Patents Examined by Clarence R. Gordon
  • Patent number: 4058088
    Abstract: An oscillating piston engine capable of running on a working fluid such as steam or compressed air comprises a bank of cylinders mounted for rotation in unison to turn a shaft in an engine block, pistons mounted for oscillation in the cylinders and rotatable in unison relative to the cylinders to turn another shaft in the engine block, control means operable in response to rotation of the cylinders for supplying and exhausting working fluid to and from opposite ends of the cylinders in alternating timed relation to cause the pistons to oscillate in the cylinders and pistons, and gearing means connecting the piston shaft and the cylinder shaft to an output shaft for converting the oscillating motion of the pistons and cylinders into unidirectional rotation of the output shaft.
    Type: Grant
    Filed: August 11, 1976
    Date of Patent: November 15, 1977
    Inventor: Jesse C. Brown
  • Patent number: 4057960
    Abstract: A control system for gas turbines with a gas generator which comprises a compressor, a combustion chamber, and a compressor turbine, with a power take-off device and a thrust device arranged past said gas generator and adjustable as to through-put preferably in the form of an efficiency turbine provided with an adjustale guide wheel, with a thrust nozzle variable with regard to its cross section or with an adjustable propeller, and with a fuel metering valve the metering cross section of which in influenced by values of condition of state of the gas generator. As values of condition of state for the adjustment of the fuel metering valve there are selected the temperature at the entrance into the combustion chamber or at the exit of the compressor, or the pressure in front of the compressor turbine, or a setting member of a speed governor of the gas generator which adjusting member is adapted to be influenced at will.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: November 15, 1977
    Assignee: Klockner-Humboldt-Deutz Aktiengesellschaft
    Inventor: Reinhold Werner
  • Patent number: 4057039
    Abstract: An engine having valve means, timing means, fuel distribution means and ignition means configured for operation on a combustible mixture of fuel and air, or other energy source, comprises at least one annular cylinder and mating annular piston forming combustion chambers at both ends and configured for orbital rotation about a central crank. Escapement means transfers orbital rotation of the piston and cylinder in a first direction to the crank and prevents their rotation in the opposite direction relative to the grounded frame which encloses the engine. The piston and cylinder alternately are rotated in the first direction by expansion or contraction of the energy source in successively predetermined combustion chambers on each stroke to rotate the crank.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: November 8, 1977
    Inventor: Adolf P. Pinto
  • Patent number: 4052843
    Abstract: Apparatus for preventing surging of a gas turbine especially for a motor car. According to one embodiment of this invention, the apparatus is provided with its main information which is composed of the differential pressure .DELTA.P between the air immediately inwardly of the air filter of the gas turbine and the air at the compressor inlet. When the differential pressure .DELTA.P reaches approximately the critical value .DELTA.Ps at which surging occurs at each number N of rpm of the gas turbine, i.e., (.DELTA.P - .DELTA.Ps) is almost 0, fuel control means are operative to control the fuel supply to the gas turbine, thereby preventing surging. According to another embodiment, the apparatus is provided with its main information for preventing surging of the gas turbine from the ratio of the differential pressure .DELTA.P between the pressure PIN of the air immediately inwardly of the air filter and the air pressure at the inlet of the compressor to PIN, i.e., .DELTA.P/PIN. When .DELTA.
    Type: Grant
    Filed: September 23, 1975
    Date of Patent: October 11, 1977
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventor: Masaaki Takizawa
  • Patent number: 4051669
    Abstract: A gas turbine power plant is provided with an industrial gas turbine which drives a generator coupled to a power system through a breaker. The turbine-generator plant is operated by a hybrid control system having digital function capability during sequenced startup, synchronizing, load buildup and steady state load, and shutdown operations. The control system also contains monitoring and protective subsystems which function through all stages of operation, with redundancy and permissive features which maximize turbine availability.
    Type: Grant
    Filed: December 3, 1974
    Date of Patent: October 4, 1977
    Assignee: Westinghouse Electric Corporation
    Inventors: Robert A. Yannone, James J. Shields
  • Patent number: 4051819
    Abstract: A rotary-block engine is provided with an eccentrically mounted cylinder block about the main drive shaft. The radial cylinders of the cylinder block each contain a reciprocating piston which is also eccentrically mounted about a secondary shaft, so that a point on the piston traces a path in the form of a hypotrochoid while a point on the cylinder block traces a path in the form of an epitrochoid. The secondary shafts are held in place relative to the main shaft by projections engaging in grooves of the side walls of the stationary housing, or alternatively by holders rotatably mounted about the main shaft.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: October 4, 1977
    Inventor: Sten Henstrom
  • Patent number: 4047381
    Abstract: Gas turbine engine power plants sometimes are provided with thrust reversing equipment, the outlet of which is close to the power plant air intake. Such arrangements create re-ingestion problems. There is described herein an apparatus which either maintains the upstream portion of reversed flow in a given position with respect to the plane of the air intake or alternatively destroys the reversed flow entirely.
