Abstract: A pipe tool with a base unit and peripheral components for holding or manipulating pipe sections. The peripheral components allow the pipe tool to be configured for holding pipes of various sizes in alignment so they may be welded at a seam. The tool can also be reconfigured for changing the cross sectional shape of a deformed pipe end or for spreading open objects such as valve or pipe flanges.

Abstract: A rescue tool has a pair of arms which are opened and closed by rotating a threaded member. The arms are pivotably connected together, and are also connected to a common yoke. The yoke is connected to a piston, which is mounted within a frame. Movement of the piston along its longitudinal axis causes the arms to open and close. The piston is connected to a collar which screws onto a threaded member. Rotation of the threaded member therefore causes the piston to move back and forth along its longitudinal axis, and opens or closes the arms. The threaded member can be connected to an external source of power, such as a pneumatic, hydraulic, or electric motor. Alternatively, the threaded member can be rotated by a hand-operated crank. The rescue tool can be connected to a variety of different power sources, without modifying the internal structure of the tool. Because the power source is coupled to the arms through a threaded member, the arms can be moved with great precision.