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| Number | Title | Issue Date |
| 7353889 | Rotary driven pipe-bursting tool An apparatus for bursting pipe is preferably adapted to receive rotational energy from the inner member of a dual-member drill string. In a preferred embodiment, a plurality of pipe-bursting members, driven by the interconnected inner members, cut or burst a subterr... | 04/08/2008 |
| 7316069 | Pipe cutting apparatus and method A pipe cutting supplemental apparatus and method prevents thin-walled pipe from collapsing when being cut with a standard pinch roll cutter. The tool may be embodied as a solid cylindrical insert, or a hollow cylindrical sleeve. ... | 01/08/2008 |
| 7004257 | Apparatus and methods for separating and joining tubulars in a wellbore The present invention provides methods and apparatus for cutting tubulars in a wellbore. In one aspect of the invention, a cutting tool having radially disposed rolling element cutters is provided for insertion into a wellbore to a predetermined depth where a tubula... | 02/28/2006 |
| 5946990 | Drain assembly removal tool and method A drain assembly removal tool and method are disclosed for removing a drain assembly, including providing a hand grip, two prongs extending from the hand grip, and cutting means attached to at least one prong for cutting into a strainer plug body of a dra... | 09/07/1999 |
| 5685078 | Internal pipe cutter A device for cutting pipe internally includes an annular cutter head having a plurality of circumferentially spaced openings therethrough, a stepped drive shaft extending from the cutter head and having a longitudinal bore therethrough and an adapter at t... | 11/11/1997 |
| 4841636 | Positive drive mechanism for uniform feed of internal tube cutter A positive drive mechanism is provided to operate an internal tube cutter. The tube cutter has a body insertable into a tube to be severed, and a wedge-shaped slide supporting a cutting wheel on a forward portion of the cutter body. The slide and cutting ... | 06/27/1989 |
| 4712302 | Tube cutter with releasable drive The invention provides a tube cutter of the type which forces a tool bit against an interior tube wall as the bit is rotated to sever the tube from the inside. The inventive tool cutter comprises a housing for holding the tool bit at a distance from the t... | 12/15/1987 |
| 4621549 | Precision internal tube cutter A precision internal tube cutter can sever an upper end portion of a guide thimble inserted and attached within a passageway of a top nozzle adapter plate of an irradiated fuel assembly so as to facilitate reconstitution of the fuel assembly. Further, the... | 11/11/1986 |
| 4589309 | Precision internal tube cutter A precision internal tube cutter can sever an upper end portion of a guide thimble inserted and attached within a passageway of a top nozzle adapter plate of an irradiated fuel assembly so as to facilitate reconstitution of the fuel assembly. Further, the... | 05/20/1986 |
| 3939561 | Pipe cutting mechanism A tool for cutting pipe from the inside includes a mounting plate for supporting an arbor and coaxially locating that arbor within the bore of the pipe. The arbor is axially adjustable and has a cutting head mounted on one end thereof. The cutting head in... | 02/24/1976 |
