| Patents for B21F 37 - Manufacture of rings from wire (337) |
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| 09/21/2006 | US20060207677 Machine for making steel hoop circumferential reinforcing elements |
| 09/19/2006 | US7108233 braided wire rings each having at a starting end of its wire, a first curled portion wound about the wire of the first turn and, at the terminal end of the wire, a second curled portion wound about the rope forming the wire ring. |
| 09/06/2006 | EP1402972B1 Method of producing grip rings for tube connectors and producing apparatus of grip rings for tube connectors |
| 08/30/2006 | EP1277993A4 Multipiece piston ring and methods and devices for the production thereof |
| 05/31/2006 | EP1662047A1 Method for the production of a ring for a retaining net, in particular for protection constructions against falling rocks or avalanches, and retaining net |
| 05/24/2006 | CN1775409A Automatic lead-wire-coil manufacturing equipment |
| 05/16/2006 | US7043951 Wire rod-forming machine |
| 03/29/2006 | CN1751873A Separator for hexagon bare tyre ring of tyre ring |
| 03/23/2006 | WO2006030815A1 Method and system for producing annular coaxial stranded bead cord |
| 02/01/2006 | CN1239314C Double-pulling double-ring winding machine set of tyre multikind cross section steel wire ring |
| 01/04/2006 | CN1714992A Method and device for producing grip ring of pipe joint and grip ring for pipe joint |
| 12/21/2005 | CN1232365C Grip ring metal wire material, method and device for producing same |
| 10/26/2005 | CN1224358C Keyring for connecting key to keychain |
| 09/21/2005 | CN2726925Y 轮胎钢丝圈 Tire bead |
| 09/21/2005 | CN1671540A Method and apparatus of manufacturing stranded bead wire |
| 08/24/2005 | CN2719448Y T-type three-shaft special rolling machine |
| 07/13/2005 | EP1552917A1 Method and apparatus for producing twisted bead wire |
| 02/10/2005 | US20050029408 Wire ring net for rocky wall barriers and method for making it |
| 02/09/2005 | EP1504828A1 Wire ring net for rocky wall barriers and method for making it |
| 01/12/2005 | CN1562560A Backing ring made from red copper in use for plasma arc welding sheet metal and fabricating method |
| 01/05/2005 | CN1559789A Double-pulling double-ring winding machine set of tyre multikind cross section steel wire ring |
| 12/29/2004 | CN2666584Y Machine for manufacturing rings from wire |
| 09/23/2004 | US20040182123 Grip ring metal wire material, method of producing such grip ring metal wire material and device for producng such grip ring metal wire material, and method of producing pipe coupling grip using metal wire material, device for producing such pipe coupling grip ring, and pipe coupling grip ring |
| 08/24/2004 | US6780260 Forming wire segment of shape memory alloy to given length proportional to desired ring size, annealing, roll flattening to desired thickness and width, slitting length of wire along centerline, opening slit, annealing opened slit on mandrel |
| 08/05/2004 | US20040148993 Wire rod-forming machine |
| 07/22/2004 | DE10225461B4 Hochtemperaturfestes Dichtelement sowie dessen Verwendung und Verfahren zu dessen Herstellung High-temperature-resistant sealing element and the use thereof and process for its preparation |
| 07/01/2004 | US20040123445 Method of producing polygonal ring-shaped machine parts having complex cross-section |
| 06/23/2004 | CN2621124Y Tyre multi-section traveller double-ring winding machine set |
| 06/23/2004 | CN1506178A Wire forming machinery |
| 04/21/2004 | CN1489955A Keyring |
| 03/31/2004 | EP1402972A1 Grip ring metal wire material,method of producing such grip ring metal wire material and device for producing such grip ring metal wire material,and method of producing pipe coupling grip ring using metal wire material,device for producing such pipe coupling grip ring |
| 03/25/2004 | DE10337063A1 Key-coupler for key-holder, has two closed rings formed by overlapping pair of circular portions, where portions are part of single spring wire, and connecting portion connects pair of circular portions |
| 03/18/2004 | US20040050125 Key-coupler for coupling key to key-holder |
| 03/04/2004 | WO2004018187A1 Method and apparatus for producing twisted bead wire |
| 02/26/2004 | DE19807133B4 Verfahren und Vorrichtung zum Herstellen von nicht-geschlossenen Ringen Method and apparatus for producing non-closed rings |
| 01/08/2004 | DE10225461A1 Hochtemperaturfestes Dichtelement sowie Verfahren zu dessen Herstellung High-temperature-resistant sealing element and method for its production |
| 12/31/2003 | CN1464803A Grip ring metal wire material, method of producing such grip metal wire material and device for producing such grip ring |
| 11/26/2003 | CN1458003A Double ring winding machine group for multiple section steel wire ring for tire |
| 07/02/2003 | CN2558630Y Hexagonal section tyre wire ring winder |
| 01/22/2003 | EP1277993A1 Multipiece piston ring and methods and devices for the production thereof |
| 01/16/2003 | WO2003004195A1 Grip ring metal wire material, method of producing such grip ring metal wire material and device for producing such grip ring metal wire material, and method of producing pipe coupling grip ring using metal wire material, device for producing such pipe coupling grip ring, and pipe coupling grip ring |
