Abstract: A pile system for support structures includes at least two piles each having a first end, a second end, and a cylindrical elongate body. Each cylindrical elongate body has an inner surface and an outer surface, extends from the first end toward the second end, and defines an internal cavity with a longitudinal axis. Each pile further includes a transition region between the elongate body and the second end, the transition region including an annular seating shoulder disposed on the inner surface of the cylindrical elongate body that defines a step increase from a primary inner diameter to a secondary inner diameter. The first end of a first pile of the at least two piles is configured to be inserted into the second end of a second pile until a first distal edge thereof contacts the seating shoulder of the second pile.

Abstract: A jack extension handle assembly that includes first and second elongated segments or extensions connectable together to provide a stable, extended jack handle. At the end of its solid rod-shaped body, one handle extension includes a tapered plug connector. A tapered socket connector at the end of the solid, rod-shaped body of the other handle extension mates with the plug connector during assembly of the handle. The plug and socket taperings account for forging tolerances so as to ensure a proper force-transmitting engagement between the handle extensions. The handle assembly also includes a retainer clip which externally mounts on the two handle extensions to prevent inadvertent separation of the handle extensions during use.