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| Number | Title | Issue Date |
| 7435373 | Apparatus and method for thermal de-burring of slotted well liners A method and apparatus for removing burrs from inside slotted metal liners exposes the burrs to a high-intensity gas flame that effectively oxidizes or incinerates the burrs, without inducing undesirable temperature levels in the parent metal of the slotted liner. T... | 10/14/2008 |
| 6508975 | Automated internal pipe cutting device The invention is a remotely controlled internal pipe cutting device primarily used for cutting pipes where the outside of the pipe is inaccessible at the line where the cut is to be made. The device includes an axial ram within a rotational cylinder which... | 01/21/2003 |
| 6051803 | Pipe cutting apparatus Plasma arc cutter apparatus for cutting large diameter pipe from within the pipe, a frame with adjustable legs, a locking device to secure the apparatus within the pipe, apparatus to adjust the spacing between the plasma arc and the inside wall of the pip... | 04/18/2000 |
| 5110095 | Spacer blocks for pipe beveling and/or welding machine Spacers for supporting an arcuate saddle in concentric relation with respect to each of three specifically different sizes of pipe wherein a plurality of spacers are connected to the saddle and disposed radially between the saddle and one of the pipes, ea... | 05/05/1992 |
| 4948101 | Apparatus for making divergent cuts chamfered relative to a cutting surface by means of torch cutting The invention relates to an apparatus for making divergent cuts chamfered relative to a cutting surface, e.g. welding chamfers, by means of torch cutting particularly in the internal cutting of cylindrical sheets, such as pipes. The apparatus comprises a ... | 08/14/1990 |
| 4667936 | Pipe cutting apparatus This invention relates to a pipe cutting apparatus for cutting large diameter pipe. The apparatus is provided with a cutting means which can be angled for cutting miters. The cutting means can be a torch. The apparatus has a flexible drive mechanism which... | 05/26/1987 |
| 4659068 | Ice basket cruciform removal tool A tool for removing cruciforms from an ice basket having an elongated, generally cylindrical and vertically oriented sidewall, the interior of which is accessible from the upper end thereof. The tool is lowered into the ice basket from the open, upper end... | 04/21/1987 |
| 4600180 | Scarfing tool An apparatus for internally removing a raised weld bead of a longitudinal seam welded tube having an elongate mandrel support body. A cutting tool is mounted on the support body adjacent one of its ends and projects outwardly from one surface on the body.... | 07/15/1986 |
| 4593887 | Cutting torch guide A strip made up of a linear series of rigid links hinged together. Magnets are mounted on certain links, at spaced points, for holding the strip on the object to be cut by a torch. Spacers are located on the links on which the magnets are not mounted, hol... | 06/10/1986 |
| 4483721 | Method and apparatus for cutting patterns through pipe A method and apparatus for cutting a series of patterns spaced along the length of a tubular member (e.g. drill collar). A cutting torch is positioned and manuevered within the bore of the pipe so that all cutting is done in an inside-to-outside direction... | 11/20/1984 |
| 4455015 | Steering apparatus for an autogenous cutting torch A steering apparatus for an autogenous cutting torch for cutting holes of desired shape in flat or curved sheet walls, such as in the wall of a pipe. The steering apparatus comprises a holder arm for an autogenous cutting torch and means for guiding the h... | 06/19/1984 |
| 4378934 | Method and apparatus for salvaging large pipe elbows An apparatus is disclosed for re-claiming used or damaged tube turns and rendering them equivalent to new tube turns with correctly oriented openings. A salvaged tube turn is temporarily fixed to a platform in a position such that the longitudinal axis of... | 04/05/1983 |
| 4279405 | Device for making emergency exits in a crushed transport means A device comprises a gas cutter in the form of an annular combustion chamber (10) provided with injectors and manifolds for delivery of oxidant and fuel into the combustion chamber (10) and an annular nozzle (9) adapted to cut an escape hatch out of the i... | 07/21/1981 |
| 4162383 | Oxy-arc apparatus for cutting inside a pipe Disclosed herein is a device for cutting a pipe from the inside by the oxy-arc cutting technique. This device comprises, in combination, guide means for guiding the device proper inside a pipe subjected to cutting, fixing means provided with a plurality o... | 07/24/1979 |
| 4126065 | Pipe end finishing apparatus Apparatus for finishing the ends of pipes, particularly for shaping the ends of pipes preparatory to welding the pipes together end-to-end, wherein the cutting tool or tools employed to finish the pipe end are urged against the pipe end hydraulically, and... | 11/21/1978 |
