| Patents for B21F 35 - Making springs from wire (1,103) |
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| 05/27/2009 | CN201244646Y Torsional cutting device of spring forming machine |
| 05/27/2009 | CN201244645Y Numerical control spring winding machine |
| 05/27/2009 | CN201244644Y Spring receiving apparatus of spring manufacturing machine for processing conjoined spring |
| 05/27/2009 | CN201244643Y Moulding apparatus of spring manufacturing machine for processing conjoined spring |
| 05/27/2009 | CN201244642Y Bending apparatus of spring manufacturing machine for processing conjoined spring |
| 05/27/2009 | CN201244641Y Spring manufacturing machine for processing conjoined spring |
| 04/30/2009 | WO2009054886A2 Reverse engineering based coil spring design method |
| 04/23/2009 | DE102008029429A1 Verfahren zum Herstellen von mechanischen Funktionselementen für Uhrwerke sowie nach diesem Verfahren hergestelltes Funktionselement A method for producing mechanical movements as well as for functional elements manufactured by this method function element |
| 04/22/2009 | CN201223914Y Coiler for spring forming machine |
| 04/16/2009 | DE102007048429A1 Rolling wrap pin for treating round and profile wires for production of coil springs, has belt sleeve roller holder, which grabs belt sleeve roller over axial receiver, where axial receiver has casing |
| 04/02/2009 | US20090085267 Compression spring and method for the prodution thereof |
| 04/02/2009 | DE10345445B4 Vorrichtung zur Fertigung einer Feder An apparatus for manufacturing a spring |
| 03/18/2009 | CN201208637Y Wire-winding type computer spring machine |
| 03/05/2009 | WO2009026775A1 Drive machinery for spring forming apparatus |
| 03/05/2009 | US20090057966 Spring body for gas spring assembly and method of forming same |
| 03/03/2009 | US7496998 Spring manufacturing apparatus |
| 02/11/2009 | CN201193683Y Wire-feeding transmission mechanism of computer spring making machine |
| 02/11/2009 | CN201193682Y Rotary core transmission mechanism of computer spring making machine |
| 02/11/2009 | CN201193681Y Cam shaft transmission mechanism of computer spring making machine |
| 01/28/2009 | CN100455375C Improved cutting and pushing device for spring forming machine |
| 01/21/2009 | CN101347813A Wire forming machine |
| 01/14/2009 | CN101342565A Method for qualifying work load or deformation of close coiled circular column draft helical spring |
| 01/14/2009 | CN101342564A Spring manufacturing machine for processing conjoined spring |
| 01/08/2009 | US20090007619 Wire-forming machine |
| 01/08/2009 | DE102007031514A1 Drahtverformungsmaschine Wire forming machine |
| 12/31/2008 | CN201172094Y Drive structure of spring forming machine |
| 12/25/2008 | US20080314110 Spring manufacturing apparatus |
| 12/11/2008 | DE102008002214A1 Vorrichtung zum Herstellen eines schraubenförmigen Teils und Steuerverfahren derselben Apparatus for producing a helical part and control method thereof |
| 11/27/2008 | WO2008143595A1 Uninterrupted, nested spring and its manufacture |
| 11/27/2008 | US20080289389 Wire-forming apparatus |
| 11/20/2008 | US20080282759 Apparatus and Method for the Manufacture of a Spring Unit |
| 11/06/2008 | US20080271318 Method of making compressible elastomeric spring |
| 10/23/2008 | US20080258366 Spring apparatus and a method of providing such |
| 10/23/2008 | US20080257003 Apparatus for the Production of Wire Springs |
| 10/22/2008 | CN101290034A Spring device and method for providing the spring device |
| 10/22/2008 | CN100427240C Wire product formation device |
| 10/08/2008 | CN100424377C Spring assembly and manufacturing method thereof |
| 10/01/2008 | CN201124209Y Spring forming machine |
| 09/17/2008 | CN100418663C Structural improvement for bunt push device of machine for forming springs |
| 09/04/2008 | US20080209731 Method of shot peening coil springs |
| 08/27/2008 | CN201105306Y Novel high-speed numerical control spring machine |
| 08/13/2008 | CN201098718Y Automatic beveling device for spring making machine |
| 08/07/2008 | WO2008092502A1 Two-layer or multiple-layer compression spring |
| 07/30/2008 | CN100406154C Knotting spring clamping mechanism of full-automatic spring-coiling machine |
