Abstract: A pipe cutter is designed for cutting a pipe from the inside by insertion of the pipe cutter through an open end of the pipe. The pipe cutter includes an elongated hollow sleeve with first and second ends in which an elongated shaft which is longer than the hollow sleeve is located for rotation. One end of the elongated shaft is adapted for connection to a source of rotational power; and the lower or opposite end of the elongated shaft is attached to a rotary saw blade. A centering housing is located between the first and second ends of the hollow sleeve and includes a mechanism for moving the sleeve and the elongated shaft located in it from an initial position with the saw blade out of contact with the interior of the pipe to a position radially outward from the central axis of the pipe to engage and cut the pipe through a circular or orbital motion of the pipe cutter.

Abstract: A safety hole cover particularly useful in providing temporary protection for drilled and augured holes has a flange portion which is placed on the ground surrounding the hole. This flange portion has a circular opening through it; and the diameter of this opening is at least as great as the diameter of the largest hole to be covered by the hole cover. A domed housing fits over the opening in the flange, and telescoping cylindrical sections are located within the housing. The external diameters of the telescoping cylindrical sections are selected to correspond to the internal diameters of different holes with which the device is to be used. The lowermost (and smallest) cylindrical section has retractable fingers or spikes in it for extension outwardly from the side of the section to engage the side walls of a hole when the device is in place over the hole. The housing provides a visible indication of the presence of the device; and by locking the device in place, removal by vandals is inhibited.

Abstract: A method and apparatus which utilizes a novel dye solution for dyeing carpet in which the dye solution is heated to a temperature higher than the boiling point of water thus allowing fixation of the dye on the carpet without the need for a steam fixator.