Patents by Inventor Patrick C. Knight

Patrick C. Knight 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).

  • Patent number: 6749020
    Abstract: The well screen two step coupled connector and method includes providing a well screen with a then walled tubular pin having a constant diameter channel and three pin sections of successively increasing diameter. The end of the pin has an annular surface and an angled recess is provided between the intermediate and innermost pin sections, while non-inclined external threads are formed on the end and intermediate pin sections. A tubular open ended coupling is provided having a passage divided into two coupling sections by an inwardly projecting divider. Each coupling section is configured to receive the end and intermediate pin sections and includes non-inclined threads to mate with the pin section threads. The coupling includes an angled wall adjacent the divider to provide a seal with the annular angled surface at the end of the pin and an angled projection which fits within and forms a seal with the angled recess in the pin.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: June 15, 2004
    Assignee: Benoit Machine Inc.
    Inventor: Patrick C. Knight