Patents by Inventor Dwayne A. Chesnut

Dwayne A. Chesnut 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).

  • Patent number: 5372391
    Abstract: An attachment mechanism for repairing or extending fluid carrying pipes, casings, conduits, etc. utilizing one-way motion of spring tempered fingers to provide a mechanical connection between the attachment mechanism and the pipe. The spring tempered fingers flex to permit insertion into a pipe to a desired insertion depth. The mechanical connection is accomplished by reversing the insertion motion and the mechanical leverage in the fingers forces them outwardly against the inner wall of the pipe. A seal is generated by crushing a sealing assembly by the action of setting the mechanical connection.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: December 13, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Richard M. Bast, Dwayne A. Chesnut, Carl D. Henning, Joseph P. Lennon, John W. Pastrnak, Joseph A. Smith
  • Patent number: 5346307
    Abstract: A method is provided for measuring subsurface soil or rock temperatures remotely using electrical resistivity tomography (ERT). Electrical resistivity measurements are made using electrodes implanted in boreholes driven into the soil and/or at the ground surface. The measurements are repeated as some process changes the temperatures of the soil mass/rock mass. Tomographs of electrical resistivity are calculated based on the measurements using Poisson's equation. Changes in the soil/rock resistivity can be related to changes in soil/rock temperatures when: (1) the electrical conductivity of the fluid trapped in the soil's pore space is low, (2) the soil/rock has a high cation exchange capacity and (3) the temperature changes are sufficiently high. When these three conditions exist the resistivity changes observed in the ERT tomographs can be directly attributed to changes in soil/rock temperatures. This method provides a way of mapping temperature changes in subsurface soils remotely.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: September 13, 1994
    Assignee: Regents of the University of California
    Inventors: Abelardo L. Ramirez, Dwayne A. Chesnut, William D. Daily
  • Patent number: 5191940
    Abstract: An oil/gas separator is disclosed that can be utilized to return the burning wells in Kuwait to production. Advantageously, a crane is used to install the separator at a safe distance from the well. The gas from the well is burned off at the site, and the oil is immediately pumped into Kuwait's oil gathering system. Diverters inside the separator prevent the oil jet coming out of the well from reaching the top vents where the gas is burned. The oil falls back down, and is pumped from an annular oil catcher at the bottom of the separator, or from the concrete cellar surrounding the well.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: March 9, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Carol T. Alonso, Donald A. Bender, Barry R. Bowman, Alan K. Burnham, Dwayne A. Chesnut, William J. Comfort, III, Lloyd G. Guymon, Carl D. Henning, Knud B. Pedersen, Joseph A. Sefcik, Joseph A. Smith, Mark S. Strauch