Abstract: A line mole trap used as a safety device in water blasting operations is attachable to the end of a pipe and has a tubular sleeve partially disposed within a housing assembly. A line mole connected to a fluid supply hose and inserted through the sleeve is prevented from exiting the rear of the trap by a yoke placed around the supply hose. In response to the relative movement of the sleeve and housing caused by the action of a compressed spring and air cylinder, a plurality of jaws, each operatively coupled to a linkage coupling the housing and sleeve, either collapse against or retract away from the surface of the pipe being cleaned.

Abstract: A fluid-jetting apparatus includes a carriage member and an actuator member which are movable relative to each other depending upon the setting of respective brakes associated with the carriage member and actuator member and the actuation of a cylinder mounted on the carriage member having a piston rod extending therefrom and being connected to the actuator member. The movement of the carriage member and the actuator member is remotely controlled by a control mechanism including a dual timer and valve circuit contained in a housing. The control mechanism causes the carriage member and the actuator member to be alternately moved in increments along a support member on which the carriage member and the actuator member are mountable. The traversing of the support member can be in either direction.

Abstract: Apparatus and a method for cutting round perforations and elongated slots in well flow conductors used in solution mining. The apparatus comprises a jet nozzle head for discharging a fluid to cut the perforations and slots, a string of continuous tubing for handling the jet nozzle head in a well bore, a tubing injector or tubing guide, a tubing storage reel having a flow conducting central hub connected with the tubing on the reel for forcing the abrasive fluid into the tubing at the reel, fluid pump and storage means connected with the reel hub, means for mounting the tubing injector above a well, and a wellhead having annular stripper rubber for sealing around the tubing and a side outlet for fluid returns.

Abstract: An apparatus for rapid removal of rubber, paint, oil and other contaminants from large planar surfaces by high pressure jetting through a mobile pattern of fan-tail nozzles. One embodiment utilizes a laser beam system to guide a mobile pattern of nozzles along a planar surface. Another embodiment utilizes a spray bar horizontally angled to a supporting vehicle. Another embodiment utilizes a protractor to measure the vertical attack angle between a mobile spray pattern and a planar surface.