A pneumatic telescopic column assembly for supporting and moving military equipment, communication equipment, lighting equipment and/or surveillance equipment is provided. The pneumatic telescopic column assembly extends along an axis and has a plurality of tube groups telescopically configurable between a compact configuration and an extended configuration. The plurality of tube groups has a base tube group, an intermediate tube group and a head tube group. The base tube group has a base tube element and a base locking ring that has at least one horizontal latch, at least one actuator and at least one vertical latch. The intermediate tube group has an intermediate tubular element and an intermediate locking ring that has at least one horizontal intermediate latch. The tubular head group has a tubular head element.

A pole cradle is disclosed. The pole cradle including a first leg; a second leg; a third leg positioned between and pivotally connected to the first and second legs by a pivot connector extending through the first, second, and third legs, wherein the third leg pivots relative to the first and second legs between a first position and a second position; and a support connector extending between the first and second legs, the support connector providing a stop for the third leg such that in the second position, the third leg abuts against the support connector.

A pole cradle is disclosed. The pole cradle including a first leg; a second leg; a third leg positioned between and pivotally connected to the first and second legs by a pivot connector extending through the first, second, and third legs, wherein the third leg pivots relative to the first and second legs between a first position and a second position; and a support connector extending between the first and second legs, the support connector providing a stop for the third leg such that in the second position, the third leg abuts against the support connector.

A lift system for performing operations on a structure includes a base and rack assembly mounted on the base. The rack assembly includes at least two legs. A carriage is engaged with the rack assembly, and is configured to travel vertically along the legs of the rack assembly. A crane is configured for transverse movement on the carriage. In some implementations, the base is moved under self-propulsion. In some implementations, the base includes a leveling assembly that is operable to adjust an orientation of the rack assembly with respect to the structure.

A mast (10) which includes an elongate post (12) with a first end (14) and a second end (16), the first end (14) being pivotally secured to a ground-engaging support base, at least a first mechanism (22) to restrict pivotal movement of the post (12), a winch (26) which is attached to the post (12), and a cable (28) which is engaged with the winch (26) and which is secured at one end to an anchor (30), wherein the winch (26) is actuable to allow the post (12) to pivot, from an elevated position, in a first direction (54) which lowers the post (12) against the action of the movement restricting first mechanism (22), and which is actuable to pivot the post (12) in a second direction (56) which opposes the first direction (54) to elevate the post (12).

A process, mechanical method, and mechanical utility invention that creates an expandable sustainable member beam with utility in its' substantially different shape, mobility, multi-functional capabilities, and sustainability from its' conventional counter part. It can be utilized independently, as a utility stand, in plurality, sharing a base(s) and platform(s), as a step, or in conjunction with other expandable sustainable member beams from which to build. EI. Some embodiments may replace a conventional wood or metal 24 stud in many applications. Additional utilities include, but not limited to: A post, concrete form, assistive device for mobility challenged individuals, independent balance, self-leveling, varying angular degree manipulation, elevational deployment and retraction capabilities. It can be substantially shortened for transport and deploy to varying longitudinal values to regain its utility upon user demand. Thereafter, it can be un-installed and used again for like or different utilities, making it largely sustainable.

A method for installing tower fittings by introducing at least two separate supply modules into a wind turbine tower, wherein a separate supply module structurally includes one segment each of at least two system components of the wind turbine tower, and wherein an upper segment end is arranged on an upper edge, and a lower segment end on a lower edge, of the supply module, including: arranging the upper edge of a first separate supply module at an upper end of the wind turbine tower; connecting an upper segment end of the first separate supply module to a lower segment end of a corresponding system component of a second separate supply module; and arranging the upper edge of the second separate supply module at the upper end of the wind turbine tower.

A method for installing tower fittings by introducing at least two separate supply modules into a wind turbine tower, wherein a separate supply module structurally includes one segment each of at least two system components of the wind turbine tower, and wherein an upper segment end is arranged on an upper edge, and a lower segment end on a lower edge, of the supply module, including: arranging the upper edge of a first separate supply module at an upper end of the wind turbine tower; connecting an upper segment end of the first separate supply module to a lower segment end of a corresponding system component of a second separate supply module; and arranging the upper edge of the second separate supply module at the upper end of the wind turbine tower.

A method for creating a tapered spiral welded conical structure where the overall shape of the cone is first graphically slit axially and unwrapped, and then a series of construction arcs and lines are created to form the edge lines of a strip that can then be wrapped (rolled) to form a tapered conical structure. The edges of the spirally wound strip can be welded together, and a very large conical structure can thus be achieved. Various construction options are presented from a constant width strip to strip made from straight segments. Equations are given for the formation of the strips to enable those skilled in the art of spiral welded tubing to practice the invention.

A method of building and operating a land-based drilling rig with a high-capacity mast include providing a platform collapsed on a substructure over a proposed well drilling location and building the high-capacity mast in a horizontal condition by attaching a lower portion of the high-capacity mast to the platform. The high-capacity mast having an opening formed therein sized to accommodate four Range 2 pipes or three Range 3 pipes. The high-capacity mast may be raised from the horizontal condition to a vertical condition by pushing the side of the high-capacity mast to pivot the high-capacity mast about a pivot point on the platform. The platform may be raised from a collapsed condition to a raised condition over the substructure. Some implementations include dual racking boards on the high-capacity mast.