: A tube for integrated circuits, which comprises:an electrically conductive substrate sheet formed by laminating an electrically conductive thin layer onto at least one side of a transparent sheet of a synthetic resin, said substrate sheet being bent plural times in a parallel fashion to thereby form an upper section, left and right sections depending therefrom, left and right bottom sections and left and right upright sections spaced away from each other;a covering member formed of left and right resting pieces for resting an integrated circuit thereon; andan electrically conductive band-like lining sheet formed by laminating an electrically conductive thin layer onto at least one side of a transparent band-like sheet of a synthetic resin;said lining sheet being fixedly bonded at both side edges to the lower faces of said resting pieces.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: May 20, 1986
    Assignee: Fujimori Kogyo Co., Ltd.
    Inventors: Yoshihiro Akamatsu, Tadashi Azuma, Toshio Ishida
  • Patent number: 4589053
    Abstract: A method of charging or discharging a member including the steps of, opposing to a member to be acted on, a discharging member having a dielectric member, an inducing electrode and a discharging electrode sandwiching the dielectric member so that the discharging electrode faces the member to be acted on, applying an alternating voltage between the inducing electrode and the discharging electrode to produce a surface discharge on a surface of the dielectric member at the discharging electrode side, wherein a charge density of the surface discharge area is changed in the direction of the width of the discharging electrode, and moving the member to be acted on relative to the discharging electrode to be subjected to a low charge density portion and then to a high charge density portion to charge or discharge the member to be acted on by the thus formed surface discharge.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: May 13, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nagao Hosono, Yukio Nagase, Tatsuo Takeuchi, Hidemi Egami, Hiroshi Satomura
  • Patent number: 4589049
    Abstract: A protection circuit for an integrated circuit that is connected across a power source includes a first transistor and a zener diode or equivalent circuit arrangement for causing the first transistor to conduct if the integrated circuit receives an excessive voltage from the power source. A measuring resistor is connected to the emitter of the first transistor, and a voltage drop appears across the measuring resistor if the first transistor conducts. A comparator is provided to compare the voltage across the measuring resistor to a reference voltage. The output of the comparator drives the base of a second transistor, the emitter of which is connected to the collector of the first transistor and the collector of which is connected to the base of the first transistor. Current through the second transistor renders the first transistor more conductive.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: May 13, 1986
    Assignee: TELEFUNKEN electronic GmbH
    Inventor: Gerhard Krumrein
  • Patent number: 4589047
    Abstract: To protect the operator of an electrically powered apparatus in a damp room or in the presence of water or other electrically conductive fluid against an electric shock, there is provided a protective device comprised of a probe in the form of a double conductor which the user cannot contact when handling or operating the apparatus. In the presence of a conductive fluid the impedance of the probe changes. The probe is connected to the input of a trigger switch circuit which includes a semiconductor switch. The trigger circuit triggers the semiconductor switch when the impedance of the probe changes. The current which flows as a result of the closing of the semiconductor switch releases an automatically opening switch, the contacts of which lie in the incoming power supply wires of the apparatus, which contacts are normally held closed by means of a material which is fusible upon direct or indirect heating by means of said current.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: May 13, 1986
    Inventors: Harry Gaus, Hagen Gross
  • Patent number: 4589048
    Abstract: An apparatus for detecting a ground fault occurring in a power system which furnishes an AC power from a variable-voltage variable-frequency power supply to a load via a voltage transformer. The apparatus compares a zero phase sequence current with a reference value and, upon detection of occurrence of a ground fault, produces an output signal representing the ground fault. Prior to such comparison, the zero phase sequence current is so processed as to be independent of the frequency of the power system or the reference value is so processed as to be dependent on the said frequency.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: May 13, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Nobuharu Takata
  • Patent number: 4587589
    Abstract: In a feed-through unit of a conductor (2) through an opening in a conducting wall, the conductor together with shunt elements connected between the conductor and the wall--which shunt elements have a first and a second contact surface with a conducting coating--forms a rotationally symmetrical or mirror symmetrical configuration which completely or substantially closes the opening.In order to guarantee an even thermal stress on the individual shunt elements, the latter are so formed that the first contact surface and the second contact surface run parallel and the shunt element is located in each case essentially between the two contact surfaces. Several shunt elements can be arranged in shunt rows, whereby successive shunt elements are seriated either directly or separated by conducting intermediate layers.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: May 6, 1986
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventor: Alois Marek
  • Patent number: 4587592
    Abstract: A zinc oxide lightning protector, wherein end plates are mounted at the ends of an insulator and a zinc oxide element section is arranged between the cover plates. Support metal members are mounted on the cover plates between the zinc oxide element section and the insulator to support an insulation cylinder therebetween. A space is formed between at least an end of an insulation cylinder and a corresponding cover plate to absorb the expansion or contraction of the insulation cylinder due to temperature changes, thus preventing the insulation cylinder from deforming. The elements are eccentrically arranged against the insulation cylinder, to thereby cause the gas flow along peripheral direction so that the laminar flow is changed into a turbulent flow. Thus, the heat conduction is improved to improve the radiation characteristic of the zinc oxide element section.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: May 6, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Kouichi Nakano, Seiichi Maruyama, Seizo Nakano, Masatomo Sato
  • Patent number: 4587590
    Abstract: A fail-safe device for removing power from controlled circuitry upon the occurrence of an undesired operating condition is disclosed. The fail-safe device includes means for detecting a short circuit in the controlled circuitry and for indicating the existence of an undesired operating condition if a short is detected. The fail-safe device further includes a non-volatile memory for retaining data through a power outage so that the existence of an undesired operating condition is remembered upon return of the power. The data stored in the non-volatile memory may also be useful in investigating an accident or malfunction. The fail-safe device still further includes a reset button which returns power after an undesired operating condition if it is momentarily depressed.
