Patents by Inventor Henry J. Langlois

Henry J. Langlois 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).

  • Control apparatus and method for an oil-well pump assembly
    Patent number: 4390321
    Abstract: Control apparatus and method for reducing oil-well pounding and preventing subsequent damage to a producing oil well and an oil-well pump assembly, while maintaining optimum oil-well productivity is disclosed. The control apparatus includes vibration-sensor means operatively coupled to an oil-well pump assembly to detect shock pulses generated by the down-hole pump assembly of the oil well, and including means for transmitting the sensed pulses as equivalent electrical signals to a control means for determining the magnitude and frequency of the vibrations or shock pulses received from the sensor means.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: June 28, 1983
    Assignee: American Davidson, Inc.
    Inventors: Henry J. Langlois, Dean W. Hart, Gary J. Blazek