Patents by Inventor Stanley W. Stevenson

Stanley W. Stevenson 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: 4208123
    Abstract: Photo Graphic-Plane is a system that will facilitate the photographic process. It is a pneumatic device designed to support books and volumes at a level plane with minimum curvature of the surface while being microfilmed or photo-copied. This objective is accomplished thru air displacement from one collapsible and inflatable container under one cover of the volume thru a by-pass tube and control valve into another collapsible and inflatable container under the other cover of the volume. The result is an automatic leveling effect as pages are turned, causing an inverse shift of weight which in turn causes air displacement and the leveling process. A transparent cover is provided for the surface being photographed to enhance the leveling of the volume while reducing the surface curvature to near zero.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: June 17, 1980
    Inventor: Stanley W. Stevenson