Patents by Inventor Don J. Krzysik

Don J. Krzysik 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).

  • Dual event valve control system
    Patent number: 5655488
    Abstract: A dual event valve control system for an internal combustion engine. The system includes an inner rocker arm in engagement with a valve and with a first cam, an outer rocker arm in engagement with a second cam, and a latch member which is insertable between the rocker arms, whereupon when the rocker arms do not engage the latch member, the rocker arms are free to pivot independently of one another and the valve is actuated by the first rocker arm in accordance with the lift profile of the first cam, and when the rocker arms are engaged by the latch member, the rocker arms rotate in unison and the valve is actuated by the second rocker arm in accordance with the lift profile of the second cam. A stop acting between the inner and outer rocker arms limits relative pivoting movement between the rocker arms and is effective to provide clearance between the base circle portion of its second cam and the outer rocker arm.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: August 12, 1997
    Assignee: Eaton Corporation
    Inventors: Keith Hampton, Don J. Krzysik, Bryce A. Buuck
  • Travel limit stop for a motor driven actuator
    Patent number: 5282523
    Abstract: A motor driven actuator having a mechanical stop radially protruding from the motor output shaft which contacts the output mechanism upon reaching an extreme of travel thereby stopping the rotation of the motor by imparting a tangential stopping force thereby stopping the movement of the output mechanism while minimizing forces generated in the actuator drive mechanism.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: February 1, 1994
    Assignee: Eaton Corporation
    Inventors: Robert S. Mueller, Don J. Krzysik, Donald R. Haefner
  • Sealed camshaft phase change device
    Patent number: 4841924
    Abstract: A device (10) for varying the angular phase relation between a camshaft (12) and a crankshaft (unshown) in response to axial displacement of an advancing plate (20) drivingly connected to a support (16) via straight splines (16f) and a drive (18) via angled splines (18d). The support (16) is fixed to an end (12a) of the camshaft (12) for rotation therewith. The drive (18) is journaled on the support (16) and is driven by and in phase with the crankshaft. The advancing plate (20) is also threadably connected to a drum (36) via threads (20c,36a) and the axial displacement is effected by relative rotation between the plate (20) and the drum (36). A clockspring (24) reacting between the support (16) and drum (36) tends to rotate the drum (36) faster than the plate (20) for positioning the plate (20) in a first limit position.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: June 27, 1989
    Assignee: Eaton Corporation
    Inventors: Keith Hampton, Don J. Krzysik, Glen R. Lilley