Patents by Inventor Terry L. Engelhardt

Terry L. Engelhardt 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).

  • Sensor insertion into an active conduit
    Patent number: 7121158
    Abstract: A method and apparatuses for installing a sensor on an active conduit is disclosed. An adaptor is attached to a corporation stop valve that has been installed onto an active conduit in the closed position. A sensor is positioned at a first position in the adaptor forming a seal between the sensor and adaptor. At the first position the sensor is automatically inhibited from moving further into the adaptor. The corporation stop valve is opened and the sensor is further inserted into the adaptor through the open corporation stop valve and into the active conduit.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: October 17, 2006
    Assignee: Hach Company
    Inventors: Elijah J. Scott, Terry L. Engelhardt, Eugene G. Fatton