Patents by Inventor Matthew S. Sprankle

Matthew S. Sprankle 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).

  • Tolerance ring with high axial static friction
    Patent number: 7611303
    Abstract: A tolerance ring for applications requiring high axial static friction has contacting portions having a novel profile. The use of multiple contacting portions having a smaller size that are wedge-shaped increases rigidity and provides a directional grip that increases axial static function. Using multiple wedge-shaped contacting portions with appropriate opposite slants provides a balanced and symmetrical grip. Using inter-level wedge-shaped contacting portions with opposite slants provides a more aggressive grip while providing a tolerance ring that is more dynamically stable and has a high resonant frequency.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: November 3, 2009
    Assignee: Intri-Plex Technologies, Inc.
    Inventors: Kevin P. Hanrahan, David D. Dexter, Ryan J. Schmidt, Matthew S. Sprankle
  • Snap ring with recessed interior contour
    Patent number: 7507063
    Abstract: A snap ring for applications requiring cleanliness has a novel recessed interior contour that reduces debris generation during installation of the snap ring. The snap ring is suitable for applications where a reduction in debris generation is desirable, such as to retain an actuator pivot bearing in information storage devices like magnetic hard disk drives.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: March 24, 2009
    Assignee: Intri-Plex Technologies, Inc.
    Inventors: David Django Dexter, Damon Douglas Brink, Ryan John Schmidt, Matthew S. Sprankle, Kevin Patrick Hanrahan