Patents by Inventor Dennis A. Ray

Dennis A. Ray has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4979483
    Abstract: A diesel fuel heater for heating diesel fuel prior to its introduction into the diesel engine wherein said fuel heater comprises top and bottom covers and an elongate annular section. The fuel heater of the present invention heats the fuel by passing engine coolant across fuel carrying fuel tubes located in the heat transfer chamber.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: December 25, 1990
    Assignee: Diesel Research and Development Co.
    Inventor: Dennis A. Ray
  • Patent number: 4971018
    Abstract: A diesel fuel heater for heating diesel fuel prior to its introduction into the diesel engine wherein said fuel heater comprises top and bottom covers and an elongate annular section. The fuel heater of the present invention heats the fuel by passing engine coolant across fuel carrying fuel tubes located in the heat transfer chamber.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: November 20, 1990
    Assignee: Diesel Research and Development Co.
    Inventor: Dennis A. Ray
  • Patent number: 4846137
    Abstract: A fuel heating device for an automatic engine including a heat exchanger heating the gasoline from the supply tank before directing the gasoline into the carburetor and utilizing heat from the engine coolant system, the vapor pressure of the heated gasoline being monitored for regulating the flow of engine coolant.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: July 11, 1989
    Inventor: Dennis A. Ray
  • Patent number: 4829969
    Abstract: A fuel heating device for internal combustion engines using engine coolant to heat the fuel prior to the introduction of the fuel into the carburetor and utilizing a spiral distributor to evenly heat the fuel and eliminate vapor lock. The spiral distributor provides a means for spiraling the fuel through a heat transfer chamber to evenly heat the fuel and decrease the amount of vaporized fuel created by heating the fuel.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: May 16, 1989
    Assignee: Energy Research and Marketing Corporation
    Inventor: Dennis A. Ray
  • Patent number: 4827889
    Abstract: A manually adjustable thermostat for use in fuel heaters wherein the fuel is heated by engine coolant, with the thermostat including a moveable piston therein to restrict the flow of coolant through the fuel heater in response to changes in the temperature of the heated fuel and having an adjusting screw for manually adjusting the position of the piston to manually adjust the flow of coolant through the fuel heater.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: May 9, 1989
    Assignee: Diesel Research and Development Co.
    Inventor: Dennis A. Ray
  • Patent number: 4367717
    Abstract: Gasoline treating apparatus for an automotive engine including a modulating heat exchanger heating the gasoline from the supply tank before directing the gasoline into the carburetor and utilizing heat from the engine coolant, the temperature of the heated gasoline being sensed for regulating the flow of the engine coolant; and an additional heater for the gasoline in the air-fuel mixture and obtaining heat for the additional heating from the engine coolant.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: January 11, 1983
    Assignee: Northwest Investments
    Inventor: Dennis A. Ray
  • Patent number: 4300513
    Abstract: A plate mounted between the carburetor and intake manifold having horizontally extending passageways and inlet and outlet ports communicating with four vertical apertures aligned with the passageways of the carburetor and intake manifold. Double-walled tubular heat exchangers, formed of spaced apart outer and inner jackets, are disposed in the vertical apertures, the spaces between the outer and inner jackets communicating with the plate passageways and being sealed from the inside of the inner jackets, such that engine coolant can be circulated through such spaces and through the plate to cause preheating of the fuel-air mixture as it passes through the inside of the exchangers and into the intake manifold. The inner periphery of each inner jacket has ring shaped serrations and a downward taper, which together with preheating by the heat exchangers results in significantly improved vaporization of the fuel-air mixture.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: November 17, 1981
    Inventor: Dennis A. Ray