Patents Represented by Attorney Edwin E. Greigg

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  • Electronic ignition system and an internal combustion engine equipped with this system
    Patent number: 4250846
    Abstract: An electronic ignition system for an internal combustion engine allowing precise control of the instant of ignition of the air-fuel mixture, in which the mechanical components, particularly the high voltage distributor, are eliminated. This system comprises a transducer delivering two cyclic sequences of signals synchronous with the position of the stroke of the pistons, means for controlling the instant of emission of the sparks in all the operational states of the engine, distributing means supplying release signals to spark generators connected to the spark plugs. Application to internal combustion engines, particularly to multicylinder engines.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: February 17, 1981
    Assignee: Thomson-CSF
    Inventor: Christian Menard
  • Stereophonic sound reproducing system
    Patent number: 4251687
    Abstract: A loudspeaker unit having an improved quality of bass reproduction for use in a stereo system with a second unit, which is a mirror image of it, to provide a better three-dimensional feeling on hearing the reproduced sound and to provide an increase in the area of the sound producer or source which includes a bass or woofer loudspeaker housed in a chamber, whose volume, together with the properties of the loudspeaker, is so designed that a desired resonant frequency is produced. An exponential horn is placed at an opening of the chamber, whose design is based on a Helmholtz resonator, whose captive air volume takes over the function of an active diaphragm, and the resonant frequency of the horn resonator has a specific relation to the resonant frequency of the chamber and the loudspeaker.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: February 17, 1981
    Inventor: Hans Deutsch
  • Fuel injection system
    Patent number: 4250848
    Abstract: A fuel injection system for controlling a mixture-compressing, externally ignited internal combustion engine which includes a fuel apportionment valve controllable by means of an air flow rate meter, with the fuel pressure upstream of the apportionment point being variable by means of a pressure regulating valve having a movable valve member which separates two chambers connected by a throttle point, and wherein the fuel pressure upstream of the fuel apportionment valve is exerted on one side of the movable valve member, and the force of a spring and a control pressure, which is variable by means of a control element in accordance with operating characteristics of the internal combustion engine, are exerted on the other side of the movable valve member to thereby intervene easily in order to vary the fuel-air mixture using small control forces.
    Type: Grant
    Filed: January 17, 1979
    Date of Patent: February 17, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Wolf Wessel, Gerhard Stumpp, Volkhard Stein
  • Planning aid
    Patent number: 4250642
    Abstract: A planning aid is produced by the use of a transparent foil which is adhesive on one side, thus providing a surface for the adhesion thereto of planning elements and/or symbols having smooth surfaces, the foil being applied to a sheet containing a pictorial representation. The planning elements and/or symbols may themselves be of foil structure or of plastic-coated cardboard or the like. For the purpose of providing a permanent record of the juxtaposition of the planning elements and/or symbols to the pictorial representation, the surface with said elements and/or symbols adhering thereto may be photocopied.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: February 17, 1981
    Inventor: Harald Riehle
  • Fuel injection apparatus having at least one fuel injection valve for high-powered engines
    Patent number: 4249497
    Abstract: A fuel injection apparatus particularly suitable for high-powered engines, in which the pressure chamber of the fuel injection valve or valves is relieved of pressure during the pauses between injections by means of a correspondingly controlled obturation mechanism so that, when the valves are not tight, the undesirable injection of fuel during the pauses between injections is substantially prevented.
