Patents by Inventor Joel R. Hartman

Joel R. Hartman 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).

  • Bicycle drop-out and method of attachment
    Patent number: 5025977
    Abstract: A metal drop-out is attached to a receiving tube of a bicycle frame. The drop-out includes a slotted axle-retaining section and a mounting section which is of one-piece integral construction with the axle-retaining section. The mounting section is bent relative to the axle-retaining section along a transverse band region by an angle by about 10 to 90 degrees. An end edge of the mounting section is machined to a generally cylindrical configuration defining a first longitudinal axis. The machined end edge of the mounting section is inserted into an end of a receiving tube and is welded thereto.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: June 25, 1991
    Assignee: Sandvik Special Metals Corporation
    Inventor: Joel R. Hartman