Patents by Inventor David Zawilinski

David Zawilinski 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).

  • Helical spring damper
    Patent number: 7871240
    Abstract: A damped spring assembly includes a helical spring. The helical spring is movable along an axis and has a winding direction. A damper is movable along the axis and includes a helical shape. The damper is wound in a direction opposite the winding direction. The damper applies a radial load to the spring for damping movement of the spring along the axis as the spring vibrates. The damper has a very low axial spring rate and it contributes very little to the axial load provided by the spring.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: January 18, 2011
    Assignee: Hamilton Sundstrand Corporation
    Inventors: David Zawilinski, W. Clark Dean
  • Helical spring damper
    Publication number: 20050263946
    Abstract: A damped spring assembly includes a helical spring. The helical spring is movable along an axis and has a winding direction. A damper is movable along the axis and includes a helical shape. The damper is wound in a direction opposite the winding direction. The damper applies a radial load to the spring for damping movement of the spring along the axis as the spring vibrates. The damper has a very low axial spring rate and it contributes very little to the axial load provided by the spring.
    Type: Application
    Filed: August 31, 2004
    Publication date: December 1, 2005
    Inventors: David Zawilinski, W. Dean