Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7434315 | Method and device for pipe splitting A device and method for pipe replacement is shown. A pipe replacement device is shown that includes at least one scoring wheel to provide a more progressive cut that provides consistency in the split of the pipe. A pulling force is reduced using pipe replacement dev... | 10/14/2008 |
| 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 |
| 7172027 | Expanding tubing A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion m... | 02/06/2007 |
| 7168497 | Downhole sealing A method of providing a downhole seal, such as a packer, in a drilled bore between inner tubing and outer tubing comprises: providing an intermediate tubing section defining a seal arrangement for engaging with the inner tubing; and radially plastically deforming th... | 01/30/2007 |
| 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 |
| 6976539 | Tubing anchor A method of installing a liner in a drilled bore below a section of bore previously lined with casing comprises the steps of: running a length of liner into the bore such that at least an upper end of the liner is positioned in overlapping relation with at least a l... | 12/20/2005 |
| 6923261 | Apparatus and method for expanding a tubular A method of isolating a section of downhole tubing comprises: running a length of expandable tubing (20) into a tubing-lined borehole (12, 14) and positioning the expandable tubing (20) across a section of tubing to be isolated; deforming at lea... | 08/02/2005 |
| 6920935 | Expandable downhole tubing A tubing coupling method is provided. In one aspect, the method comprises providing a length of expandable tubing and a length of larger diameter non-expanding tubing, connecting an end portion of the expandable tubing to an end portion of the non-expanding tubing, ... | 07/26/2005 |
| 6631532 | Engine block cylinder groove cleaner An engine block cylinder groove cleaner for cleaning the grooves in the cylinder of a diesel engine. The engine block cylinder groove cleaner includes a main housing comprising a lower portion. A plurality of groove cleaning members each being outwardly e... | 10/14/2003 |
| 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 |
| 5815926 | Internal pipe cutter A new Internal Pipe Cutter for providing a cutting tool designed for cutting the wall of a pipe from inside the pipe through an opening at one end of the pipe. The inventive device includes an elongated shaft having an upper end adapted for connection to ... | 10/06/1998 |
| 5499453 | Synthetic resin toilet flange cutting tool The herein referenced invention belongs in general relation to tubing cutters. The invention specifically relates to an internal tubing cutter, one which is lightweight and portable and adapted for cutting synthetic resin pipe and toilet flanges. The appa... | 03/19/1996 |
| 5407382 | Method and apparatus for severing tubular material around a mandrel A method for severing tubular material around a rigid mandrel. The method comprises piercing the film with a knife such that the edge of the knife faces away from the mandrel, rotating the knife about the mandrel in a direction toward the knife edge while... | 04/18/1995 |
| 5042334 | Interior pipe cutter with safety extension A interior pipe cutter with depth of cutting guide and safety extension is described for cutting pipe from the inside out, while preventing the cutting blade from extending too far outside the pipe workpiece, so that it does not jump outside the pipe or d... | 08/27/1991 |
| 5012863 | Pipe milling tool blade and method of dressing same A blade (8) for a pipe milling tool having a body (1) and a longitudinal axis (100) has a plurality of slots (12) extending both in a generally radial direction and in an intended direction of rotation of the milling tool about the longitudinal axis. Loca... | 05/07/1991 |
| 4932125 | Internal pipe cutter A cutting tool is designed to cut through plastic pipe from within. This operation is required when a pipe is mounted in a floor or wall and must be cut off below the level of the floor for installation of plumbing fixtures. A rotary shaft with a rotary s... | 06/12/1990 |
| 4903406 | Pipe splitter A pipe splitter having an elongated frame, a first end and a second end is disclosed. A first roller and a second roller is rotatably positioned proximate the first end and the second end of the elongated frame, respectively, to rotatably support the elon... | 02/27/1990 |
| 4844660 | Apparatus and method for removing offshore pilings An assembly for severing tubular piling used to support offshore platforms comprising a support or frame secured adjacent the open, upper end of the piling, a cutting string suspended from the support and comprised of a pipe string, a centralizer and an i... | 07/04/1989 |
| 4799412 | Method for severing the ends of tubing Method for severing the ends of tubing by feeding the end of a tube through a die such that its end to be sheared extends beyond the die while presenting a shear blade with a pointed end in the interior of the tube end. After the shear blade is inserted i... | 01/24/1989 |
| 4779496 | Tube cutting apparatus and method An improved tube cutting apparatus and method for cutting through the inside of a metallic tube is disclosed herein. The apparatus generally comprises a support assembly which is slidably insertable within a tube, a flail tube cutting head connected to a ... | 10/25/1988 |
