Patents by Inventor Douglas Hauff

Douglas Hauff 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).

  • Cleaning apparatus for dispensing a heated cleaning fluid
    Patent number: 7171721
    Abstract: A cleaning apparatus is disclosed and which includes a fluid dispensing tank which dispenses a cleaning fluid; a heat exchanger coupled in downstream fluid flowing relation relative to the fluid dispensing tank; a source of a combustible fluid fuel; a source of air; and a catalytic heater positioned in heat transferring relation relative to the heat exchanger, and which further is coupled in fluid flowing relation relative to the combustible fluid fuel, and wherein the catalytic heater catalytically combusts a substantially nonflammable mixture of the combustible fluid fuel and air to produce heat energy which heats the fluid dispensed from the fluid dispensing tank.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: February 6, 2007
    Assignee: Palouse Holdings, LLC
    Inventors: Douglas Hauff, Steve Williams, William A. Fuglevand, Greg A. Lloyd
  • Cleaning apparatus
    Publication number: 20050055793
    Abstract: A cleaning apparatus is disclosed and which includes a fluid dispensing tank which dispenses a cleaning fluid; a heat exchanger coupled in downstream fluid flowing relation relative to the fluid dispensing tank; a source of a combustible fluid fuel; a source of air; and a catalytic heater positioned in heat transferring relation relative to the heat exchanger, and which further is coupled in fluid flowing relation relative to the combustible fluid fuel, and wherein the catalytic heater catalytically combusts a substantially nonflammable mixture of the combustible fluid fuel and air to produce heat energy which heats the fluid dispensed from the fluid dispensing tank.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 17, 2005
    Inventors: Douglas Hauff, Steve Williams, William Fuglevand, Greg Lloyd