Abstract: A welding tank cart system for providing efficient transportation of welding tanks and welding supplies. The welding tank cart system includes a frame, a pair of side wheels, a wheel support connected to the frame, and a front wheel connected to the wheel support, wherein the front wheel is comprised of a swivel wheel. A tray is pivotally connected within the frame to provide for self-leveling regarding of the attitude of the frame. A chain crank is connected to the frame for tightening a chain structure about the welding tanks.

Abstract: A trailer hitch that provides a heavy duty center box type for gooseneck or fifth-wheel trailers which may be quickly removed from a truck bed to leave the truck bed uncluttered and unobstructed. The hitch includes a hitch frame that fixedly mounts rear latch legs to depend therefrom through slots in the bed to latchingly engage the rear edge portion of a mounting member which is fixed to the truck frame beneath the truck bed (floor). A pair of front latch legs are pivoted to the hitch frame in depending relationship for movement by a handle between a position to latchingly engage the front edge portion of the mounting member and a release position. Lock arms are mounted on the hitch frame for pivotal movement by trigger mechanism between a position to retain the front latch legs in their latching position and a position permitting the front latch legs to move to their release position.