    Type: Grant
    Filed: September 21, 1976
    Date of Patent: September 13, 1977
    Assignee: Rolls-Royce (1971) Limited
    Inventor: Thomas Eric Smith
  • Patent number: 4046116
    Abstract: My invention relates to means for and methods of increasing the compression ratio of the cylinders of an overhead valve engine. The means comprises a small plate of metal which is attached to the top face of the piston head. The plates are provided in various sizes so that one size may be selected to increase the compression ratio a predetermined amount.The method comprises removal of the engine head with the overhead valves carried thereby, and the rotation of the crankshaft to bring the pistons in any desired order to substantially top dead center, and to attach the compression-increasing plate to the top face of a piston while it is at top dead center.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: September 6, 1977
    Inventor: William E. Burnham
  • Patent number: 4046025
    Abstract: A bicycle speed change lever device is combined with a fixing band having a pair of expandable open ends, wherein at least one inside nut holding means is formed with the open ends of the fixing band for supporting an inside nut. A cup member is mounted to the fixing band so as to receive the inside nut holding means in order to eliminate external projections with the fixing band. A lever handle is movably mounted on the cup member and a threaded shank passes through the cup member and the lever handle in engagement at its inner end with the inside nut.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: September 6, 1977
    Assignee: Maeda Industries, Ltd.
    Inventor: Nobuo Ozaki
  • Patent number: 4045955
    Abstract: Apparatus for controlling the flow of fuel supplied via a regulating valve to a gas turbine plant having a compressed-gas generating unit and a power turbine which is driven by the gas from the generating unit. The function of the controlling apparatus is to reduce or cut off the supply of fuel in the event of an overspeed condition of the power turbine. The apparatus includes a first means which is responsive to the angular velocity of a rotor in the power turbine, and a second means which is responsive to the angular acceleration of such rotor. The control means is jointly responsive to the output signals provided by the first and second means so as to control the valve and reduce the rotor's angular velocity when the output signals provided by both the first and second means concurrently exceed predetermined values.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: September 6, 1977
    Assignee: Stal-Laval Turbin AB
    Inventors: Roine Brannstrom, Goran Nilsson
  • Patent number: 4044554
    Abstract: An electronic circuit is used to control a gas turbine engine primarily as a function of turbine inlet temperature and compressor speed and in particular includes a speed governing loop to control compressor speed according to throttle position and modified by a temperature limiting compensation loop which accurately sets the turbine inlet temperature limit according to a schedule which avoids engine surge and destructive temperatures. The compensation loop is particularly designed to provide quick response to acceleration demands and a smooth transition to temperature limiting. A start fuel schedule circuit is also used to moderate the speed loop during engine starting.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: August 30, 1977
    Assignee: General Motors Corporation
    Inventor: Gene A. West
  • Patent number: 4044549
    Abstract: A process for forming low-emission combustion gases. A lean mixture of fuel and air provides a substantially homogeneous mixture within the combustion zone. The fuel is preferably vaporized and, alternatively, may be introduced into the burner as microscopic droplets. Combustion temperature is maintained below about 3, F. to reduce nitrogen oxides and combustion is conducted under stable conditions which sufficiently exceed lean blowout to reduce formation of carbon monoxide and unburned hydrocarbons. The flow velocity into the burner is higher than the turbulent flame velocity.A dilution zone may be provided downstream from the combustion zone. To control performance, input air may be split into a first stream to the combustion zone and a second stream to the dilution zone. A quantity of water may be admixed with the fuel and be prevaporized to form water vapor containing fuel droplets.A method of operating a gas turbine with a burner operated as above, generating combustion gases to the turbine.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: August 30, 1977
    Inventor: Eugene B. Zwick
  • Patent number: 4044553
    Abstract: A combustor for a gas turbine engine has a prevaporization chamber wall having a plurality of air passages therethrough and wherein a variable geometry air flow control element is located in overlying relationship with the air passages to control air flow therethrough. A fuel injector is located concentrically within the chamber for supplying fuel for combustion with air supplied thereto and a hydraulic control actuator is located in surrounding relationship with the injector immediately outboard of the chamber including the hydraulic actuator having pressure supplied thereto from the fuel flow through the nozzle and including means for coupling the actuator directly to the control element for increasing primary air flow in accordance with increased fuel flow to the prevaporization chamber.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: August 30, 1977
    Assignee: General Motors Corporation
    Inventor: John M. Vaught
  • Patent number: 4041695
    Abstract: A pneumatic purge system retrofittable upon existing gas turbine engines which includes an accumulator for storing pressurized gas at the maximum pressure developed by the compressor of the turbine engine. Upon actuating a solenoid fuel shutoff valve to initiate engine shutdown, stored gas from the accumulator flows into the fuel manifold to purge fuel therefrom into the combustion chamber. Timing of the pneumatic purging sustains the combustion process to burn substantially all the purged fuel.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: August 16, 1977
