| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 072048000 | BY TOOL-COUPLE PRESSING TOGETHER ADJACENT SURFACE PORTIONS OF SAME WORK (E.G., TUBE-SEAMER) | 6 |
| 20120174642 | MULTI-ROLL MANDREL MILL AND METHOD OF PRODUCING SEAMLESS TUBES - A multi-roll mandrel mill for compacting of roll chock portions has a plurality of grooved roll bodies as a roll pass which performs a reduction rolling of a shell, and a plurality of roll stands each having backup rolls for driving the grooved roll bodies, wherein bearings are internally contained in the grooved roll body. A multi-roll mandrel mill for optimizing the design of roll chock portions for every setup has a plurality of grooved roll bodies as a roll pass which performs the reduction rolling of a shell and a plurality of roll stands each having roll shafts and roll chock portions for driving the grooved roll bodies. According to a tube-making setup of the mandrel mill, at least one of either or both of the roll shafts and the roll chock portions is replaced with a part(s) having a different shape(s) in addition to the grooved roll bodies. | 07-12-2012 |
| 072049000 | To form helically-seamed tube | 3 |
| 20090272164 | Tube making machine with diameter control and method - A spiral pipe forming system which includes automatic diameter or dimension sensing and control. | 11-05-2009 |
| 20090320542 | Tube making machine with diameter control and method - A spiral pipe forming system and method which include automatic diameter or dimension sensing and correction. | 12-31-2009 |
| 072050000 | Using roller conforming to seam contour | 1 |
| 20090165518 | Apparatus for and Method of Manufacturing Helically Wound Structures - An apparatus ( | 07-02-2009 |
| 072051000 | To form longitudinally-seamed tube | 2 |
| 20120073343 | METHOD FOR PRODUCING METAL SEALING ELEMENTS - A method for producing metallic sealing and stopper elements for flat gaskets by winding or rolling at least one metallic, sheet metal- or foil-like base body to obtain a tube as an intermediate product, bringing the mutually opposing end regions or parts, or the entire contact surface of the tube, into operative connection with each other by way of bonding, non-positive or positive joining techniques, or combinations thereof, contouring the tube or tube sections generated therefrom at least in some regions, and severing at least one annular or disk-shaped component in order to generate a sealing or stopper element in the contoured region of the tube or tube section. | 03-29-2012 |
| 20120186316 | APPARATUS FOR CLOSING PITTSBURGH SEAMS ASSOCIATED WITH DUCT ASSEMBLIES AND OTHER BOX-SHAPED MEMBERS - A vertical Pittsburgh seam closing apparatus having a base supporting surface for positioning a duct section thereon in a vertical orientation, a track mechanism for moving a carriage assembly which holds seam forming members used to close a Pittsburgh seam, a pair of upper and lower guide members for guiding the duct section into a proper position, and upper and lower clamping members movable between an unclamped position and a clamped position wherein each clamping member is positioned inside the duct section and adjacent the inside portion of the Pittsburgh seam to be closed, the upper guide members and clamping member being selectively movable and adjustable for accommodating different duct section lengths. In one embodiment, the seam forming assembly includes a pair of roller members mounted in vertical arrangement to each other, one roller member being V-shaped in configuration and the other roller member being substantially cylindrical in shape. | 07-26-2012 |
