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| Number | Title | Issue Date |
| 7404308 | Apparatus for producing helically corrugated metal pipe and related method A pipe manufacturing system and method for producing helically corrugated metal pipe is provided. The system and method utilize controlled profile formation. ... | 07/29/2008 |
| 7310984 | Forming apparatus for precambered metal sections A forming apparatus (50) includes a roll former (51) operative to roll form a metal strip (100) to form a profiled metal section (10) of generally C section profile including a pan (12) and a pair of upstanding edge margins (14 | 12/25/2007 |
| 7279016 | Fuel cell bipolar separator plate and current collector assembly and method of manufacture A fuel cell bipolar separator plate of variable length is formed from a sheet having a fixed width. The sheet is passed through a tool a predetermined distance and a pattern of ribs is formed on a central portion of the sheet with the tool to define a segment along ... | 10/09/2007 |
| 7272968 | Device for shaping corrugated fin The configuration comprises a shaping member 3 having a substantially rectangular shape and shaping the inner surface side of a bent portion 1b, a worm gear 2 slidably linked with the shaping member 3 and gradually reducing the dis... | 09/25/2007 |
| 7241126 | Apparatus for imparting protusions and recesses and product An apparatus imparts concaves/convexes to a sheet-like object by passing the sheet-like object between a pair of rollers facing each other. At least one of the rollers is a roller a surface of which is formed by laminating a single or a plurality of circular plates ... | 07/10/2007 |
| 7117936 | Tube for heat exchanger In a tube (4) for a heat exchanger comprising a flat pipe (16) whose both ends are opened and in which a flow path (15) for a heat exchanging medium is formed, and an inner fin (17) arranged in the flow path (15), wherein said flat... | 10/10/2006 |
| 7115089 | Technology for continuous folding of sheet materials A machine and method for the continuous folding of sheet material into different three-dimensional patterns is featured. The innovative machine and method folds sheet material by force converging the sheet to a final stage that imparts a final fold or pattern. Uniqu... | 10/03/2006 |
| 6928847 | Roll forming system for forming flanges in strip material A V-shaped metal strip has a U-shaped bottom having U-shaped inside and outside surfaces. Only the U-shaped inside surface is formed with a plurality of fold lines extending in a longitudinal direction of the strip and reducing the influence of springback. The fold ... | 08/16/2005 |
| 6711803 | Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member The present invention enables to firmly assemble a steel-frame structure. To form a steel-frame structure or to join two steel members being reinforcing members thereof, a slip-proof surface having one or plural concentric higher parts and grooves is formed on the j... | 03/30/2004 |
| 6453711 | Flat turbulator for a tube and method of making same A tube and turbulator and method of making the same for a heat exchanger including a base, a top spaced from and opposing the base, a first side interposed between the base and the top along one side thereof, and a second side interposed between the base ... | 09/24/2002 |
| 6289707 | Apparatus for manufacturing roofing or cladding panels An apparatus for manufacturing a roofing panel has been accomplished such that the desired panel version can be produced by altering the infeed point of the panel (6) on a feeding table (5). The apparatus can be utilized in the manufacture of roofing pane... | 09/18/2001 |
| 6138354 | Method of manufacturing a corrugated plate by rolling for use as an inner fin of a heat exchanger A metallic corrugated plate applying to a cooling inner fin of a heat exchanger, wherein a bending angle .THETA. of an end bent ridge portion is smaller than bending angle θ of the other bent ridge portions. Thus, in case the bending angle .THETA. become... | 10/31/2000 |
| 5918497 | Metalworking method wherein formed configuration locates blank A metalworking iterative method of cold-working blanks into configurations having contiguously repeated predetermined forms wherein an advance-worked form functions to locate a succeeding form. A first portion of a blank is squeezed into a predetermined f... | 07/06/1999 |
