Abstract: A rig skidding method involving raising a rig on jacks, positioning skid tracks comprising low friction plastic underneath the rig, lowering the rig, and skidding the rig along the skid tracks to a new site for rig operations. At the new site, the process is reversed to leave the rig on the ground at the new location.

Abstract: A rig skidding method involving raising a rig on jacks, positioning skid tracks comprising low friction plastic underneath the rig, lowering the rig, and skidding the rig along the skid tracks to a new site for rig operations. At the new site, the process is reversed to leave the rig on the ground at the new location.

Abstract: A device for adjusting the plane of a mattress for changing the orientation of a plane of a mattress in a semi-truck. The device for adjusting the plane of a mattress includes a housing. The housing has a top wall, a bottom wall, a front wall, a back wall, a first side wall and a second side wall. The first side wall has a hole extending therethrough. The front wall has an opening extending therethrough. Each of a plurality of pistons is securely mounted in the housing. Each of the pistons is positioned in a different corner of the housing such that each of the corners of the housing has a piston located generally adjacent thereto. Each of a plurality of shafts is extendably positioned in one of the pistons. Each of the pistons is adapted to selectively extend the shafts upwardly through the top wall. Each of a plurality of air pumps is operationally coupled to a pair of the pistons respectively positioned adjacent to one of the side walls.

Abstract: A device for adjusting the plane of a mattress for changing the orientation of a plane of a mattress in a semi-truck. The device for adjusting the plane of a mattress includes a housing. The housing has a top wall, a bottom wall, a front wall, a back wall, a first side wall and a second side wall. The first side wall has a hole extending therethrough. The front wall has an opening extending therethrough. Each of a plurality of pistons is securely mounted in the housing. Each of the pistons is positioned in a different corner of the housing such that each of the corners of the housing has a piston located generally adjacent thereto. Each of a plurality of shafts is extendably positioned in one of the pistons. Each of the pistons is adapted to selectively extend the shafts upwardly through the top wall. Each of a plurality of air pumps is operationally coupled to a pair of the pistons respectively positioned adjacent to one of the side walls.