Patents by Inventor William Michael Mulligan

William Michael Mulligan 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).

  • Drill with integrally formed bent sub and sonde housing
    Patent number: 9453372
    Abstract: A fluid-actuated directional percussive impact tool includes a back head for connection to a pressurized fluid source and a tool casing housing a drill bit longitudinally movable with respect thereto. The drill bit has a central axis extending longitudinally therethrough. A sonde housing is coupled between the back head and the tool casing and has a sonde disposed therein. The sonde housing has a central axis extending longitudinally therethrough. A bent sub is integrally formed with the sonde housing and connects the sonde housing to the tool casing such that the central axis of the drill bit intersects the central axis of the sonde housing at a non-zero angle.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: September 27, 2016
    Assignee: EASTERN DRILLER MANUFACTURING CO., INC.
    Inventors: Timothy Stump, Antonio Castrero, William Michael Mulligan