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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 8181498 | Method and apparatus for shaping a rim of a three-dimensionally arched sheet metal Method for shaping a rim of a three dimensionally arched sheet metal, wherein the sheet metal is placed on a female die provided with a chamfer which follows the contour of a peripheral edge of the rim, the rim spanning the chamfer, and a male roller die is rolled o... | 05/22/2012 |
| 7721578 | Opening curled portion of metal can and forming method thereof A method for configuration of an outwardly curled portion formed on an opening portion of a metal can, in which both inner and outer faces of a metal sheet forming at least around the opening portion are covered with a resin film, in which the curled portion formed ... | 05/25/2010 |
| 7536889 | Rotary rolling machine An improved rotary rolling or bead rolling machine capable of placing beads, crimps, flanges, turns, burrs, elbows, slits, offsets, collars, flats, or other deformations in sheet material. The machine provides a foot operated roller force and motor control and allow... | 05/26/2009 |
| 7353579 | Flange restoring device and method A method and a device for straightening out irregularities in a flange by pressing a roller against a first side of the flange while supporting an opposite side thereof to preserve the angle between the flange and the part when undergoing compression loading by way ... | 04/08/2008 |
| 7251974 | Method and forming machine for deforming a hollow workpiece The invention relates to a method and a forming apparatus for deforming a hollow workpiece having at least one open end, 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, ... | 08/07/2007 |
| 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 |
| 7174759 | Forming machine and method for deforming a hollow workpiece The invention relates to a forming machine at least provided with a clamping device for clamping a hollow workpiece having at least one open end and a first forming tool which can be placed into contact with the outer surface of the workpiece and with which the work... | 02/13/2007 |
| 7152445 | Method and forming machine for working a workpiece The 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 fix the workpiece, th... | 12/26/2006 |
| 7003998 | Apparatus for forming a flange at the end of a conduit Apparatus for shaping a conduit to form a radially outwardly projecting flange at an end thereof includes a holding fixture, a collar surrounding the conduit disposed in an opening in the holding fixture, rotation imparting structure engaging the collar for simultan... | 02/28/2006 |
| 6990841 | Method and apparatus for lean spin forming transition portions having various shapes A method and apparatus for spin forming a portion of a workpiece where the formed portion has a formed axis that is non-coaxial with the non-processed axis of the workpiece includes at least two rollers rotatable about a spin axis. Each one of the rollers is axially... | 01/31/2006 |
| 6960048 | Modular segmented retaining wall A modular retaining wall system uses a plurality of different sized masonry blocks to form uniform sized modules for constructing a segmented retaining wall. Each module has the same overall dimensions of height, width and depth, while the masonry blocks used to def... | 11/01/2005 |
| 6935152 | Orbiting roller groover for pipe An apparatus and method for forming grooves in a pipe for receiving mechanical pipe clamps are disclosed. The apparatus includes a holding fixture for securing the pipe and a carriage rotatably mounted on the holding fixture. Two arms are pivotably mounted on the ca... | 08/30/2005 |
| 6918278 | Pipe preparation tool adaptable for different diameter pipes A tool for preparing pipes for coupling using mechanical couplings is disclosed. The tool has a movable roller pivotally attached to a body, a tapered roller rotatably attached to the body and a plurality of tool rollers rotatably mounted on a carriage slidable with... | 07/19/2005 |
| 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 |
| 6672122 | Apparatus and method for conditioning the outer flanges of a vehicle wheel An apparatus adapted to condition the outer flanges of a vehicle wheel includes a main base assembly secured to a fixed surface, a lower tool assembly operatively supported by the main base assembly, at least one upper drive assembly operatively supported... | 01/06/2004 |
