Patents Assigned to Parco Mast and Substructures
  • Patent number: 4744710
    Abstract: A drilling rig which may have a beta mast is used for drilling holes in the earth. The mast has four quadrants. On one side there is located the drawworks. On a side 90.degree. therefrom is the side having the V door through which drilling pipe can be raised and lowered by the traveling block. In the quadrant 180.degree. from the V-door is a pipe racking board. The racking board is outside the normal work area within the derrick. Thus, one can obtain entry of the drill pipe through the V door without the pipe stored in the racking board interferring therewith. With this design there is no limitation to the amount of pipe that can be stored.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: May 17, 1988
    Assignee: Parco Mast and Substructures
    Inventor: Lowell M. Reed