    Type: Grant
    Filed: December 5, 1978
    Date of Patent: February 10, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Franz Eheim, Max Straubel
  • Apparatus for correcting a fuel apportionment signal in an internal combustion engine
    Patent number: 4249498
    Abstract: Apparatus for correcting the fuel apportionment signal in an internal combustion engine during an alteration in quantity of the fuel which includes a first storage device charged according to the rpm, the storage value of which determines the content of a second storage device in accordance with certain time intervals and according to a specific function and the alteration signal of the second storage device is used for the correction of the fuel apportionment signal.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: February 10, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Ulrich Drews, Hans Schnurle, Michael Horbelt
  • Novel end-pressure connection device
    Patent number: 4249787
    Abstract: The invention relates to a novel end-pressure connection device to connect electrically at least two contacts in pin form. The device according to the invention is characterized in that it includes an insulating box in which is arranged at least one intermediate part or bar for each pair of pins to be placed in contact. The bar is formed of conducting material and each of its surfaces is provided with a contact stud designed to become applied on to the end of one of the pins in connecting position while at least one elastic means is arranged in said box so that it urges each stud of the bar towards the corresponding pin. The invention is particularly applicable to form a junction terminal or a power outlet.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: February 10, 1981
    Assignee: S.E.P.M. Societe d'Exploitation des Procedes Marechal
    Inventor: Prosper Welu
  • Circuitry for adjustment of biasing current for recording sound by two-head type tape-recorder
    Patent number: 4247875
    Abstract: A circuitry has a calibration signal generator, a higher frequency range output level adjusting circuit and a recording bias current adjusting variable resistor. The signal generator continually alternately gives output two kinds of calibration signals of lower and higher frequencies. The higher range adjusting circuit is operatively connected with the variable resistor, and adjusts output sound level, as indicated at an indicator, only of the higher frequency signal of the two calibration signals.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: January 27, 1981
    Assignee: Onkyo Kabushiki Kaisha
    Inventor: Satoshi Takahashi
  • Composite rotor blade root end
    Patent number: 4247255
    Abstract: A helicopeter rotor blade fabricated from laminated fiber-reinforced resin includes a blade root end attachment to the rotor hub that provides a structural extension capable of developing chordwise bending moment continuity across a single-pin joint. The extension is a spanwise continuation of the nose block and heel portions of the spar and continues inboard of the blade attachment pin about which the primary axial load-carrying portions of the spar are wrapped. The structural extension is formed as an integral part of the blade spar without secondary bonding or the use of pre-formed fittings.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: January 27, 1981
    Assignee: The Boeing Company
    Inventor: Richard T. De Rosa
  • Planning device
    Patent number: 4245401
    Abstract: A planning device comprising a base foil and a transparent foil hingeably connected to each other along one edge. Both the surface of the transparent foil and the surface of the base foil adjacent to the transparent foil are smooth for repeated, releasable pressure-adherence to each other. Any object having a smooth surface can be repeatedly and releasably pressure-adhered to the smooth surface of the transparent foil. The device preferably comprises a cover foil hingeably connected to the transparent foil along one edge. The surface of the cover foil adjacent to the transparent foil is preferably also smooth so that the cover foil may be repeatedly and releasably pressure-adhered to the transparent foil.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: January 20, 1981
    Inventor: Harald Riehle
  • Device for tightening an endless element trained over driving members
    Patent number: 4245518
    Abstract: A device for tightening an endless element which is trained over driving members and which is accommodated in a drive transmission housing. A regulation member is provided outside the housing for easy adjustment of the tautness or tension of the endless element.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: January 20, 1981
    Assignee: Kubota, Ltd.
    Inventors: Kazuo Toyokuni, Junji Miyata, Hiroshi Itatani, Ryozo Kuroiwa
  • Universal warning strip
    Patent number: 4245888
    Abstract: The device is designed for attaching on the rear parts of automotive vehicles and serves, especially during the night, for visual informing of drivers about the presence, the distance, the width and the length of a preceding vehicle. The device consists of light-reflecting elements, for instance, reflex foil, or of light-emitting elements, for instance, lamps. The said elements 1 arranged in two rows, one above the other, with the same spacing between the said elements, form a single module 4, and a pair of such modules arranged one above the other form a double warning-information module 5. The number of modules in a single strip /FIG. 1/ and in a double strip /FIG. 2/ depends on the width of the vehicle.
    Type: Grant
    Filed: April 18, 1979
    Date of Patent: January 20, 1981
    Assignee: Ministerstwo Komunikacji Department Komunikacji Drogowej of Ul.Chalubinskiego
    Inventor: Andrzej Wardecki
  • Vehicle equipped with two articulated trucks
    Patent number: 4245848
    Abstract: A skateboard or the like supported by two articulated steerable trucks which pivot about two non-parallel axes that are oblique with respect to the surface on which the board travels. The two pivotal axes converge to an inter-section lying below the chassis at a point lying between the two support trucks. Each of the trucks includes an articulated member holding a shaft on which wheels are mounted. In order to improve the directional stability of the skateboard, the wheel shafts of each of the two trucks lie rearward of the pivotal axes of the articulated parts of the trucks.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: January 20, 1981
    Inventor: Jean-Paul Dudouyt
  • Electronic control apparatus for a fuel injection system in internal combustion engines
    Patent number: 4245590
    Abstract: An electronic control apparatus for a fuel injection system in internal combustion engines which has a timing device for the generation of electric injection pulses, whose duration is dependent on operating characteristics and which are delivered to at least one electromagnetic injection valve which includes a time control circuit associated with the timing device in order to form at least one limiting value for the subsequent injection pulse and the subsequent injection pulse as well as the at least one limiting value can be delivered to a selector circuit so as to limit variations with respect to the duration of the injection signal thereby achieving smooth operation of the internal combustion engine.
