Patents by Inventor Thomas Henry Chapman

Thomas Henry 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).

  • Sorting machine with fiber optic focusing means
    Patent number: 3993899
    Abstract: A light splitter device adapted for use in a light-sensitive sorting machine comprising a multiplicity of optical fibers adjacent ends of which extend from a common surface, the opposite ends of the fibers being disposed in a plurality of separate groups of fibers which are respectively adapted to illuminate different light sensors, the fibers of each group respectively extending from regions distributed substantially uniformly throughout the said common surface.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: November 23, 1976
    Assignee: Gunson's Sortex Limited
    Inventor: Thomas Henry Chapman