Patents by Inventor Alfred Thun, Jr.

Alfred Thun, Jr. 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).

  • Pipe connector for a tubular frame bicycle
    Patent number: 4728113
    Abstract: A tubing connector for a tubular frame of a bicycle comprises a plurality of hemispherical mounting pieces protruding radially exteriorly from the tubing connector. These hemispherical mounting pieces are positioned on the tubing connector so that each of the ends of the tubes of the tubing frame can be engaged on one of the mounting pieces and attached thereto for example by welding. Using hemispherical instead of cylindrical mounting pieces allows the same tubing connector to be used in many different tubing frames having different tubing diameters and tubing angles.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: March 1, 1988
    Assignee: Alfred Thun & Co. GmbH
    Inventor: Alfred Thun, Jr.