| 5394722 | Apparatus for forming profiles on strip materials A roll forming device receives a continuous elongated flat sheet of metal to form selected profiles along at least one longitudinal margin thereof. The roll forming device comprises a drive assembly, located within the apparatus frame which engages the el... | 03/07/1995 |
| 5295303 | Method of making a corrugated fin The strip 2 is inserted between forming rollers 1a and 1b so that fins 3 are formed on the strip 2. The forming rollers 1a 1b have a line of protrusion protruding radially on the periphery thereof and the protrusion of one roller mates with protrusion of ... | 03/22/1994 |
| 5259228 | Rolling mill A rolling mill comprising a plurality of roll passes for progressively forming a workpiece to a desired final cross-sectional shape wherein each roll pass comprises a pair of rotatable mountings, the mountings being disposed on opposite sides of a pass li... | 11/09/1993 |
| 5229055 | Method and apparatus of producing hollow profiles from multilayer starting material Hollow profile elements are formed by shaping a starting workpiece that consists of multiple layers of a material having a large width-to-thickness ratio, e.g., woven fabrics or laid materials. The layers are joined by seams to define elongated pockets or... | 07/20/1993 |
| 5109688 | Rolling mill A rolling mill comprising a plurality of roll passes for progressively forming a workpiece to a desired final cross-sectional shape wherein each roll pass comprises a pair of rotatable mountings, the mountings being disposed on opposite sides of a pass li... | 05/05/1992 |
| 5056348 | Method of making a profiled sheet metal building unit An improved cold formed, sheet metal profiled building unit and method of making the same are disclosed. The building unit incorporates at least one longitudinal stiffening rib in a longitudinal flat region of the type having a tendency to buckle when sub... | 10/15/1991 |
| 4986105 | Machine for corrugating sheet metal or the like A machine for corrugating sheet metal or the like comprises a plurality of successive working stations each provided with upper and lower rotatable corrugating devices adapted to jointly provide corrugations of successively increasing depth in a metal she... | 01/22/1991 |
| 4969346 | Apparatus for producing cold roll-formed structures A cold-forming method is disclosed for thinning localized, longitudinally extending portions of sheet metal by lateral shear deformation without any substantial longitudinal deformation. With such method, it is possible to produce elongated members which ... | 11/13/1990 |
| 4962622 | Profiled sheet metal building unit and method for making the same An improved cold formed, sheet metal profiled building unit and method of making the same are disclosed. The building unit incorporates at least one longitudinal stiffening rib in a longitudinal flat region of the type having a tendency to buckle when sub... | 10/16/1990 |
| 4959986 | Apparatus for cutting a wide sheet of metal material into a plurality of narrow strips A machine for cutting a relatively wide sheet of material into a plurality of relatively narrow strips to reduce bowing and camber in the cut strips is disclosed. The machine supports and moves the material along a path defined through the machine. The ma... | 10/02/1990 |
| 4876837 | Corner bead structure A drywall corner bead providing a rounded nose and two mounting flanges extending from opposite sides of the nose is formed from a strip of galvanized metal of uniform thickness. The two flanges are provided with three discrete longitudinally extending ba... | 10/31/1989 |
| 4875354 | Machine for adjustable longitudinal corrugating of sheet materials A machine for adjustable longitudinal corrugating of sheet materials, particularly of metal with stepwise folding/bending over free-running rollers and counter-rollers, so that alternating longitudinal convex and concave corrugations are formed. At each p... | 10/24/1989 |
| 4862666 | Profiled sheet for building purposes The invention relates to a profiled sheet for building purposes, especially roofing and facade sheet, the sheet having a normal profiling and having in addition, at least in certain sections, a corrugated microprofiling deviating from the normal profiling... | 09/05/1989 |
| 4845970 | Process and apparatus for regulating the synchronization of a pair of rolls Two rolls are supported laterally in bearings in two pairs of side-by-side members with the members being supported by a frame. Adjustment of synchronization and registration is accomplished by adjusting the relative positions of the side-by-side members ... | 07/11/1989 |
