Patents by Inventor Gordon Ramsden

Gordon Ramsden 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).

  • Work presence controller
    Patent number: 4637289
    Abstract: A saw wherein an arbor is mounted to drive a circular saw blade from below a flat work surface upward through a slot in the work surface to sever any work piece suitably disposed on the work surface. A guard/clamp above the work surface is lowered to engage and clamp each such work piece on the work surface before the saw blade begins its ascent. A sensor is mounted on the guard/clamp to sense the presence of a work piece at a location immediately on the work piece feed side of the saw blade and adjacent a saw fence. The sensor prevents operation of the saw when the sensor fails to establish the presence of a work piece on the work surface.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: January 20, 1987
    Assignee: Whirlwind, Inc.
    Inventor: Gordon Ramsden