| Patents for B21F 35 - Making springs from wire (1,103) |
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| 02/06/2007 | US7172153 Wire guide for a wire processing machine, in particular for a spring manufacturing machine |
| 01/30/2007 | US7168117 Multi-stranded coil spring |
| 01/24/2007 | EP1461172B1 Two wire spring making machine and method |
| 01/24/2007 | CN1899721A Full function spring press |
| 01/17/2007 | CN2858111Y Cutting device for pocket spring |
| 01/17/2007 | CN2858108Y Line-spring manufacture machine |
| 01/17/2007 | CN1898614A Balance wheel, balance spring and other components and assemblies for a mechanical oscillator system, and methods of manufacture |
| 12/27/2006 | CN2850756Y Spring clamping and knotting device for automatic spring coiling machine |
| 12/21/2006 | DE102005028484A1 Cylinder spring, especially for piezo electric multi-layer actuators, is shaped within a hollow cylinder where inserted pins move the spring arms into shape while a cylinder is rotated against a lower holder |
| 12/20/2006 | CN2848412Y Spring knotting mechanism of full automatic spring coiling machine |
| 12/20/2006 | CN2848411Y Knotting spring clamping mechanism of full automatic spring coiling machine |
| 12/20/2006 | CN2848410Y Spring beating device of full automatic spring coiling machine |
| 12/12/2006 | US7146731 Snapping and hinging arrangements, watches and associated methods |
| 12/06/2006 | CN1875122A Stainless steel wire, spring, and method for producing spring |
| 12/05/2006 | US7143620 Spring manufacturing apparatus and driving force transmitting component mounted on the apparatus |
| 12/05/2006 | CA2318388C Spring winding automatic machine |
| 11/29/2006 | CN2841191Y Stringed spring micro-regulation mechanism for automatic net-stringing machine |
| 11/29/2006 | CN2841190Y Compressing mechanism for bagged spring |
| 11/29/2006 | CN2841189Y Forming and delivering mechanism for bagged bet-net |
| 11/22/2006 | CN1285430C Two wire spring making machine and method |
| 11/14/2006 | US7134305 Wire feeder driving mechanism for spring manufacturing machine |
| 11/01/2006 | CN2832350Y Spring forming machine |
| 11/01/2006 | CN2832349Y Screw pitch control mechanism structural improvement of spring forming machine |
| 09/19/2006 | US7107806 Spring manufacturing machine |
| 09/07/2006 | US20060196242 Wire rod cutting apparatus of spring manufacturing machine |
| 08/30/2006 | EP1277993A4 Multipiece piston ring and methods and devices for the production thereof |
| 08/16/2006 | EP1690955A1 Stainless steel wire, spring, and method for producing spring |
| 08/08/2006 | US7086425 Device for orienting springs |
| 07/25/2006 | US7080537 Spring manufacturing machine |
| 07/12/2006 | EP1678562A2 Balance wheel, balance spring and other components and assemblies for a mechanical oscillator system and methods of manufacture |
| 06/29/2006 | DE10134826B4 Drahtzuführung in einer Federherstellvorrichtung Wire feed in a Federherstellvorrichtung |
| 06/28/2006 | EP1599683A4 Multi-stranded coil spring |
| 06/28/2006 | CN1792495A Clamping knotter for spring of fully automatic spring coiling machine |
| 06/21/2006 | CN1788879A Knotting spring clamping mechanism of full-automatic spring-coiling machine |
| 06/14/2006 | CN1785548A Spring knotting mechanism of full automatic spring coiling machine |
| 06/14/2006 | CN1785547A Spring beating device of full automatic spring coiling machine |
| 06/06/2006 | US7055356 Wire rod cutting apparatus of spring manufacturing machine |
| 06/06/2006 | US7055244 winding a wire into a coil spring formed of a plurality of rings wherein having a constant strain rate; forming speed controlled so that minimum work hardening occurs and dynamic strain aging is reduced |
| 05/25/2006 | US20060107511 Methods and apparatus for centering spring reactive forces |
| 05/16/2006 | CA2215019C Mattress innerspring structure having coaxial coil units |
| 05/03/2006 | CN2776593Y Cam block for spring machine and spring machine containing said cam block |
| 04/19/2006 | CN2772677Y Automatic adapter of circular spring |
| 04/11/2006 | US7024901 Wire spring forming apparatus |
| 03/29/2006 | CN1751822A Method for mfg. circular evolvent vortex flexible spring |
| 03/29/2006 | CN1247344C Wire spring shaping apparatus |
| 03/22/2006 | EP1637251A1 Wire feeder driving mechanism for spring manufacturing machine |
| 03/16/2006 | US20060053853 Wire feeder driving mechanism for spring manufacturing machine |
| 03/08/2006 | CN1743702A Thread spool driving structure for spring machine |
| 01/17/2006 | US6986203 Manufacturing method for a composite coil spring |
