Abstract: A cylinder assembly, a system, and methods of operating a cylinder assembly and lifting a load. The assembly may generally include a housing; a hydraulic pump supported within the housing; a motor supported within the housing and operable to power the pump; a power source supported by the housing and operable to supply power to the motor; a cylinder coupled to the housing; a piston movably supported by the cylinder, the pump being operable to supply hydraulic fluid to the cylinder to move the piston to an advanced position; and a support member engageable with a work surface to support the assembly relative to the work surface, the support member being coupled to the cylinder. The assembly may have a maximum rated force capacity of at least 15 tons (t).

Abstract: A structural reinforcement for a hollow member comprising a rigid reinforcing member having a shape that substantially conforms to the cross section of the hollow member to be reinforced with an expandable adhesive material over at least a portion of the surface of the structural reinforcement having one or more extensions on its external surface which control and direct the direction in which the adhesive material expands to bond the reinforcing member to the internal surface of the hollow member, some of the extensions also provide improved reinforcement.