Patents by Inventor Raymond L. Nelson

Raymond L. Nelson 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 and method for detecting liquid penetration by a container used for aspirating and dispensing the liquid
    Patent number: 4794085
    Abstract: Apparatus and a method are described which permit the detection of penetration of liquid by an apertured container used for aspirating and dispensing the liquid. The apparatus and method feature control means for advancing the container an increment of the maximum possible distance to the liquid; generating a pressure differential within the dispensing container that is sufficient to generate a signal that is indicative of whether the container aperture is closed by the liquid; detecting and signalling the pressure produced within the container by such a pressure differential; and comparing such signalled pressure against a reference value determinative of whether the container has penetrated the liquid.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: December 27, 1988
    Assignee: Eastman Kodak Company
    Inventors: Thomas C. Jessop, Raymond L. Nelson, Rodney J. Whitcomb