| 01/04/2006 | CN2749601Y Input material length control cam for mattress spring machine |
| 12/15/2005 | DE10134828B4 Federherstellvorrichtung zum Herstellen von Federn mit verschiedenen Formen Federherstellvorrichtung for the manufacture of springs with different shapes |
| 11/30/2005 | EP1599683A2 Multi-stranded coil spring |
| 11/30/2005 | EP1461172A4 Two wire spring making machine and method |
| 11/30/2005 | EP1439924A4 Multiple wire feed for spring coiling machine and method |
| 11/30/2005 | CN1703290A Multiple wire feed for spring coiling machine and method |
| 11/03/2005 | US20050241720 Device for orienting springs |
| 10/13/2005 | WO2004074706A3 Multi-stranded coil spring |
| 09/29/2005 | US20050210676 Manufacturing method for a composite coil spring |
| 09/22/2005 | US20050204797 Wire guide for a wire processing machine, in particular for a spring manufacturing machine |
| 09/22/2005 | US20050204794 Method for producing an end lug of a spring member formed of a strand of wire, and apparatus for manufacturing same |
| 09/22/2005 | DE102004005427B3 Wire guide device, e.g. for making springs, has axes guided in long holes, longitudinal center lines of which are not parallel to each other |
| 09/21/2005 | EP1577033A1 Method of manufacturing an eyelet at the end of a spring body formed of wire and corresponding device |
| 09/21/2005 | EP1577032A1 Wire guide for a wire processing machine, in particular a spring manufacturing machine |
| 09/14/2005 | CN2724878Y Wire forming mechanism with tool changing device |
| 09/07/2005 | CN2723074Y Parallel double torsional spring winder |
| 08/16/2005 | US6928846 Method of manufacturing a coil spring having an oblique and straight axial line |
| 08/02/2005 | US6923034 Wire spring forming apparatus |
| 08/02/2005 | US6922895 Apparatus for the production of pocketed coil springs |
| 07/20/2005 | CN2710790Y Two-shaft and rear supporting type rolling mould spring formation device used for spring coiling machine |
| 06/28/2005 | US6910360 Multiple wire feed for spring coiling machine and method |
| 06/23/2005 | WO2005040943A3 Balance wheel, balance spring and other components and assemblies for a mechanical oscillator system and methods of manufacture |
| 06/08/2005 | EP1492637B1 Device for orienting springs |
| 05/25/2005 | EP1533053A1 Method for manufacturing a curved helical spring and device for carrying out this method |
| 05/11/2005 | CN2698494Y Spring winding machine used in a spiral pipe |
| 05/06/2005 | WO2005040943A2 Balance wheel, balance spring and other components and assemblies for a mechanical oscillator system and methods of manufacture |
| 05/06/2005 | WO2005040443A1 Stainless steel wire, spring, and method for producing spring |
| 04/27/2005 | CN1610585A Two wire spring making machine and method |
| 04/06/2005 | CN1603024A Digital control high speed spiral spring machine |
| 03/03/2005 | US20050045241 Cassette pigtailing machine for a coil spring |
| 03/03/2005 | US20050044914 Movable mounting bed apparatus of spring forming machine |
| 03/02/2005 | EP1510270A1 Casette pigtailing machine for a coil spring |
| 02/03/2005 | US20050023317 Spring manufacturing machine |
| 01/27/2005 | US20050016347 Wire rod cutting apparatus of spring manufacturing machine |
| 01/20/2005 | DE20380223U1 Vorrichtung zum Ausrichten von Federn An apparatus for aligning springs |
| 01/13/2005 | US20050005354 Multi-stranded coil spring |
| 01/12/2005 | CN2670029Y Crossbar movable tool base of computer multi-station spring forming machine |
| 01/05/2005 | EP1492637A1 Device for orienting springs |
| 01/04/2005 | US6836964 Method and apparatus for producing a helical spring |
| 12/30/2004 | DE19938905B4 Vorrichtung zur Herstellung einer Feder Apparatus for manufacturing a spring |
| 11/25/2004 | US20040231384 Spring manufacturing machine |
| 11/24/2004 | CN2657817Y Shaping mould for circular screw spring |
| 11/16/2004 | US6817220 Mold head device of spring forming machine |
| 10/28/2004 | US20040211236 Wire spring forming apparatus |
| 10/20/2004 | CN2649215Y Transmission structure improvement of cutting and interval vertical forming device for spring shaping machine |
| 10/07/2004 | US20040194525 Spring manufacturing machine |
| 09/29/2004 | EP1461172A1 Two wire spring making machine and method |
| 09/08/2004 | CN2638883Y Longitudinal spring feed device of packed spring machine |
| 09/08/2004 | CN2638882Y Edge lining spring forming machine |
| 09/08/2004 | CN1165485C Apparatus for the production of pocketed coil springs |
| 09/02/2004 | WO2004074706A2 Multi-stranded coil spring |