    Assignee: The Garrett Corporation
    Inventors: John Everett Harper, Louis H. Kell
  • Patent number: 4041694
    Abstract: In order to maintain local flame temperatures in a gas turbine engine combustor lower than F. to prevent excessive formation of nitrogen oxides and above F. to prevent excessive carbon monoxide formation and flameout, it is desirable to measure the flame temperature at a number of points within the combustor. Appropriate volumes of cool air entering the burner and hot gas in the flame vicinity are withdrawn and mixed to produce a gas mixture at a temperature low enough to be measured by conventional means such as thermocouples. The volume of each gas withdrawn is controlled by flow through a choked orifice. The pressure differential between the combustor pressure and ambient pressure is used to choke the flow control orifices.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: August 16, 1977
    Assignee: United Technologies Corporation
    Inventor: George D. Lewis
  • Patent number: 4041697
    Abstract: A gas turbine engine fuel delivery and control system is provided with means to recirculate all fuel in excess of fuel control requirements back to the aircraft fuel tank, thereby increasing the fuel pump heat sink and decreasing the pump temperature rise without the addition of valving other than that normally employed. A fuel/oil heat exchanger and associated circuitry is provided to maintain the hot engine oil in heat exchange relationship with the cool engine fuel. Where anti-icing of the fuel filter is required, means are provided to maintain the fuel temperature entering the filter at or above a minimum level to prevent freezing thereof. In one embodiment, a divider valve is provided to take all excess fuel from either upstream or downstream of the fuel filter and route it back to the tanks, the ratio of upstream to downstream extraction being a function of fuel pump discharge pressure.
    Type: Grant
    Filed: July 17, 1975
    Date of Patent: August 16, 1977
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: George A. Coffinberry, Howard B. Kast
  • Patent number: 4040250
    Abstract: An electronic gas turbine fuel control of the slave datum type, i.e. one including a circuit which generates a speed error signal, an electronic integrator which integrates that error signal to produce a speed datum signal and a difference amplifier comparing the speed datum signal with the actual engine speed to produce a fuel error signal, incorporates a surge detection and recovery circuit. For detection the rate of change of the fuel error signal is derived and compared with a reference value varying with engine conditions. For recovery, if the rate of change exceeds the reference value for a predetermined time during acceleration, the speed error signal is caused to go negative for a fixed period to ramp the integrator output downwards, after which acceleration is allowed to recommence.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: August 9, 1977
    Assignee: Lucas Industries Limited
    Inventors: Arthur Frank Saunders, Graham John Hindmarsh
  • Patent number: 4040398
    Abstract: Apparatus for four-cycle rotary engine operation includes a cylinder block rotatable about a first axis and having six cylinders uniformly spaced and radially arranged about the axis, a set of six pistons rotatable about a second axis which is offset from and parallel with the first mentioned axis, each piston being disposed to move in a different one of the cylinders, and a valve system for introducing fuel charges into and exhausting combustion products from the cylinders. A crankshaft extends within the cylinder block and is coupled to the pistons to rotate as the cylinder block rotates and as the pistons move in their respective cylinders. The fuel charges are successively fired in alternate pairs of adjacent cylinders to cause the cylinder unit and crankshaft to rotate in a smooth and efficient manner.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: August 9, 1977
    Assignee: Engine Research
    Inventors: Roger Evan Billings, Franklin Earl Lynch
  • Patent number: 4038949
    Abstract: A rotary-radial internal combustion engine wherein a piston-containing cylinder housing and cam means are mounted in an engine housing for relative rotary motion with respect to each other; said cylinder housing including diametrically opposite combustion chambers having mounted for reciprocation therein rigidly linked pistons provided with cam follower means engaging said cam means; said engine housing being provided with fuel intake means for feeding pressurized fuel to said combustion chambers, means for firing said fuel in said combustion chambers, and burnt fuel scavenging means for exhausting burnt fuel from said combustion chambers; the combination of said relative rotary motion between said cylinder housing and said cam means, and said reciprocatory motion of said pistons, producing per engine revolution piston thrusts numerically greater than the number of combustion chambers in said cylinder housing; said piston thrusts being translated into torque which is applied to an engine drive shaft.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: August 2, 1977
    Inventor: Victor W. Farris
  • Patent number: 4037404
    Abstract: A gas turbine engine of the type comprising a compressor and an expansion rbine of which the respective rotors are mutually joined together in rotation and in axial traction by a main coupling device. The engine includes, in addition, a safety coupling device joining together these two rotors only in axial traction but allowing them to turn one with respect to the other in case of accidental fracture of the main coupling device.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: July 26, 1977
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation
    Inventor: Georges Bougain