Patent ID: 9719271
Date: 2017-08-01
CPC Classifications: E04H,E21B

Claim:
1. A drilling rig assembly comprising: a collapsible substructure movable between stowed and deployed positions, the collapsible substructure including: a base box; a drill floor framework; a drill floor above the drill floor framework; and a plurality of legs having ends pivotally connected between the base box and the drill floor, the legs supporting the drill floor above the base box in the deployed position; a raising cylinder having a lower end pivotally connected at one end to the base box and having an opposite articulating end; the raising cylinder being selectively extendable relative to the pivotal connection at the base box; a cantilever having a lower end and an upper end, the lower end being pivotally connected to the drill floor framework, the upper end movable between a stowed position below the drill floor and a deployed position above the drill floor; and, the upper end of the cantilever being connectable to the articulating end of the raising cylinder when the cantilever is in the deployed position, such that extension of the raising cylinder raises the substructure into the deployed position.