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| Number | Title | Issue Date |
| 8141402 | Pretension loading method for power transmission chain and pretension loading apparatus There is provided a pretension loading method for a power transmission chain, in which a chain with an endless loop shape having a plurality of laminated link plates bendably connected to each other by pin members is wound around a plurality of rollers and the chain... | 03/27/2012 |
| 7328597 | Circumferential length correcting method and apparatus for metal ring A circumferential length correcting method for a metal ring including: a circumferential length measuring step of passing the metal ring around a driving roller and a driven roller, displacing the driving roller and the driven roller away from each other, and measur... | 02/12/2008 |
| 7294077 | CVT belt with chromium nitride coating A belt for a continuously variable transmission (CVT) includes at least one continuous band supported against a contact face in a slot formed in each of a plurality of transverse elements of the CVT. The band has a surface positioned against the contact face. This s... | 11/13/2007 |
| 7290420 | Rolling apparatus and rolling method A rolling apparatus includes a pair of a small rolling roller and a large rolling roller which hold a ring with the ring being sandwiched therebetween, and which roll the ring, and a tension roller; a temperature sensor which measures a temperature of the ring befor... | 11/06/2007 |
| 7204005 | Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt A manufacturing method of an endless metal belt having metal rings built up and differing in circumference, includes the following steps of: a first circumference correction step of expanding each of the metal rings; and a second circumference correction step of exp... | 04/17/2007 |
| 7168279 | Method of manufacturing metal ring for endless metal belt A metal ring with smaller stress concentration is manufactured, and the manufacture and maintenance of a rolling roller for transferring a mesh-shaped unevenness to the metal ring is facilitated. A mesh-like unevenness 8 is formed to the surface of an inner c... | 01/30/2007 |
| 7140218 | Rolling apparatus and rolling method A rolling apparatus includes a pair of small rolling roller and a large rolling roller which hold a ring with the ring being sandwiched therebetween, and which roll the ring, and a tension roller; a temperature sensor which measures a temperature of the ring before ... | 11/28/2006 |
| 7047781 | Sheet metal member having an annular peripheral wall and a method of thickening an annular peripheral wall of the sheet metal member The present invention relates to a sheet metal member having an annular peripheral wall and a method of thickening an annular peripheral wall of the sheet metal member. The thickness of the annular peripheral wall is increased to be 2 or more times or 3 or more time... | 05/23/2006 |
| 7013691 | Peripheral length adjusting apparatus and peripheral length adjusting method for endless metallic ring In a peripheral length adjusting apparatus and a peripheral length adjusting method for an endless metallic ring, an endless metallic ring is wound on plural rollers, and an interval between the plural rollers is enlarged such that the endless metallic ring is stret... | 03/21/2006 |
| 6910587 | Gumbo separator methods and apparatuses A separator system for separating first material from second material, in one aspect for separating gumbo from drilling fluid, a combination of the first material and second material introducible to the separator system, the separator system having a screen conveyor... | 06/28/2005 |
| 6907762 | Method and forming machine for deforming a hollow workpiece The invention relates to a method and a forming apparatus for deforming a hollow tubular workpiece, wherein the workpiece is clamped down in a clamping device, a first forming tool is placed into contact with the outer surface of the workpiece, the tool is rotated a... | 06/21/2005 |
| 6898956 | Metal ring inputting and outputting device A metal ring loading and unloading apparatus is capable of loading and unloading a metal ring quickly and highly accurately for increased efficiency. The metal ring loading and unloading apparatus has a moving unit 41 slidably movable along a rail 48 w... | 05/31/2005 |
| 6868606 | Method and apparatus for making a rotation-symmetrical gear member In a method of making a rotation-symmetrical gear member, an outer edge of a circular blank is shaped to form a concentric thickened area which extends in axial direction to thereby realize a ring structure. A remaining area of the circular blank is then shaped into... | 03/22/2005 |
