Patents by Inventor James H. Higgins

James H. Higgins 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 system for high temperature or pressure environments
    Patent number: 4628951
    Abstract: An electromagnetically actuatable probe is inserted in a vessel containing a body of liquid and in which high pressure, high temperature, corrosive, or other hostile conditions exist. Pulses are transmitted to the probe within a predetermined range of frequencies which include the normal resonant frequency of the probe. Return signals are generated by the probe between the times the transmitted pulses are sent. These return pulses are processed to produce signals which are a function of the level of the liquid that are then employed to control the discharge of the liquid or used by another utilization circuit.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: December 16, 1986
    Assignee: Chemical Data Systems, Inc.
    Inventors: James H. Higgins, Woodford A. Bowe, Robert Laragione