    Type: Grant
    Filed: February 15, 1984
    Date of Patent: May 6, 1986
    Assignee: Electronics Corporation of America
    Inventors: John L. Bala, Michael McCarron, Richard E. Zapolin
  • Patent number: 4587591
    Abstract: A power supply for an ozone generator utilizes a magnetic-leakage type step-up transformer in series with a saturable core inductor which are connected in series across a low voltage AC source. The secondary of the transformer is connected to the ozone generator and the inductor has a control winding which is connected to a continuous (i.e. DC) current source whose value controls the inductance of the inductor. Since the voltage of the low voltage AC source is divided between the inductor and the transformer, the DC current effectively controls the magnitude of the voltage across the transformer primary and thereby controls the high AC voltage supplied to the ozone generator.
    Type: Grant
    Filed: September 5, 1984
    Date of Patent: May 6, 1986
    Assignee: Degremont
    Inventors: Maurice Adatto, Christian Coste
  • Patent number: 4586187
    Abstract: The electrode of an electric arc melting furnace is adjusted in height by a hydraulic cylinder having an operating chamber which is connected via a servo valve to a hydraulic pressure source or, respectively, to a reservoir. The servo valve is actuated by a control signal which is produced by a comparison of the actual value of the electric arc current and a predetermined desired current value. Additionally, the pressure in the operating chamber of the cylinder is measured and supplied to the control circuit as a feedback value. An important advantage deriving from the present invention is the ability to provide a control of the electrode motion by virtue of the measured pressure even before the electric arc is ignited and to steadily hydraulically support the electrode under any condition of operation. Accordingly, uncontrolled motions of the electrode are prevented which motions might result in an increased danger of breakage, in overcurrents or short-circuits.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: April 29, 1986
    Assignee: Mannesmann Rexroth GmbH
    Inventors: Theo Hein, Gotz Holtfreter
  • Patent number: 4586106
    Abstract: A static dissipative touch device is provided for discharge of static electricity. The device is attached directly or immediately adjacent to electronic equipment which is susceptible to damage from static electricity. The device is electrically conductive and is readily contacted by the user of the equipment prior to use, to drain off the static electricity and discharge it to ground.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: April 29, 1986
    Inventor: Thomas G. Frazier
  • Patent number: 4586104
    Abstract: Overvoltage protection devices operative to prevent damage to electrical equipment in response to overvoltages in the form of fast transients and also to continuous overvoltages utilizes clamping or discharge elements which conduct in response to overvoltages or current surges. A high voltage responsive element, suitably a spark gap, is connected to the input of the device which goes to the line, while a lower voltage responsive element, suitably an avalanche diode or diodes or a zener diode or diodes, is connected to the output of the device which goes to the equipment to be protected. A resistor is connected between the spark gap and the avalanche device in series with one side of the line on the circuit to be protected.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: April 29, 1986
    Assignee: RIT Research Corp.
    Inventor: Ronald B. Standler
  • Patent number: 4584623
    Abstract: Electronic circuitry senses over-voltage and under-voltage within narrow threshold limits, and voltage interruption, in the energization circuit of a sensitive load, such as a refrigeration compressor motor load, to protect against overheating damage and burn-out. Setting to a nominal operating line voltage is provided for to obviate readjustment to the threshold voltages of a window comparator utilized to sense over-voltage and under-voltage.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: April 22, 1986
    Assignee: Watsco, Inc.
    Inventors: Ernesto Bello, Joseph F. Mibelli
  • Patent number: 4584487
    Abstract: A component control arrangement for transit-type vehicles having a distributed plurality of vehicle components to be monitored and controlled, includes a number of function control modules, each being associated with a specific vehicle function; as for example, wheel-skid, climate-control, and verification systems. The function control modules, each communicate in a multiplex arrangement over a shared data bus and a transceiver arrangement, with a distribution unit. The distribution units have an output configuration allowing connection to a variety of vehicle operating devices including lamps, switches, solenoid valves, and electric motors. The function control modules evaluate status indications originating from the vehicle operating devices and transmitted through the distribution units and a transceiver arrangement.
    Type: Grant
    Filed: October 2, 1984
    Date of Patent: April 22, 1986
    Assignee: WABCO Westinghouse Fahrzeugbremsen GmbH
    Inventors: Karl-Heinz Hesse, Peter Liermann, Detlev Neuhaus
  • Patent number: 4584624
    Abstract: A station protector, particularly for telephone lines, has a housing with wells in which are positioned protector module assemblies, one for each line. Each line is connected to a basket member positioned in the bottom of a well and having cantilever legs extending upwards. A protector module assemlby is insertable in the top of each well and a bottom electrode of the protector module pushes down the basket member against a spring bias. If no protector module assembly, or if only a housing of such an assembly without a protector module, is inserted in a well, the basket member moves up and the legs move into contact with a metal collar at the top of the well, the collars connected to a ground terminal. The protector module assemblies connect to the metal collars, as by being screwed into position.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: April 22, 1986
    Assignee: Northern Telecom Limited
    Inventor: William W. Hines