Patents by Inventor Leonard R. Burks

Leonard R. Burks 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).

  • Flame spray gun
    Patent number: 5297733
    Abstract: A flame spray gun comprising a trigger-operated valve for selectively controlling the flow of conveying air to an eductor disposed in the powder flow nozzle, thereby providing the operator with substantially instantaneous control over the powder feed rate through the gun.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: March 29, 1994
    Assignee: Plastic Flamecoat Systems, Inc.
    Inventors: Leonard R. Burks, Mark T. Dobek
  • Fluidized powder feed system with pressurized hopper
    Patent number: 5269463
    Abstract: A feed system for flame spray guns is provided that comprises a hopper with a powder storage chamber, a pressurized gas source separated from the powder storage chamber by a gas distributor board, at least one flow line providing fluid communication for the pressurized air and entrained powder between the storage chamber and a flame spray gun, a powder outlet valve on each flow line for controlling the flow of pressurized gas and entrained powder from the storage chamber into the flow line, and a purge line delivering pressurized gas to the flow line downstream of the powder outlet valve for clearing powder from the flow line after the valve is closed.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: December 14, 1993
    Assignee: Plastic Flamecoat Systems, Inc.
    Inventor: Leonard R. Burks