Patents by Inventor Monty E. McElroy

Monty E. McElroy 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).

  • Capacitive differential pressure sensor and method of measuring differential pressure at an oil or gas well
    Patent number: 5357806
    Abstract: A capacitive differential pressure sensor comprises two end pieces and a central diaphragm all of the same type of electrically non-conductive material, such as quartz. As the central diaphragm moves relative to the end pieces in response to pressures applied through the end pieces, capacitance changes are sensed through one pair of facing electrodes on one end piece and the diaphragm and another pair of facing electrodes on the other end piece and the diaphragm. A method of measuring differential pressures at an oil or gas well with such a sensor is also disclosed.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: October 25, 1994
    Assignee: Halliburton Company
    Inventors: John R. Dennis, Steven L. Cook, Monty E. McElroy, Charles D. Totty