Patents by Inventor Hans H. Dahll, V

Hans H. Dahll, V 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).

  • Patterned textured seal
    Patent number: 5195757
    Abstract: The present invention is a seal adapted to be disposed about a cylindrical shaft. The seal includes a body portion having an aperture a lip surface defining an aperture extending axially therethrough. The seal includes a textured pattern formed on the lip surface. The seal further includes at least one rib, ridge or recess extending along the lip surface for retaining a lubricant between the lip surface and the cylindrical shaft.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: March 23, 1993
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Hans H. Dahll, V