Patents by Inventor Douglas Mathew Stuart

Douglas Mathew Stuart 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).

  • Combination of crank and axle in bottom bracket
    Patent number: 6899402
    Abstract: A crank includes a through hole defined in a first end thereof for receiving one of two ends of an axle in the bottom bracket, and a threaded hole defined in a second end of the crank so as to be connected with a pedal. A passage is defined through the crank and communicates with the through hole. A positioning assembly is received in the passage and includes two tubular members which are pulled toward each other by a bolt threadedly extending through the two tubular members. A concave surface is defined in each of the two tubular members so that the axle is pressed in position by the concave surfaces of the two tubular members.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: May 31, 2005
    Assignee: Tien Hsin Industries Co., LTD
    Inventors: Douglas Chiang, Douglas Mathew Stuart