| 6606893 | Roll grooving apparatus Apparatus for roll grooving thin wall pipe comprises a housing supporting a drive roll and an arm pivotally mounted on the housing and supporting a grooving roll. A feed screw between the housing and arm provides for pivoting the arm to displace the groov... | 08/19/2003 |
| 6591651 | Sheet metal forming machine In order to improve a sheet metal forming machine comprising a machine frame, a first roller tool mounted on the machine frame for rotation about a first roller axis, a second roller tool which is rotatable about a second roller axis, interacts with the f... | 07/15/2003 |
| 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 |
| 6408664 | Hydraulic positioning assembly for cold rolling tubes A cold rolling apparatus includes a forming roll which applies a forming load to a tube when cold rolling the tube, and a hydraulic positioning assembly including a positioning roller disposable for initial contact with a tube surface and arranged to appl... | 06/25/2002 |
| 6311453 | Form pin clip For use in securing a concrete form board, the form pin of the invention includes a clip having first portion substantially in the shape of a cylinder to be forced onto one end of a steel bar driven into sand, shale or clay and of an inside diameter subst... | 11/06/2001 |
| 6067833 | Method and apparatus for forming an end portion of a cylindrical member A method and apparatus for forming an end portion of a cylindrical member or cylinder includes at least one roller supported on a main shaft to be radially moved to and from the main shaft. The cylinder is supported to position the central axis thereof on... | 05/30/2000 |
| 6041634 | Portable bead roller A machine for forming a bead on a tubular work piece includes a first circular die engageable with the inner surface of the tubular work piece and a second circular die engageable with the outer surface of the tubular work piece. The first die cooperative... | 03/28/2000 |
| 5570603 | Method and apparatus for cold rolling piping element connections having multiple outward steps An apparatus for cold rolling a piping element connection with multiple outward steps has first and second rollers, a driver for the second roller, and a positioning roller. The first roller rotates about a first axis, with first and second upper surfaces... | 11/05/1996 |
| 5167136 | Thread roll attachment Each of the two, pivotal, roll supporting arms of a thread rolling attachment has therethrough adjacent the end thereof remote from its pivotal axis a bore in which one end of a cylindrical pattern roll supporting shaft is adjustably secured. The axis of ... | 12/01/1992 |
| 4575289 | Apparatus for orienting the position of a machine tool carriage relative to a stationary machine part An apparatus for orienting the position of a machine tool carriage relative to a stationary machine part, which machine tool carriage is movable in a plane defined by orthogonally related X and Y axes. In a first embodiment, the carriage is freely movable... | 03/11/1986 |
| 4523446 | Machine for the deep slitting of the periphery of non planar discs used for providing wheels having a pneumatic tire Machine permitting a deep slitting in a periphery of non planar discs for obtaining wheels carrying a pneumatic tire, wherein the disc to be slit is driven in rotation on a floating support, that is a support which automatically compensates for flatness i... | 06/18/1985 |
| 4445352 | Rim former A rim forming apparatus, substantially comprising a frame having two superimposed drivable and substantially vertically slidable spindles for applying thereon rim forming tools or rolls, the lower spindle being movable by means of a hydraulic cylinder rel... | 05/01/1984 |
| 4359301 | Machine for the precision working, for example shaving, of tooth flanks A machine for precision working, for example shaving, of the tooth flanks of a toothed workpiece supported rotatably on a machine frame. A tool carrier carries a multi-toothed tool, for example a shaving cutter, and is supported substantially above the wo... | 11/16/1982 |
| 4175415 | Finishing tool A tool for deburring or finishing a workpiece is mounted for common reciprocatory movement with the wheelhead of a grinding machine. The tool, which is form of an elongated rod, is supported in a housing which is in turn pivoted about an axis transverse t... | 11/27/1979 |
| 3985012 | Apparatus for finish rolling bevel pinions and gears An improved apparatus for roll forming tooth profiles on workpieces is provided with an adjusting means for adjusting the root angle of a workpiece. The adjusting means is designed to withstand the large forces generated with equipment of this type and ca... | 10/12/1976 |
