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| Number | Title | Issue Date |
| 7490499 | Tube expanding device A tube expanding device includes: a plurality of rollers each having a tapered portion whose diameter increases toward its front side; a cylindrical expander frame for freely rotatably holding the plurality of rollers on a concentric circle; a mandrel inserted in th... | 02/17/2009 |
| 7225655 | Method for producing a shaft comprising stop caps device containing one such shaft The invention relates to a method to manufacture a shaft (22) as well as a device containing such a shaft (22), in particular an armature shaft (22) of an electromotive drive (10), which is held by at least one shaft mounting, whereby a c... | 06/05/2007 |
| 7219520 | Method and forming machine for working a workpiece An aspect of the present invention relates to a method and a forming machine for working a workpiece, for example by deforming it or fixing it in another workpiece, in which the workpiece is fitted over a mandrel, at least a part of the mandrel is expanded so as to ... | 05/22/2007 |
| 7210209 | System and method for ballizing and measuring a workpiece bore hole A system and method are described for ballizing and measuring a workpiece bore hole. In one embodiment, a ballizing unit having a distal end removably coupled to a ballizing member moves the ballizing member from a first position within the bore hole to a second pos... | 05/01/2007 |
| 7159435 | Apparatus for straightening pipe A straightening apparatus for large diameter thick wall pipe has an expander head at one end of a beam inserted into the pipe and having a radially displaceable saddle positionable at any selected location along the beam. The saddle may be shifted along the beam by ... | 01/09/2007 |
| 7124821 | 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... | 10/24/2006 |
| 7093481 | Method for roller burnishing a heater tube A process for placing a roller burnished finish on the central portion of an unfinished lathe-turned heater tube includes controlling the rotational speed of the burnishing rollers and the pressure of the burnishing rollers against the central portion of the heater ... | 08/22/2006 |
| 7073366 | Method and apparatus to reduce the width of a slot or opening in a pipe, tube or other object A method to reduce the width of slots or openings in a pipe. The method involve determining the position of the slots relative to the surface of the pipe and determining the width of the slots. A signal is generated corresponding to the determined width and relative... | 07/11/2006 |
| 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 |
| 6898957 | Method of reducing slot width in slotted tubular liners A method of reducing slot width in slotted tubular liners. A slotted tubular liner (1) is provided having an interior surface (3), an exterior surface (2) and a plurality of slots (4) extending between the interior surface and the exterio... | 05/31/2005 |
| 6766675 | Spindle mechanism In order to achieve the lightweight, low-cost and high-efficiency design of a spindle apparatus, speed-change device 50 is provided such that slots 31 are formed in one of a spindle 10 and a cam shaft 12 while spiral torque cam grooves ar... | 07/27/2004 |
| 6560835 | Skiving and roller burnishing tool Apparatus is disclosed for finishing the inside of hollow work-pieces such as long hydraulic or pneumatic cylinders. A rotatable skiving and roller burnishing tool is advanced into one end of the work-piece and advanced through the cylindrical interior of... | 05/13/2003 |
| 6532786 | Numerically controlled forming method The present invention is a method for forming sheet material into contoured parts. The invention method includes these steps: A die is fashioned having an outside surface corresponding to the inside surface of the desired part. A plastically deformable sh... | 03/18/2003 |
| 6367137 | Skiving and roller burnishing tool Apparatus is disclosed for finishing the inside of hollow work-pieces such as long hydraulic or pneumatic cylinders. A rotatable skiving and roller burnishing tool is advanced into one end of the work-piece and advanced through the cylindrical interior of... | 04/09/2002 |
| 6363764 | Forming apparatus for duct members The invention provides an apparatus and method for automated manufacture of connective fittings on a duct member, and particularly a tapered adjustable take off. The connective fitting is generally placed near the inlet of the duct member and comprises a ... | 04/02/2002 |
| 5788733 | Device for the shaping of glass tubes In a device for shaping glass tubes (32), the shaping tools (3, 4), which are designed as shaping rollers, are mounted on a rotary table (2) that encloses the glass tube (32) and that rotates at a speed that is several times higher than the speed of rotat... | 08/04/1998 |
| 5433098 | Method and apparatus for inside can base reforming An apparatus and method is shown for reforming the bottom of a container. A number of tooling rams each have a reforming roller supported by a roller mounting block that allows the reforming roller to travel along a circular orbital path of varying diamet... | 07/18/1995 |
| 5390521 | Ridge roller device A hand operated tool used to remove the burr from the inside end of a cut metal pipe comprising two rollers adapted to be placed inside the end of a pipe, means to expand the rollers with a hand squeezing motion on the handles of the tool and rotating the... | 02/21/1995 |
| 5247819 | Bore processing device A bore processing device for processing an inner surface of a bore of an object to be processed, includes: a taper member having a taper section; a roller arranged to contact and rotate around an outer surface of the taper member; a roller guide member ha... | 09/28/1993 |
| 5095727 | Roller burnishing tool for effecting diminishing stress reversal on annular workpieces A roller burnishing tool is disclosed having inner and outer pluralities of concentrically disposed, precision tapered rolls. A precision tapered annular mandrel is disposed within the inner plurality of rolls and operates to controllably urge the inner p... | 03/17/1992 |