    Type: Grant
    Filed: February 2, 1979
    Date of Patent: January 20, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Werner Grozinger, Friedrich Rabus
  • Valve actuating and control circuit
    Patent number: 4244334
    Abstract: A circuit for actuating control elements, for example a fuel shutoff valve in the carburetor of an internal combustion engine or a similar control element. The circuit is responsive to engine speed and to throttle valve position as monitored via the intake manifold vacuum. When the engine idles and the throttle is closed, the fuel control valve is held open to supply normal idling fuel or fuel mixture. However, if the engine speed rises above a threshold speed while the throttle is closed, the control circuit assumes a condition of engine braking and the fuel supply is interrupted. The switching threshold is established as the voltage on a capacitor controlling a transistor, the capacitor being charged continuously and being discharged during the occurrence of voltage spikes taken from the ignition coil of the vehicle.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: January 13, 1981
    Assignee: Robert Bosch GmbH
    Inventor: Wolfgang Maisch
  • Method and apparatus for controlling fuel management for an internal combustion engine
    Patent number: 4244340
    Abstract: A control circuit of a fuel management control system for internal combustion engines monitors the operation of an exhaust line sensor. When the oxygen sensor is perceived to be inoperative, for example, due to low ambient temperature, the previously closed loop control process governing the fuel management control signals is interrupted and a direct forward control process is substituted therefor. The reference voltage is changed during this time for eventual adaptation to the changeover to closed loop feedback control after the oxygen sensor again becomes operational.
    Type: Grant
    Filed: April 12, 1978
    Date of Patent: January 13, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Harro Herth, Hans Schnurle, Ulrich Drews, Erich Singer, Bernd Kraus, Peter Werner
  • Fuel injection system
    Patent number: 4243003
    Abstract: A fuel injection system is proposed which serves for the improved conditioning of the fuel-air mixture fed to a mixture-compressing, spark-ignited internal combustion engine. The fuel injection system comprises preferably an injection valve at the air intake pipe wherein a conditioning member, pivotable by the amount of air introduced in opposition to a resetting force, is arranged downstream of an arbitrarily operable throttle element, this pivoting action being arranged to cause a pressure drop at the conditioning member. The fuel injection takes place through an injection valve disposed in an air bypass beyond the throttle element and the conditioning member. Due to the pressure drop produced by the conditioning member, it is ensured that, in all positions of the throttle element, a constant air stream is maintained via the air bypass, which serves for conditioning the injected fuel.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: January 6, 1981
    Assignee: Robert Bosch GmbH
    Inventor: Heinrich Knapp
  • Injection pump with electronically controlled full-load stop
    Patent number: 4243004
    Abstract: An injection pump with a full-load stop, preferably electronically controlled, which is adjustable against the force of a prestressed spring as a result of the control exerted by an electromagnet with a controllable stroke and which, when there is no current in the magnet, is displaceable by means of the spring into its terminal position which determines a reduced full-load quantity. Thus the maximum injection quantity is reduced in accordance with operating conditions and with the operational status of the engine; by this means, environmentally safer and smoother engine operation is possible at all operating conditions. The injection pump is also capable of continuing to function if the electrical or electronic parts fail.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: January 6, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Ernst Ritter, Werner Faupel, Karsten Hummel, Johannes Locher
  • Method and apparatus for adjusting fuel supply to an internal combustion engine
    Patent number: 4242991
    Abstract: In order to enrich the fuel mixture fed to an internal combustion engine temporarily subsequent to engine braking, the invention proposes that engine braking is detected as the combination of a closed throttle and elevated engine speed. A detector for this condition supplies a signal to the fuel shut-off mechanism of a valve-control pulse generator. After engine braking, the counter is reset with the signal from the engine braking detector and counts engine-synchronous pulses. The counter contents are decoded and transformed into an analog signal which is used by the pulse generator for additional pulse extension to supply excess fuel to the engine for a limited period of time.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: January 6, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Scherenberg, Valerio Bianchi
  • Desk pad
    Patent number: D258293
    Type: Grant
    Filed: May 18, 1978
    Date of Patent: February 17, 1981
    Assignee: Ketcham & McDougall, Inc.
    Inventor: William Macowski