Patents by Inventor Douglas David Cantrell

Douglas David Cantrell 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).

  • Charge motion control valve in upper intake manifold
    Patent number: 6155229
    Abstract: An internal combustion engine with charge stratification and directed air flow is provided. A charge motion control valve is positioned in the upper intake manifold and bifurcated intake ports are utilized in the cylinder head which direct the air flow into one intake port when desired. This provides improved engine performance, emissions, and fuel economy with easier packaging and consequently reduced cost.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: December 5, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Douglas David Cantrell, Jr., Darice Marie Morris, Mark Allen Bourcier, Keith Daniel Miazgowicz, Michael Bruno Magnan, Patrick Joseph Crowley, Rebecca Frayne Speckhals, Theodore Thomas Geftos
  • Internal combustion engine with offset intake valve seat for improved intake charge motion
    Patent number: 6089203
    Abstract: A reciprocating internal combustion engine uses intake valve seats which are offset from the intake port center lines such that charge motion of the inlet charge will be increased without the need for a charge motion control valve, and without causing a loss of volumetric efficiency of the engine.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: July 18, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Douglas David Cantrell, Mark Allen Bourcier, Keith Daniel Miazgowicz, Michael Bruno Magnan, Rebecca Lynne Frayne
  • Camshaft lash adjustment process and system for internal combustion engine
    Patent number: 6024063
    Abstract: A camshaft lash adjustment process for an internal combustion engine includes the steps of substituting a tiltable camshaft retainer for a camshaft bearing cap which is proximate a driven end of the camshaft, followed by removal of all remaining camshaft bearing caps and the substitution of a camshaft tilt limiter for one of the camshaft bearing caps so as to allow rotation of the camshaft to a tilted position. This permits adjustment of valve tappets driven by the camshaft.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: February 15, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Doreen Jeanette Muter, William Charles Ronzi, Douglas David Cantrell, Jr., Thomas Patrick Durfee, Thomas Kenneth Wagel