Patents Assigned to Diesel Research and Development Co.
  • Diesel fuel heater
    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
  • Diesel fuel heater
    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
  • Fuel heater thermostat
    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