Patents by Inventor Mitchell J. Gillispie

Mitchell J. Gillispie 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).

  • Low emission cylinder cut-out idle system
    Patent number: 5195485
    Abstract: The invention is directed to reducing unburned hydrocarbons during engine idling. During idling, one cylinder bank of an engine is alternately deactived by fuel cut-off structure with another cylinder bank. Therefore, one bank works twice as hard and consequently produces much lower emissions. A timer alternates between the cylinder banks anywhere from fifteen seconds to four minutes.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: March 23, 1993
    Assignee: Energy Conversions, Inc.
    Inventors: Scott P. Jensen, Mitchell J. Gillispie, Robert A. McLean