Patents by Inventor Raymond D. Campbell

Raymond D. Campbell 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).

  • Shock absorbing support post
    Patent number: 5062617
    Abstract: There is provided a new and useful shock absorbing support post for a bicycle seat comprising a tubular member having top and bottom ends, a shock absorber within the tubular member, an elongated cylindrical stem partially within and in sliding engagement with the tubular member, a first end of the stem engaging the shock absorber and a second end of the stem extending outwardly of the tubular member, a stop limiting the range of sliding movement of the stem relative to the tubular member, and a stop for maintaining a predetermined resting force between the stem and the shock absorber.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: November 5, 1991
    Assignee: Camberfield Manufacturing Limited
    Inventor: Raymond D. Campbell