Patents by Inventor Lyndon C. Gemmill

Lyndon C. Gemmill 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: 3986246
    Abstract: A hydraulic extractor and its use in removing damaged draft gear which are wedged in railway cars. It consists of a length of pressure resistant hose folded at its center to lie flat upon itself when empty, and having connections at both ends for receiving hydraulic fluid under pressure. Also included is an arrangement for feeding the hose into the restricted space above the draft yoke and below the draft sill. That arrangement comprises a pair of strips of sheet metal of a width generally the same as that of the flat hose, and means connecting the strips together at one end. The hose is placed between the strips, with the fold near the connecting means. A rudimentary winch is provided for connection by a cable to the metal strips where they are connected. In use, the cable is fed through the space to be expanded, and connected to the winch, and the hose in its protective metal strips is winched into the desired location.
    Type: Grant
    Filed: March 12, 1975
    Date of Patent: October 19, 1976
    Assignee: Burlington Northern Inc.
    Inventor: Lyndon C. Gemmill