Patents by Inventor Leonard Fleming

Leonard Fleming 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: 6478022
    Abstract: Self contained and transportable camp heater with a burner within a casing and a fuel tank operably connected to the burner. A stack is removably mounted on the casing and is positioned on a holder with the casing and the fuel tank after removal for transportation purposes. A regulator is operably connected to the fuel tank and, thence, to the burner. The regulator is conveniently a zero pressure regulator.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: November 12, 2002
    Assignee: International Thermal Investments Ltd.
    Inventors: Edgar C. Robinson, Leonard Fleming
  • Publication number: 20010049079
    Abstract: A powered multi-fuel burner has a burner assembly which utilizes an air aspirated nozzle and an infra-red type configuration. An air compressor provides air to the air aspirated nozzle and a fuel tank holds fuel supplied to the air aspirated nozzle by operation of the suction created at the nozzle. A metering valve is interposed between the fuel tank and the air aspirated nozzle. The metering valve is manually adjustable to increase or decrease the fuel supplied to the nozzle thereby to increase or decrease the heat output of the burner.
    Type: Application
    Filed: May 5, 1997
    Publication date: December 6, 2001
    Inventors: EDGAR C. ROBINSON, LEONARD FLEMING
  • Publication number: 20010042544
    Abstract: Self contained and transportable camp heater with a burner within a casing and a fuel tank operably connected to the burner. A stack is removably mounted on the casing and is positioned on a holder with the casing and the fuel tank after removal for transportation purposes. A regulator is operably connected to the fuel tank and, thence, to the burner. The regulator is conveniently a zero pressure regulator.
    Type: Application
    Filed: April 15, 1998
    Publication date: November 22, 2001
    Inventors: EDGAR C. ROBINSON, LEONARD FLEMING
  • Patent number: 6109912
    Abstract: A heater with a fuel vaporizer. The vaporizer has an uptube for carrying fuel and is centrally located within the burner. A cap is located over the uptube. A tubular casing forms an annulus about the uptube and communicates with the cap. Vaporizer fuel is carried upwardly in the uptube and downwardly in the annulus. A zero pressure regulator provides fuel to the burner.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 29, 2000
    Assignee: International Thermal Investments Ltd.
    Inventors: Edgar C. Robinson, Leonard Fleming
  • Patent number: 6085738
    Abstract: A burner has a burner tube and a nozzle holder mounted in one end of the burner tube. An igniter is positioned within the nozzle holder and acts to ignite any of the multi-liquid fuels which may be used with the burner. A nozzle emits atomized liquid fuel under the venturi effect of the nozzle with compressed air being supplied to the nozzle. Primary air holes extend circumferentially around the nozzle holder to admit air radially which passes directly to the burner tube. Secondary air holes extend around the inside circumference of the burner tube on the secondary air injection plate and admit air axially to the burner tube.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: July 11, 2000
    Assignee: International Thermal Investments Ltd.
    Inventors: Edgar C. Robinson, Leonard Fleming, Daniel M. Fraser
  • Patent number: 5927961
    Abstract: A powered multi-fuel burner has a burner assembly which utilizes an air aspirated nozzle. An air compressor provides air to the air aspirated nozzle and to a fuel-holding tank where the fuel within the tank is put under air pressure thereby to enhance its flow to the air aspirated nozzle. A bleed valve is positioned between the air compressor and the fuel thank thereby to increase or decrease the air pressure within the fuel tank. By increasing and decreasing the air pressure within the tank, the burner can produce heat over a range of operation.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: July 27, 1999
    Assignee: International Thermal Investments Ltd.
    Inventors: Edgar C. Robinson, Leonard Fleming
  • Patent number: 5527180
    Abstract: A burner has a burner tube and a nozzle holder mounted in one end of the burner tube. An igniter is positioned within the nozzle holder and acts to ignite any of the multi-liquid fuels which may be used with the burner. A nozzle emits atomized liquid fuel under the venturi effect of the nozzle with compressed air being supplied to the nozzle. Primary air holes extend circumferentially around the nozzle holder to admit air radially which passes directly to the burner tube. Secondary air holes extend around the inside circumference of the burner tube on the secondary air injection plate and admit air axially to the burner tube.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: June 18, 1996
    Assignee: International Thermal Investments Ltd.
    Inventors: Edgar C. Robinson, Leonard Fleming
  • Patent number: 5391075
    Abstract: A burner has a burner tube and a nozzle holder mounted in one end of the burner tube. An igniter is positioned within the nozzle holder and acts to ignite any of the multi-liquid fuels which may be used with the burner. A nozzle emits atomized liquid fuel under the venturi effect of the nozzle with compressed air being supplied to the nozzle. Primary air holes extend circumferentially around the nozzle holder to admit air radially which passes directly to the burner tube. Secondary air holes extend around the inside circumference of the burner tube on the secondary air injection plate and admit air axially to the burner tube.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: February 21, 1995
    Inventors: Edgar C. Robinson, Leonard Fleming