Patents by Inventor Douglas C. Kruse

Douglas C. Kruse 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).

  • Internal combustion engine with limited temperature cycle
    Patent number: 6405704
    Abstract: An expandable chamber piston type internal combustion engine operating in an open thermodynamic cycle includes a combustion process having a constant volume (isochoric) phase followed by a constant temperature (isothermal) phase.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: June 18, 2002
    Assignee: Kruse Technology Partnership
    Inventor: Douglas C. Kruse
  • Internal combustion engine with limited temperature cycle
    Publication number: 20010050068
    Abstract: An expandable chamber piston type internal combustion engine operating in an open thermodynamic cycle includes a combustion process having a constant volume (isochoric) phase followed by a constant temperature (isothermal) phase.
    Type: Application
    Filed: May 8, 2000
    Publication date: December 13, 2001
    Inventor: Douglas C. Kruse
  • Adaptive emission control with communication network
    Patent number: 6112151
    Abstract: A pollution control method and apparatus devices which have two or more modes of operation in an air breathing engine. One mode of operation optimizes the constituents of engine exhaust fractions for global environmental benefits when a vehicle is operated in a clean air attainment area. A second or additional modes of operation optimize the engine exhaust fractions for ultra-low emission of ozone precursors and other air pollutants, when and where necessary to achieve local ambient air quality standards, in a clean air non-attainment area. The present invention provides methods for receiving commands over a national range and of automatically switching modes to achieve optimal performance.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: August 29, 2000
    Inventor: Douglas C. Kruse
  • Internal combustion engine with limited temperature cycle
    Patent number: 6058904
    Abstract: An expandable chamber piston type internal combustion engine operating in an open thermodynamic cycle includes a combustion process having a constant volume (isochoric) phase followed by a constant temperature (isothermal) phase.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: May 9, 2000
    Assignee: Kruse Technology Partnership
    Inventor: Douglas C. Kruse
  • Internal combustion engine with limited temperature cycle
    Patent number: 5566650
    Abstract: An expandable chamber piston type internal combustion engine operating in an open thermodynamic cycle includes a combustion process having a constant volume (isochoric) phase followed by a constant temperature (isothermal) phase.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 22, 1996
    Inventor: Douglas C. Kruse
  • Internal combustion engine with limited temperature cycle
    Patent number: 5460128
    Abstract: An expandable chamber piston type internal combustion engine operating in an open thermodynamic cycle includes a combustion process having a constant volume (isochoric) phase followed by a constant temperature (isothermal) phase.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: October 24, 1995
    Inventor: Douglas C. Kruse
  • Internal combustion engine with limited temperature cycle
    Patent number: 5265562
    Abstract: An expandable chamber piston type internal combustion engine operating in an open thermodynamic cycle includes a combustion process having a constant volume (isochoric) phase followed by a constant temperature (isothermal) phase.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: November 30, 1993
    Inventor: Douglas C. Kruse