Abstract: A raised flooring system and methods of forming components of such a system are disclosed. Systems consistent with embodiments of the present invention utilize thin sheet metal, typically galvanized steel, base plates laid side by side on an existing floor. Attached in a rectilinear pattern to the base plates are stand-offs, which support floor panels forming the raised or false floor (which in turn are typically covered with carpet tile). In addition to supporting the floor panels, the stand-offs form a network of channels where conduit, cables, hoses, pipe and similar materials can be routed. The stand-offs are punched and then formed from thin sheet metal, also typically galvanized steel, and have an overall shape generally that of a truncated cone achieved with four arms that have rolled edges for enhanced load-bearing capacity.

Abstract: A sheet puller designed to move sheet metal stock having a rotatable offset cam with teeth which interacts with a pressure plate which holds the sheet to be moved, the teeth on the cam being designed to engage the sheet when the puller is moved in one direction and disengage the sheet when the puller is moved in the opposite direction, the sheet being received between a guide support top and a guide support base.

Abstract: A trailer hitch assembly including a tow-carrying upstanding ball and an adaptor removably mounted on the ball to increase the effective diameter of the ball. The socket of a coupler of a trailer is mounted over the adaptor.