Patents by Inventor Jeffrey C. Bergren

Jeffrey C. Bergren 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: 4915560
    Abstract: A threaded fastener for preventing cross threading comprises a head, a cylindrical threaded shank projecting from the head, and a tip section formed on the end of the shank opposite the head. The tip section has a generally circular cross-section and has at least one and preferably two partial threads formed on it. The tip section may be generally cylindrical, conical, frusto-conical or bullet shaped. A method of manufacturing an anti cross thread fastener comprises forming a fastener blank with a shank portion joined to a tip section having a tip threading side and a reduced radius side, and applying threads thereto.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: April 10, 1990
    Assignee: Buell Industrial, Inc.
    Inventors: Francis C. Peterson, Jeffrey C. Bergren