Abstract: To couple a drive shaft to a rotatable member for rotation therewith and the method of doing so includes providing a rotatable member having at least one end with a bore therein, a drive shaft, and an expandable and compressible coupler having a first segmented sleeve and a second segmented sleeve. The coupler is positioned within the bore of the rotatable member and the drive shaft is extended within a bore of the coupler and is coaxially disposed relative to the rotatable member. Without having to bolt or weld the drive shaft to the rotatable member, the user securely couples drive shaft to the rotatable member and substantially prevents removal of the drive shaft from the rotatable member by the user simply threading the first segmented sleeve into the second segmented sleeve thus simultaneously effecting engagement of the coupler within the bore of the rotatable member and substantially clamping or compressing of the coupler about the drive shaft.

Abstract: An adjustable stand for supporting heavy loads such as pallets at various heights, the stand having a platform formed of four channel shaped beam members securely fastened together in a generally rectangular form with two of the beam members being relatively long and extending longitudinally of the platform and having spaced notches on their under surfaces, there being two pairs of legs disposed adjacent opposite sides of the platform, the legs of each pair being pivotally secured together near their longitudinal midpoints. The upper ends of one leg of each pair are disposed within the longitudinally extending beams and pivotally secured thereto. The upper ends of the other legs are joined together by a rod member designed to fit within the pairs of spaced notches so that the height of the platform is dependent upon the location of the pair of notches in which the rod member is placed.