| 01/14/2003 | CA2101906C Method of forming a spacer used to space end to end piping |
| 11/13/2002 | EP1255623A1 Machine and method for helically winding a wire about a ring-shaped core |
| 08/28/2002 | CN1365897A Apparatus for making metallic wire binding parts |
| 07/23/2002 | US6422271 Apparatus and method for making clamp rings |
| 06/05/2002 | EP1211097A2 Device for the manufacture of wire binding elements for the binding of brochures of any format and thickness by means of comb binding |
| 06/05/2002 | EP1211000A2 Method for the segmental bending of wire binding elements |
| 04/11/2002 | WO2002028566A1 Apparatus and method for making clamp rings |
| 02/21/2002 | US20020020048 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 01/16/2002 | EP1171251A1 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 12/05/2001 | CN2463084Y Double-wire ring automatic forming machine |
| 10/31/2001 | EP1148958A1 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 10/25/2001 | US20010032359 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 08/23/2001 | WO2001060547A1 Machine and method for helically winding a wire about a ring-shape core |
| 07/19/2001 | WO2001051833A1 Multipiece piston ring and methods and devices for the production thereof |
| 06/05/2001 | US6240727 Manufacture of Nitinol rings for thermally responsive control of casing latch |
| 05/01/2001 | US6223574 Thin-walled ring-shaped member and method of manufacturing same |
| 11/16/2000 | WO2000067933A1 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 11/16/2000 | CA2334779A1 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 11/02/2000 | WO2000064610A1 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 11/02/2000 | CA2334633A1 Method and machine for the manufacture of metallic frames for inner spring mattresses |
| 08/22/2000 | US6105646 Metal tire bead |
| 01/20/2000 | DE19831189A1 Verfahren zur Herstellung von Blechringen A process for the production of sheet-metal rings |
| 01/19/2000 | EP0972588A2 Method for producing metal rings |
| 12/02/1999 | DE19807133A1 Fabrication method for open rings, e.g. spring rings, etc. |
| 11/25/1999 | DE19922681A1 Continuous wire forming appliance |
| 07/13/1999 | CA2028480C Process and apparatus for the manufacture of an automotive tire bead |
| 11/25/1998 | EP0879661A1 Process of manufacture of a conical, annular workpiece and workpiece obtained by said process |
| 11/19/1998 | WO1998051939A1 Thin-walled ring-shaped member and method of manufacturing same |
| 11/03/1998 | US5829490 Apparatus for making a wreath ring |
| 10/15/1998 | WO1998045067A1 Method for the production of a lock ring and lock ring thus produced |
| 10/15/1998 | DE19714982A1 Verfahren zur Herstellung eines Verschlußringes mit einer umlaufenden Siegelfläche zum Aufsiegeln einer Verschlußmembran und einem Bördelrand zum Aufbringen des Verschlußringes auf den Rand eines Gebindes sowie nach dem Verfahren hergestellter Ring A process for producing a closure ring having a circumferential sealing surface for sealing a closure membrane and a flared flange for application of the closure ring on the rim of a container, as well as by the process produced ring |
| 10/13/1998 | US5820717 Metal tire bead manufacturing method |
| 09/22/1998 | US5809820 Spring washer and method for making the same |
| 04/08/1998 | EP0834393A2 Metal tyre bead and relative manufacturing method |
| 03/11/1998 | EP0828009A1 Steel tire cord with high tensile strength |
| 10/14/1997 | US5676008 Apparatus and method of forming needle blanks from wire stock |
| 01/14/1997 | US5592809 Link forming and joining apparatus |
| 11/06/1996 | EP0656818B1 Method and apparatus for cutting coiled wire |
| 09/17/1996 | US5555758 Method and apparatus for cutting coiled wire |
| 03/05/1996 | CA2074922C Method of manufacturing a washer |
| 06/14/1995 | EP0656818A1 Method and apparatus for cutting coiled wire. |
| 05/09/1995 | US5412933 Automatic link forming apparatus |
| 11/23/1994 | CN1095320A Automatic link forming apparatus |
| 11/22/1994 | CA1333141C Brass-coated steel elements having improved rubber adhesion properties |
| 09/21/1994 | CN2177546Y Short driving chain hobbing type shaper for spring washer |
| 06/15/1994 | CN1025011C Production of washer |
| 03/23/1994 | EP0588590A1 Automatic link forming apparatus |
| 03/17/1994 | WO1994005445A1 Method and apparatus for cutting coiled wire |
| 11/09/1993 | US5259819 Method of manufacturing a washer |
| 10/19/1993 | US5253507 Method of forming a spacer used to space end to end piping |
| 07/20/1993 | US5228942 Band winding apparatus for forming a bead core |
| 05/05/1993 | CN1071610A Washer making method |
| 04/14/1993 | EP0537034A1 Method of manufacturing a washer |
| 03/24/1993 | EP0532778A1 A band winding apparatus for forming a bead core |
| 10/07/1992 | CN2117960U Metallic wire winded resilient ring series for hole or axle |
| 03/31/1992 | US5099892 Process and apparatus for the manufacture of an automotive tire bead |
| 01/29/1992 | CN1015332B Fabricating method of spring washer |
| 10/15/1991 | CA1290559C Split ring springs for snap fasteners and method of manufacturing the same |
| 07/11/1991 | DE4100122A1 Graphite ring seal mfr. by automatic operation - uses winding spindle coaxial to press section to wind graphite strip for compression |