Patents by Inventor David H. Keeler

David H. Keeler 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: 7481205
    Abstract: There is provided a fuel injector system for vaporizing liquid fuel and metering the vapor to an internal combustion engine of an automobile. The system has at least one fuel injector with at least one capillary flow passage with a heat source arranged along the flow passage capable of heating liquid fuel in the flow passage to a level sufficient to vaporize it, a solenoid operated metering valve located at the capillary outlet for metering vaporized fuel to the internal combustion engine, and a system for operating the metering valve while delivering the vaporized fuel at an opening and closing frequency of at least 15 Hz or more preferably at least 60 Hz independent of engine rpm. The system is expected to be useful for starting a cold engine with reduced emissions.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: January 27, 2009
    Assignee: Philip Morris USA Inc.
    Inventors: David H. Keeler, Francis M. Sprinkel, Niranjan Maharajh, Mimmo Elia, Josh Breinlinger, Jan-Roger Linna
  • Patent number: 7400940
    Abstract: A programmable aerosol generator forms a volatilized liquid by supplying a material in liquid form to a flow passage and heating the flow passage, such that the material volatilizes and expands out of an outlet of the channel. The volatilized material, if desired, mixes with ambient air such that volatilized material condenses to form the aerosol. An apparatus and method for generating such a volatilized liquid, as well as the control and methods of heating, are disclosed as an analytical tool useful for experimental use, a tool useful for production of commercial products or an inhaler device.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: July 15, 2008
    Assignee: Philip Morris USA Inc.
    Inventors: Douglas D. McRae, John L. Felter, Clinton E. Blake, Mark T. Capps, Kenneth A. Cox, David H. Keeler, Rajiv Gupta
  • Patent number: 6766220
    Abstract: A programmable aerosol generator forms a volatilized liquid by supplying a material in liquid form to a flow passage and heating the flow passage, such that the material volatilizes and expands out of an outlet of the channel. The volatilized material, if desired, mixes with ambient air such that volatilized material condenses to form the aerosol. An apparatus and method for generating such a volatilized liquid, as well as the control and methods of heating, are disclosed as an analytical tool useful for experimental use, a tool useful for production of commercial products or an inhaler device.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 20, 2004
    Assignee: Chrysalis Technologies Incorporated
    Inventors: Douglas D. McRae, John L. Felter, Clinton E. Blake, Mark T. Capps, Kenneth A. Cox, David H. Keeler, Rajiv Gupta
  • Publication number: 20030033055
    Abstract: A programmable aerosol generator forms a volatilized liquid by supplying a material in liquid form to a flow passage and heating the flow passage, such that the material volatilizes and expands out of an outlet of the channel. The volatilized material, if desired, mixes with ambient air such that volatilized material condenses to form the aerosol. An apparatus and method for generating such a volatilized liquid, as well as the control and methods of heating, are disclosed as an analytical tool useful for experimental use, a tool useful for production of commercial products or an inhaler device.
    Type: Application
    Filed: July 29, 2002
    Publication date: February 13, 2003
    Inventors: Douglas D. McRae, John L. Felter, Clinton E. Blake, Mark T. Capps, Kenneth A. Cox, David H. Keeler, Rajiv Gupta