Abstract: A pallet assembly is composed of multiple pallet pieces and multiple wedging elements. Each pallet piece has four corners with four individual legs and multiples engaging holes defined on sides of the pallet piece. Each leg is rectangular in transversal cross-section and selectively has a mortise or a tenon to detachably and engages with other corresponding leg on an adjacent stacked pallet piece in the pallet assembly. Moreover, each wedging element is clamped between two adjacent juxtaposed pallet pieces to widen the pallet assembly. Thereby, the pallet assembly is versatile in changing sizes, easy to be assembled and disassembled, stable in use and convenient in storage.

Abstract: A rotating device has a turning wheel, a threaded sleeve, and a nut. The turning wheel has a hub having a center hole, a wheel rim, and a plurality of spokes connected to the hub and the wheel rim. The threaded sleeve has a flange and an outer thread. The threaded sleeve is inserted through the center hole of the hub and a through hole of a table plate. The nut engages with the outer thread of the threaded sleeve. An umbrella has a center post inserted through the threaded sleeve.