Patents by Inventor Leonard Richard Thomas Tyley

Leonard Richard Thomas Tyley 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).

  • Devices for evaluating drop systems
    Patent number: 3992103
    Abstract: Apparatus for the analysis of a system of dispersed particulate matter, such as a spray of liquid drops, in which the shadows of the particles are received as a two-dimensional image on a shadow receptor, and the particles lying within a focal plane within the system are focused in a two-dimensional image on to an image receptor, particles not in the focal plane being out-of-focus at the image receptor by a degree dependent on distance from the plane, so that selection of images having a degree of focus greater than a predetermined degree, and therefore having an intensity greater than a predetermined level, allows the analysis of only particles within a known distance of the focal plane.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: November 16, 1976
    Assignee: National Research Development Corporation
    Inventors: Leonard Richard Thomas Tyley, Henry Sawistowski, Malcolm James Dix