Patents by Inventor Robert B. Swartz

Robert B. Swartz 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 measuring excess pore water pressure
    Patent number: 4150578
    Abstract: An elongated tubular housing has differential pressure transducers at spaced points therealong and electrically insulated therefrom by a mounting means. Each mounting means has a diaphragm exposed to pore water pressure and a diaphragm exposed to hydrostatic pressure at its location. The opposite sides of a third diaphragm are responsive to the pore water pressure and hydrostatic pressure. Conductors are provided on opposite sides of the third diaphragm to measure differential conductance which is analogous to excess pore water pressure.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: April 24, 1979
    Inventor: Robert B. Swartz