Patents by Inventor Keith Graydon

Keith Graydon 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).

  • Apparatus for measurement of particle or droplet velocity
    Patent number: 6624434
    Abstract: An apparatus for measuring the velocity of a droplet of a liquid includes a laser to generating a beam of light and projecting the beam along a first path. A lens is along the first path for forming the beam into the shape of a thin sheet. A beam divider is along the first path for dividing the beam into two separate beams which extend along second and third paths. The second and third paths lie in a common plane. Along the second and third paths is means for projecting a droplet of liquid across the second and third paths so that the droplet passes through both of the divided beams. AT least one photodetector is along the second and third paths to receive the divided beams and provide an electrical signal corresponding to the beams.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: September 23, 2003
    Assignee: Sarnoff Corporation
    Inventors: Zilan Shen, Hyoun Park, Keith Graydon