Patents by Inventor Kenneth R. Stamper

Kenneth R. Stamper 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).

  • Liquid level detection
    Patent number: 5094102
    Abstract: A method and apparatus for detecting the presence of a liquid level at a monitor point along the depth of a borehole utilizes a diaphragm pressure switch for sensing the pressure of a captive air column in a measurement tube extending from the pressure switch to a predetermined point below the monitor point. In use, a rising liquid level in the borehole seals off the open lower end of the measurement tube from the earth atmosphere and allows the rising liquid level to compress the captive air column. In a preferred embodiment a visual signal is activated by the pressure switch when the rising liquid level in the borehole reaches the monitor point.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: March 10, 1992
    Assignee: Phillips Petroleum Company
    Inventors: Clayton D. Fryer, Kenneth E. Stie, Michael W. Wedel, Kenneth R. Stamper
  • Liquid level detection
    Patent number: 4972705
    Abstract: A method for detecting the presence of a liquid level at a monitor point along the depth of a borehole utilizes a diaphragm pressure switch for sensing the pressure of a captive air column in a measurement tube extending from the pressure switch to a predetermined point below the monitor point. In use a rising liquid level in the borehole seals an open lower end of the measurement tube from the earth atmosphere and allows the rising liquid level to compress the captive air column. In a preferred embodiment a visual signal is activated by the pressure switch when the liquid level in the borehole reaches the monitor point.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: November 27, 1990
    Assignee: Phillips Petroleum Company
    Inventors: Clayton D. Fryer, Kenneth E. Stie, Michael W. Wedel, Kenneth R. Stamper