Patents by Inventor Detmar Grunfeld

Detmar Grunfeld 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).

  • Connections for tubular bicycle frame and fork components and method of making the same
    Patent number: 4541649
    Abstract: A connection between at least one first tube and a second tube of a bicycle frame includes a flared terminus forming part of an end portion of the first tube. The flared terminus is in engagement with an outer surface of the second tube. An injection-molded one-piece plastic casing fully surrounds the end portion of the first tube and fully surrounds a circumferential portion of the outer surface of the second tube in a zone of the flared terminus.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: September 17, 1985
    Inventor: Detmar Grunfeld