Patents by Inventor Richard E. Chapman

Richard E. Chapman 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: 4570752
    Abstract: A foldable saw horse which may be constructed of conventional wood two-by-fours, comprising a cross beam, a first pair of foldable legs at one end of the cross beam, and a second pair of foldable legs at the other end. Each pair of foldable legs include U-shaped brackets on each leg near the upper end connected by a hinge pin, for pivoting the legs between a spread apart working position and a side-by-side intermediate folded position. Each hinge pin in turn is connected at its inward facing end to a pivot plate pivotally mounted on a second hinge pin secured to the underside of the cross bar inset from each opposite end, each second hinge pin extending in a direction perpendicular to that of each first hinge pin. Thus, when the legs of each pair have been pivoted to the intermediate folded position on each first hinge pin, they may then be pivoted on each second hinge pin to the final folded position in side-by-side relationship to the cross beam.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: February 18, 1986
    Inventors: Richard E. Chapman, Gary V. Moyer