Patents by Inventor Lawrence V. Whistler, III

Lawrence V. Whistler, III 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).

  • Patent number: 5356252
    Abstract: A unitized expanding dowel is disclosed for accurately and repeatably locating a part having a through hole relative to a reference part having a hole of like size. The dowel includes a radially expandable, resiliently deformable cylindrical sleeve having an axial passage therethrough. A portion of the passage is frusto-conically shaped to complement a tapered expansion pin movable within the axial passage in a first axial direction to force the outer surface of the sleeve to radially expand into tight surface engagement with inner surfaces of the holes. Coupling means connect the sleeve to the expansion pin and permit movement of the pin in an opposite direction to allow contraction of the sleeve away from tight engagement with the holes while preventing withdrawal of the pin from the sleeve passage.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: October 18, 1994
    Assignee: S.B. Whistler & Sons, Inc.
    Inventors: Lawrence V. Whistler, III, Raymond J. Hutten