| 6854310 | Device for correcting circumferential length of metal ring An apparatus for correcting the circumferential length of a metal ring has a drive roller 2 and a driven roller 3 positionable closely to each other for training a metal ring W therearound, and a correcting roller 4 disposed between the drive ro... | 02/15/2005 |
| 6843090 | Rolling device for ring A rolling apparatus is capable of rolling a metal ring to an accurate circumferential length and preventing the metal ring from dropping off. The rolling apparatus includes a metal ring support assembly having tension rollers 2a, 2b for s... | 01/18/2005 |
| 6568233 | Method and apparatus of diametrically expanding metal shafts Method and apparatus for diametrically expanding a desired part of a metal shaft which can be a rod or a pipe, wherein the apparatus includes a driving rotary section (4) and a driven rotary section (6) arranged at a predetermined distance (D), each of th... | 05/27/2003 |
| 6546773 | Can manufacturing apparatus, can manufacturing method, and can A manufacturing apparatus for manufacturing a can having a can body including a dome section and an annular projection. The dome section is formed on a bottom of the can and is recessed inwardly of the can body. The annular projection is formed around a p... | 04/15/2003 |
| 6318140 | Method of manufacturing laminated ring and apparatus for measuring circumferential length difference of ring in such method A laminated ring is manufactured by severing a cylindrical drum, which comprises a sheet of maraging steel with welded opposite ends, into a plurality of rings of predetermined width, rolling the rings to a predetermined target circumferential length, cor... | 11/20/2001 |
| 6223576 | Method of thickening peripheral portion of circular plate blank by holding blank in pressing contact with bottom surface of forming groove formed in roller die A method of thickening a peripheral portion of a circular plate blank, wherein the blank is held on a jig with its peripheral portion extending radially outwardly from the outer circumferential surface of the jig, and rotated such that the outer circumfer... | 05/01/2001 |
| 5996387 | Method and apparatus for pre-stretching continuous chain-link drilling mud separation belt A wide endless-loop chain-link drilling mud separation belt formed of a plurality of laterally adjacent jointed links hinged together by transverse rods is pre-stretched prior to its installation and use on a drilling mud separation unit to prevent subseq... | 12/07/1999 |
| 5996386 | Equipment and method for edging and tapering cylindrical body cans The edging or tapering equipment requires that each of the two shaped pads, for the plastic deformation of the two edges of a respective can body, be positioned so that the longitudinal axis of the pads lies at an angle to the longitudinal axis of the can... | 12/07/1999 |
| 5857369 | Method for fabricating light weight pipe connectors A lightweight pipe connector fabrication method for rolling clamping groove for each end of metal plate made semi-finished pipe connector of various forms by using a specified groove rolling machine, the groove rolling machine including a rolling unit and... | 01/12/1999 |
| 5768763 | Method and apparatus for grooving on rotor Grooves are formed on a rotor by rotor holders for holding a rotor at both ends of a rotary shaft thereof, a groove rolling die for forming grooves in the outer surfaces of the field cores of the rotor, and a holder die having a groove pattern in conformi... | 06/23/1998 |
| 5640868 | Apparatus and method for work hardening an endless belt for use in a belt caster An endless belt work hardening apparatus including a pair of rotatable supporting rolls, a work roll disposed between the supporting rolls and a pair of tension rolls having disposed therebetween the work roll. The endless belt is positioned in the appara... | 06/24/1997 |
| 5571541 | Device for reconditioning tubes, particularly cardboard tubes The object of the present invention is to recondition cardboard or similar tubes with deformed parts, notably at the ends, whilst avoiding the usual milling techniques and without removing any material. The deformed parts of each tube (1) are recalibrated... | 11/05/1996 |
| 5533373 | Method and apparatus for making shaped cans A method and apparatus for shaping cans entails placing an inflatable flexible-walled mandrel inside a drawn can body, inflating the mandrel, rotating the can body and the inflated mandrel, applying a forming tool, such as a rubber-surfaced roller, to the... | 07/09/1996 |
