Patents by Inventor Peter J. Hamstead

Peter J. Hamstead 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 determining the time taken for sound energy to cross a body of fluid in a pipe
    Patent number: 5359897
    Abstract: An apparatus for determining the time taken for sound energy to cross a body of fluid in a pipe uses a modified pipe in which flat members seal apertures in the pipe and two transducers are attached to respective fiat members, wherein the material around each aperture curves away from the centre of the pipe towards the periphery of the aperture and contacts the respective flat member along the entire periphery of the aperture.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: November 1, 1994
    Assignee: Front Engineering Ltd.
    Inventors: Peter J. Hamstead, Alan C. Smith