Patent ID: 8112946
Filing Date: 2012-02-14
Classification: E21B

Abstract:
1. An articulating mast, comprising: an open face; a pair of opposed sides, each side having a front leg and a rear leg; a back face extending between said rear legs; a pair of back face vertical supports running parallel to each other; a plurality of back face horizontal supports, each said horizontal support having a first and second opposed end, each said horizontal support first end pivotally attached to one said back face vertical support and each said horizontal support second end pivotally attached to one said rear leg; a plurality of back face diagonal supports, each said diagonal support having a first and second opposed end, each said diagonal support first end pivotally attached to one said back face vertical support adjacent one said horizontal support first end; and a plurality of connecting devices on said rear legs adjacent said horizontal support second ends, such that each said diagonal support second end may be attached to one said rear leg by connecting said diagonal support second end to one said connecting device, such that said articulating mast may be folded from an open position to a closed position by disconnecting said plurality of connecting devices from said plurality of diagonal support second ends to allow said diagonal support first ends, said horizontal support first ends, and said horizontal support second ends to pivot such that said plurality of back face horizontal supports and said plurality of back face diagonal supports move within a plane defined by said back face to lie relatively closer to said back face vertical supports, such that, when the articulating mast is in said closed position, said rear legs remain within the plane defined by the back face, but are located relatively closer to said back face vertical supports and vertically offset from their location when in said open position and two planes each defined by one of the sides remain perpendicular to the plane defined by the back face at all times.