Patents by Inventor John P. Sargeant

John P. Sargeant 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).

  • Method and apparatus for measuring the quantity of particulate material in a fluid stream
    Patent number: 5211677
    Abstract: Particles in a fluid stream are detected by utilizing one or more probes each provided with at least one measuring or erosion element. The probe is placed in the fluid stream, and the particle content is quantitatively determined by measuring changes of electrical resistance as a function of erosion of the measuring element due to contact with particles moving in the stream. The probe may be equipped with a measuring head having a V-shaped configuration directed upstream, and the two planar surfaces defining the V-shape may each be equipped with one or more measuring elements.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: May 18, 1993
    Assignee: Norsk Hydro a.s.
    Inventors: John P. Sargeant, Terje Sontvedt, Tom Solberg