Abstract: A lightweight, portable clamping device assists in holding and reforming pipes in piping systems. The clamping device comprises a pair of semicircular clamp halves which are placed on the abutting ends of out-of-round pipe. The clamp halves are drawn together by tightening bolts on either side to align and reform the ends of abutting pipes. The clamping device can also be used to shape and hold the end of a single piece of pipe. A plurality of access ports around the perimeter of the device allow a welder to tack weld the ends of abutting pipes prior to welding.

Abstract: An improved system for producing dry, high pressure air uses a semipermeable membrane dehydrator to remove water vapor from compressed air between two stages of compression in a multistage air compressor.

Abstract: A bolt hole alignment pin for assisting in aligning mating flanges in piping systems comprises a head, a first portion for slip fit with the bolt holes in the flanges, a second portion for centering a gasket between the mating flanges, and a third portion offset from the second portion for providing a cam action when the head is turned to bring the flanges into exact alignment.

Abstract: A stud mounted hoist assembly for lifting, moving, suspending, or loading material and equipment during construction comprises a ring assembly, a welding stud anchor, and a bushing having a chamfered inner cylindrical surface to accommodate weld flash when mounting the assembly to a load or overhead structure. The bushing and ring assembly provide pivot and swivel capability to the mount. One operator can quickly and securely install a temporary lifting point where and when needed without the assistance of support personnel.