Patents by Inventor William H. Meister

William H. Meister 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).

  • Sonic pump off detector
    Patent number: 4171185
    Abstract: Pump off conditions of an oil well are determined by listening to the sonic clicks of the traveling valve and bottom hole valve. If the clicks do not occur within a certain period after top dead center for successive pump cycles, the well is assumed to be pumped off and is shut down. If, upon being restarted for a successive number of times, the valves do not click within the proper time frame it is assumed that there has been a pump failure and the well is shut down until manually restarted.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 16, 1979
    Assignee: Operational Devices, Inc.
    Inventors: Billy J. Duke, William H. Meister