Abstract: A modular workpiece holding system having a top portion of a baseplate member having at least one opposingly facing fixed wedge assembly and dynamic wedge assembly. The dynamic wedge assembly is operationally coupled to at least one spring and piston assembly adapted to draw the dynamic wedge assembly axially towards the baseplate member wherein the dynamic wedge assembly, when the workpiece holding system is in a resting state, imparts a transverse force onto a workpiece member, pressing the workpiece member against the fixed wedge assembly, securing the workpiece to the workpiece holding system. The spring member is releasable when one or more of a gas and hydraulic fluid used to push the dynamic wedge assembly outward is discharged from the spring and piston assembly cavity within the fixture base, whereupon the spring member is adapted to re-impart the traverse force of the resting state of the dynamic wedge assembly.

Abstract: A hydraulic cylinder cushion including a cylinder having a longitudinal axis and an inner chamber, a piston rod having a base, a cushion spear having a spear base, a shaft extending from the spear base, and a spearhead arranged opposite the spear base, the spearhead comprising a hemispherical portion connected to the shaft, wherein the hemispherical portion is diametrically larger than the shaft, and an end cap having a bore, wherein the end cap is secured to a first end of the cylinder such that the bore faces the inner chamber and is substantially aligned with the longitudinal axis, the piston rod is slidingly arranged within the inner chamber along the longitudinal axis such that the base faces the end cap, the cushion spear is pivotably secured to the base of the piston rod and extends toward the bore, and the bore is adapted to receive the cushion spear therein.

Abstract: The present invention is a hydraulic locking cylinder assembly comprising a bi-directional control relief valve integrated with a piston. More particularly, the present invention is a bi-directional control relief valve for a hydraulic cylinder, fully integrated with a piston, and having a single poppet valve that performs the function of both a direction control valve and a relief valve.