| 4768899 | Device and method to cut piles A device and method for severing the piles, grout and structural sleeves of vertical marine structures, from the inside of the structural member or the outside of the structural member. The device will sever the pile, grout or sleeve without jamming even ... | 09/06/1988 |
| 4754684 | Shotgun shell shortener and method A method and device (A) for cutting a shotgun shell (14) for shooting in a shotgun chambered for shorter shotgun shells includes a base (10) and shell receiving tube (12). A shell (14) is held in tube (12) above a knife (32) in such a manner that a circum... | 07/05/1988 |
| 4718201 | Method for cutting a boiler tube and apparatus therefor A portable tube cutter and a method of cutting a boiler tube in a power generating station with the portable tube cutter is disclosed comprising electromagnetically clamping a portable tube cutter to a circumferential portion of a tube to be cut in a powe... | 01/12/1988 |
| 4667547 | Apparatus and method for removing a top nozzle in reconstituting a fuel assembly A cutter guide fixture for use in removing a top nozzle from the guide thimbles of a fuel assembly includes upper and lower plates coupled to one another for movement of the upper plate relative to the lower plate between upper and lower positions. The pl... | 05/26/1987 |
| 4601223 | Flail tube cutter A flail tube cutter having an elongated cutting head circumscribed by a generally circular cutting blade, a means of rotating this cutting head, and a flexible shaft for coupling the cutting head to the rotating means is disclosed herein. The circular cut... | 07/22/1986 |
| 4577406 | Retracting internal tube cutter A retracting internal tube cutter for severing a tube from the interior is disclosed. The tube cutter includes a pair of swing arms mounted for pivotal outward displacement for effecting cutting of the tube. A retractor collar biased by a spring is mounte... | 03/25/1986 |
| 4576070 | Pipe cutter and method A pipe cutter having guidance means for cutting a pipe on a plane generally perpendicular to the longitudinal axis of the pipe. A power tool imparts a rotational torque to a shaft having a circular cutting blade carried thereon at substantially right angl... | 03/18/1986 |
| 4466185 | Adjustable interior pipe cutter A pipe cutter is provided whereby a pipe or workpiece is cut from the inside out said cut accomplished by rotating cutters that are mounted on the ends of pivoted sliding guides wherein the guides are pivoted at the end opposite to that of the cutters and... | 08/21/1984 |
| 4307512 | Rotary wand with attached circular saw blade An elongated shank section is provided including mounting structure on one end of the shank section for removably mounting a rotary saw blade thereon. Coupling structure is provided on the other end of the shank section for removably coupling a source of ... | 12/29/1981 |
| 4220201 | Casing perforator A lower portion of water well casing in the ground is perforated by means of a toothed wheel journalled on the end of an arm pivotally carried by an elongated perforator body. The perforator body carries an air driven piston and actuator link connected to... | 09/02/1980 |
| 4177558 | Internal cutter for trimming plastic pipe A cutter for trimming plastic pipe which has been roughed in with an end projecting through an opening in a floor so that the trimmed end is in fixed relation, above or below, the surface of the floor. The cutter comprises a housing with its lower end rid... | 12/11/1979 |
| 4143463 | Auxiliary device for laying flexible wall and floor coverings An auxiliary device for laying flexible wall and floor coverings includes an elongated angle plate having a supporting surface for the material to be cut to size and a pressure strip having a lower pressure surface of approximately the same length as the ... | 03/13/1979 |
| 4133105 | Internal pipe cutter An internal pipe cutter of simplified construction allows easy conversion from a large-diameter pipe cutting configuration to a small-diameter pipe cutting configuration. An arm carrying a pressure roller assembly is pivoted to a body part carrying a rota... | 01/09/1979 |
| 4106561 | Well casing perforator A well casing perforator adapted to be used with pneumatically powered rotary drilling equipment. It includes an upright elongated body which is inserted within the casing. The body is attached to the lower end of a drill rod which imparts vertical or ang... | 08/15/1978 |
| 4085505 | Polyethylene internal bead remover Apparatus for removing the internal bead from a polyethylene pipe joint, that has been fabricated by the fusion process, comprising a torque tube of sufficient length to reach from the open end of the pipe to the joint from which the internal bead is to b... | 04/25/1978 |
| 3977076 | Internal pipe cutting tool An internal pipe cutting tool to be inserted in an end opening of a pipe to be cut from the inside out has an outer elongated hollow support member with an adjustable support collar at one end to adjust the length of the pipe to be cut by the pipe cutting... | 08/31/1976 |
| 3942248 | Pipe cutting device A pipe cutting device comprises a split frame which may be clamped around the circumference of a pipe (either inside or outside of the pipe). Floatingly or freely mounted on the rollers carried by the frame, to rotate about the pipe, is a ring gear having... | 03/09/1976 |
