Patent ID: 9631436
Date: 2017-04-25
CPC Classifications: E04H,E21B

Claim:
1. A self-elevating platform system, the system comprising: a platform floor having an opening formed therethrough, wherein the opening is sized to accommodate a mast section; a carriage frame attached to, and extending vertically from, the platform floor; a drive carriage attached to the carriage frame, wherein the drive carriage is adapted to move the mast section vertically and through the opening of the platform floor; a first upper frame and a second upper frame each attached to the platform floor; a sub skid located below the platform floor, wherein the sub skid comprises a generally horizontal top surface that is sized to fit between the first upper frame and the second upper frame; and a plurality of actuators extending from the generally horizontal top surface of the sub skid in a vertical direction, the plurality of actuators located below the platform floor and between the first upper frame and the second upper frame; wherein each of the actuators is extendable and retractable along a vertical axis, wherein the plurality of actuators are adapted to extend to a first height at which a first middle frame may be arranged below the first upper frame and a second middle frame may be arranged below the second upper frame; and wherein the plurality of actuators are adapted to retract to a second height at which the first middle frame may be attached to the first upper frame and the second middle frame may be attached to the second upper frame.