| 4791800 | Roll forming process and apparatus for making ribs in strip material A roll forming process is described wherein longitudinal areas of curvature are formed in strip material between longitudinal areas of narrower width, the areas of curvature being bowed downwardly from the center toward the longitudinal flat areas. As the... | 12/20/1988 |
| 4770018 | Method for producing cold roll-formed structures A cold-forming method is disclosed for thinning localized, longitudinally extending portions of sheet metal by lateral shear deformation without any substantial longitudinal deformation. With such method, it is possible to produce elongated members which ... | 09/13/1988 |
| 4689261 | Rounded corrugated sheet and method and apparatus for its manufacture The present invention relates to rounded corrugated sheeting (4) whose profile exhibits crest portions (5), flanks (6), and bottom portions (7). The crest portions (5) are located on the concave side of the rounded sheet and are provided with grooves form... | 08/25/1987 |
| 4580388 | Angled profile In a lightweight longitudinal angled section, particularly a cover-carrying profile, which includes two legs spaced from one another extending along the longitudinal direction, wherein a longitudinal bar connects the legs, and each leg is formed with stif... | 04/08/1986 |
| 4531270 | Method for the manufacture of metal vanes for turbomachinery To make vane airfoils for an axial flow compressor metal strip is first contour rolled to a cross section comprised of two opposing airfoils separated by a center rib, where one of the faces of the strip is kept planar. The rib is used to guide the strip ... | 07/30/1985 |
| 4526024 | Apparatus for forming elongated sheet metal panels Apparatus for forming a flat metal sheet into a panel having a central region of deep corrugations and a marginal edge which is either uncorrugated or has longitudinal or light traverse corrugations therein. A corrugation roll assembly forms the corrugate... | 07/02/1985 |
| 4455855 | Forming rolls of pipe-producing apparatus Forming rolls of a tube-producing apparatus comprise an upper roll having two identical roll parts supported at spaced-apart positions on a roll shaft, each roll part having a rounded outer circumferential working surface which, as viewed in section taken... | 06/26/1984 |
| 4411146 | Method and apparatus for the straightening and stiffening of starting sheets in electrolytic refining plants Starting sheets are straightened and stiffened in electrolytic refining plants by shaping the same predetermined areas of the starting sheet surfaces once or several times during successive shaping stages in such a manner that the elasticity range of the ... | 10/25/1983 |
| 4317350 | Corrugated plate having variable material thickness and method for making same A corrugated plate is disclosed which has trapezoidal corrugations defined by alternating, side by side, relatively thick corrugation peaks and corrugation troughs and relatively thin, inclined corrugation sides which interconnect edges of adjoining peaks... | 03/02/1982 |
| 4295353 | Mill stand for forming discontinuous longitudinal deformations in sheet metal The mill stand comprises forming rolls, which have congruent forming elements, mounted on a stand frame member in such a way that one of the forming rolls is adapted for a vertical reverse motion. This forming roll is connected with a hydraulic cylinder p... | 10/20/1981 |
| 4269055 | Large profile sheet metal corrugator A machine for forming corrugated plate from a flat sheet defined by a plurality of serially arranged corrugating stands. At least one stand has cooperating corrugating rolls defined by a plurality of disc shaped dies which, during corrugating, are rotated... | 05/26/1981 |
| 4265103 | Relating to cold sheet metal roll forming apparatus A cold sheet metal forming apparatus in which the forming rolls are held at each end by bearing housings in each case held by screw-threaded rods engaging the housings and being secured directly to a main supporting frame. Such an arrangement leaves addit... | 05/05/1981 |
| 4241146 | Corrugated plate having variable material thickness and method for making same A corrugated plate is disclosed which has trapezoidal corrugations defined by alternating, side by side, relatively thick corrugation peaks and corrugation troughs and relatively thin, inclined corrugation sides which interconnect edges of adjoining peaks... | 12/23/1980 |
