Patents by Inventor Philip J. Houtz

Philip J. Houtz 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).

  • Compression brake system for an internal combustion engine
    Patent number: 6701888
    Abstract: Improving compression brake systems (10) require better control of timing an actuation event. Numerous systems use complicated electronic controls to achieve such control. Cam actuated compression brake systems may reduce braking power by allowing a valve 32 on an internal combustion engine (30) to remain open well after an optimum crank angle. Using a by-pass port (42), pressure may be increased in a second actuator volume (22) opposite a first actuator volume (20). Increasing pressures in the second actuator volume (22) promotes closing the valve (26) near the optimum crank angle.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: March 9, 2004
    Assignee: Caterpillar Inc
    Inventor: Philip J. Houtz