| 5396787 | Method of producing fluid-chamber component elements To form a seal ring groove in the outer peripheral surface of a steel plate having a circular contour, the present invention provides a method of producing fluid-chamber component elements by which the peripheral portion of the steel plate held by and bet... | 03/14/1995 |
| 5159825 | Dedimpling apparatus A dedimpler apparatus is provided in which tubes are serially introduced into a dedimpler machine which removes constrictions or dimples from the tube wall at the cut ends thereof to form cylindrically true ends, and then the tubes are automatically trans... | 11/03/1992 |
| 5133204 | Apparatus for producing sunken shapes on the outer circumference of rotationally symmetrical sheet-metal workpieces and a method for producing the same Apparatus for the production of sunken shapes in the form of regular or irregular cogs and/or markings on the outer circumference of rotationally symmetrical sheet-metal workpieces. The apparatus includes at least one rotatable spindle with a workpiece ho... | 07/28/1992 |
| 5103663 | Dedimpler and deburring apparatus A combination dedimpler and deburring apparatus is provided in which tubes are serially introduced into a dedimpler machine which removes constrictions or dimples from the tube wall at the cut ends thereof to form cylindrically true ends, and then the tub... | 04/14/1992 |
| 5095726 | Dedimpler and deburring apparatus A combination dedimpler and deburring apparatus is provided in which tubes are serially introduced into a dedimpler machine which removes constrictions or dimples from the tube wall at the cut ends thereof to form cylindrically true ends, and then the tub... | 03/17/1992 |
| 5072509 | Method of manufacturing a belt pulley Method of manufacturing a belt pulley from a metal disk, e.g. a multiple-V-belt pulley, toothed belt pulley, flat belt pulley, etc., having a hub and an area that is provided with a profile which is basically hollow cylindrical and has a smooth or crowned... | 12/17/1991 |
| 4921037 | Method and apparatus for introducing differential stresses in endless flexible metallic casting belts for enhancing belt performance in continuous metal casting machines The wide, thin, revolvable, flexible, metallic casting belts are made to incorporate differential patterns of residual internal longitudinal tensile and compressive stresses. The two marginal areas are residually longitudinally stretched more than the mai... | 05/01/1990 |
| 4885924 | Method of forming containers In a method of reshaping a container (1) having side wall (2) and a bottom wall (3), the container is rotated by support means (11, 12) while a roll (13) is applied thereto and moved towards the container axis. The bottom wall (3) comprises a central pane... | 12/12/1989 |
| 4884427 | Method of producing helical internal gear A method of forming a helical internal gear by cold work, wherein a hollow blank is fitted onto a die on a mandrel, which is provided on an outer periphery thereof with a helical tooth profile and, while the blank is clamped and held in both axial directi... | 12/05/1989 |
| 4862719 | Cylinder flanging machines An integral outwardly extending transverse annular flange is formed on one or both extremities of a previously formed cylinder, circumferentially spaced circular openings are then punched in the one or both flanges. An adjustable expansible and freely rot... | 09/05/1989 |
| 4757701 | Six stage rolling apparatus for forming endless metal belts A six stage rolling machine for forming endless metal belts from tubular workpieces comprises, a first roll disposed within the workpiece, a second roll disposed outside the workpiece and constitutes, in cooperation with the first roll, a pair of work rol... | 07/19/1988 |
| 4689980 | Method for snap ring forming and grooving A method for simultaneously forming splines and an annular groove in a metal piece having a central portion and ends on each side thereof, the method including the steps of forming a substantially U-shaped annular recess (56) along the central portion of ... | 09/01/1987 |
| 4688407 | Method and apparatus for radial expansion of rings In a method for the radial expansion of rings, in particular by means of rolling tools, it is provided in accordance with the invention that the radial surfaces and the end faces of the ring that is to be machined are machined in alternation using the sam... | 08/25/1987 |
| 4672833 | Method and apparatus for the two-step rolling of rings Method and apparatus are provided for the two-step rolling of predominantly profiled rings, for example, anti-friction bearing rings, with diameter enlargement in two rolling steps in one working sequence for the considerable reduction of the stress on th... | 06/16/1987 |
