Patents by Inventor Joseph E. Vandervier

Joseph E. Vandervier 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).

  • Downhole pressure and temperature monitoring system
    Patent number: 4803483
    Abstract: An apparatus and method for monitoring the temperature and pressure in a well bore is used in connection with a submersible pump disposed in the well bore and electrically energized by a power conductor suspended in the well bore. A plurality of resistors and a plurality of pressure sensitive switches are disposed in the well bore along with a temperature sensitive circuit element. A constant current source at the surface provides a dc sensing signal that is superimposed on the power cable. A single voltage reading taken at the surface provides a measure of both temperature and pressure in the well bore.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: February 7, 1989
    Assignee: Hughes Tool Company
    Inventors: Joseph E. Vandervier, Clinton A. Boyd