| 5040396 | Portable internal roller swager A machine, which is portable, and method for roller swaging hydraulic fitting sleeves onto metallic tubing comprises a tapered roller mandrel expander under either or both torque control of swaging or diameter control of swaging. The machine provides an a... | 08/20/1991 |
| 4876871 | Flexible hardroll mandrel assembly for sleeving peripherally located heat exchanger tubes A flexible hardrolling mandrel for expanding a sleeve within a tube of a nuclear steam generator is disclosed herein. The flexibility of the tool facilitates the insertion of the tool into tubes of the nuclear steam generator that have only a limited acce... | 10/31/1989 |
| 4793167 | Roller swaging machine A machine and method for roller swaging hydraulic fitting sleeves onto metallic tubing comprises a tapered roller mandrel expander driven at a first high speed for rapidly expanding the tubing and at a second low speed until the drive torque reaches a fin... | 12/27/1988 |
| 4716753 | Flexible tube expander extension assembly A flexible extension assembly for use with a tube expander of the type having an expanding head which has internal apparatus driven for tube expansion by a drive device connected coaxially thereto with a spacer for locating the expanding head at a predete... | 01/05/1988 |
| 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 |
| 4693105 | Method of and apparatus for straightening, swaging, and threading a pipe A method and apparatus for swaging pipe, straightening hooked end pipe, and expanding undersized pipe for threading is disclosed in which the pipe is gripped adjacent the end to be swaged by a chuck that also rotates the pipe and a swaging tool engages th... | 09/15/1987 |
| 4658616 | Automatic roller swage machine A machine and method for roller swaging hydraulic fitting sleeves onto metallic tubing comprises a tapered roller mandrel expander driven at a first high speed for rapidly expanding the tubing and at a second low speed until the drive torque reaches a fin... | 04/21/1987 |
| 4615198 | Apparatus and method for reforming and rolling tube ends A rolling tool for both expanding and reforming the dented end of a tube within the tubesheet of a nuclear steam generator is disclosed herein. Generally, the tool comprises a rotatable roller cage having a diameter which is approximately the same as the ... | 10/07/1986 |
| 4602492 | Method and machine for expanding tubes in a tube sheet Apparatus for assembling tubular heat exchangers and particularly for expanding tubes in the tube sheets of various heat exchangers and steam generators in the petrochemical, gas-processing, chemical, power, metallurgical and shipbuilding industries inclu... | 07/29/1986 |
| 4574442 | Single pass boring, skiving and roller burnishing tool A boring, skiving, and roller burnishing tool includes means for boring, skiving, and burnishing a cylindrical hole in a workpiece. The boring means comprises a plurality of cutting blades oriented at a particular angle to remove a relatively large amount... | 03/11/1986 |
| 4527929 | Roller-guided cutting tool A skiving and roller burnishing tool for finishing the internal surface of a cylindrical bore includes a cutting assembly and a pair of roller burnishing assemblies. Each roller assembly includes a plurality of frustoconical rollers mounted on a frustocon... | 07/09/1985 |
| 4512116 | Feed-up means for expandable work engaging members An improved drive chain for a machine tool such as honing device comprising a machine tool with at least one radially movable work engaging assembly thereon, a power train operatively connected to the honing device to rotate same, and a feed motor positio... | 04/23/1985 |
| 4367576 | Skiving and roller burnishing tool A skiving and roller burnishing tool for cutting and burnishing the interior of a cylinder or other workpiece is disclosed. The cutter assembly is mounted on a drive shaft which drives the cutter assembly through the interior of the cylinder to cut the in... | 01/11/1983 |
| 4349948 | Method for manufacturing metal casings for accessories and particularly gate valves A method of manufacturing metal casings, particularly gate valve casings, comprises, forming two casing shell half portions from a plate by holding the plate and forming a valve port in at least one of the plates with a forming tool, forming wall portions... | 09/21/1982 |
| 4319472 | Tube end expander and method of operating the same A tube end expander and a method of operating the same. The tube end expander comprises a rotatable, tubular cage defining a plurality of generally axially extending slots, and a plurality of rollers located within the cage and extending through the slots... | 03/16/1982 |
| 4313248 | Method of producing heat transfer tube for use in boiling type heat exchangers The invention is concerned with a heat transfer tube for use in boiling type heat exchangers, having an excellent heat transfer performance. More specifically, the invention relates to a surface condition of the heat transfer tube for improving the heat t... | 02/02/1982 |
| 4267719 | Apparatus for assembling dynamoelectric machine stators Apparatus for forming a stator for a dynamoelectric machine by inserting prewound coils into a slotted stator core includes enlarging the slot openings or gap between certain adjacent pairs of stator teeth, placing the prewound stator windings in selected... | 05/19/1981 |
| 4242893 | Stop collar for tube expander A tube expander having a stop collar for limiting the axial movement of the tube end relative to the expander to prevent damage to the tube end. The stop collar is comprised of a hollow stop collar body having the end adjacent to the tube end slotted to s... | 01/06/1981 |
| 4232442 | Removal of residual stresses in a tube seated in a tube plate Apparatus for removing residual stresses produced in a tube by seating the tube in a bore in a tube plate, the tube having one end flush with one face of the tube and extending from the other face and being seated in the plate by expanding and rolling the... | 11/11/1980 |
| 4220028 | Method and device for producing tube bends Method of producing tube bends of a given diameter and substantially uniform wall thickness from a straight tube having a diameter smaller than the given diameter, which includes re-shaping at least one end of the straight tube with a work-tool to form ta... | 09/02/1980 |
