Patents by Inventor Christopher F. Flippance

Christopher F. Flippance 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).

  • Retarders suitable for wagon speed control and having means for holding them in their operative condition
    Patent number: 4535872
    Abstract: A retarder, suitable for reducing the speed of a wagon rolling along a railway track, includes a retainer, which is adapted to be secured upon or adjacent a rail of the track, and an hydraulic unit which is fitted in the retainer. A portion of the unit normally projects from the retainer thus to lie in the path of a wheel of the wagon so as to be engageable by that wheel. The portion is movable inwardly of the retainer to a position, out of the path, in which it permits the wheel to pass the retarder. The retarder includes holding mechanism for maintaining the portion in that position.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: August 20, 1985
    Assignee: Dowty Hydraulic Units Limited
    Inventors: David E. Bick, Christopher F. Flippance, Ian C. Parry