| 07/30/2008 | CN100406153C Spring knotting mechanism of full automatic spring coiling machine |
| 07/24/2008 | US20080173056 Bending device of a spring forming machine |
| 07/23/2008 | CN100404160C Full function spring press |
| 07/10/2008 | US20080164644 Vibration isolation apparatus and methods of manufacture |
| 07/01/2008 | US7392681 Wire rod cutting apparatus of spring manufacturing machine |
| 06/17/2008 | CA2336084C Manufacture of pocketed compound nested coil springs |
| 05/29/2008 | DE202008003006U1 Drahtübertragungs- und Drahtzuführvorrichtung einer Federformmaschine Drahtübertragungs- wire feeder and a spring forming machine |
| 05/29/2008 | DE10342451B4 Vorrichtung zur Herstellung von Federn, sowie auf der Vorrichtung montiertes Bauteil zur Übertragung von Antriebskraft Device mounted for the production of springs, and on the device for the transmission of drive force component |
| 05/21/2008 | CN100388989C Clamping knotter for spring of fully automatic spring coiling machine |
| 05/20/2008 | US7374157 Spring assembly and method for manufacturing the same |
| 05/15/2008 | WO2008056595A1 Coil spring forming apparatus and coil spring |
| 05/07/2008 | CN201055895Y Spring doubling-up machine |
| 04/17/2008 | DE102006048642A1 Multi-functional spring fabrication assembly has central control system linked to all operational stages |
| 03/27/2008 | DE102007035062A1 Federherstellungsvorrichtung und Steuerverfahren für diese Spring manufacturing apparatus and control method for this |
| 02/28/2008 | WO2008023898A1 Method to provide initial tension for coil spring and its application |
| 02/28/2008 | US20080047144 Method to provide initial tension for coil spring and its application |
| 02/28/2008 | DE102006040163A1 Procedure for the production of a coil spring from a wire, comprises rolling two flattenings by a forming device, coiling the spring by means of a coiling machine and forming the convex flattening |
| 02/27/2008 | CN201026516Y Forming apparatus for spring retainer of bed mattress |
| 02/26/2008 | US7334445 Method for producing an end lug of a spring member formed of a strand of wire, and apparatus for manufacturing same |
| 02/21/2008 | DE19950400B4 Vorrichtung zum Überführen einer aufrechtstehenden schraubenlinienförmig gewundenen, von einem Transportmittel beidendig unter Vorspannung festgehaltenen Feder Apparatus for transferring an upstanding helically wound, both ends held by a means of transport under bias spring |
| 02/20/2008 | CN201023115Y Mattress spring seat ring forming drive mechanism |
| 12/11/2007 | US7308265 Device and methods for acquiring a public land mobile network of a mobile station and providing public land mobile network information in a cellular communication system |
| 12/06/2007 | WO2007138989A1 Device and method for forming end of coiled spring |
| 12/05/2007 | CN100353088C Thread spool driving structure for spring machine |
| 12/05/2007 | CN100352575C Digital control high speed spiral spring machine |
| 11/14/2007 | EP1225989B1 Apparatus and method for securing borderwires to mattress innersprings |
| 11/08/2007 | DE19544365B4 Schraubenfeder und Verfahren zu deren Herstellung Coil spring, and methods for their preparation |
| 10/24/2007 | CN200963664Y Compression spring mechanism for pocket spring machine |
| 10/03/2007 | CN200954533Y Synchronous belt-driving cutter seat of computer multi-working-position spring former |
| 09/20/2007 | DE102005050008B4 Vorrichtung und Verfahren zum Wickeln von endlosen Schraubenfedern Device and method for winding endless coil springs |
| 09/13/2007 | DE102006010526A1 Spring-elastic part e.g. coil spring, manufacturing method for use in passenger car, involves carrying out cross sectional variation of rod-shaped metallic workpiece during traction process under heating up with traction force |
| 09/11/2007 | US7267142 Method for increasing the torque of a pre-tensioned spring that is wound around a rotating body comprising a longitudinal axis |
| 08/29/2007 | CN100333853C Spring beating device of full automatic spring coiling machine |
| 07/18/2007 | CN2923099Y Control structure of outer diameter of pressure spring machine |
| 07/11/2007 | CN2920477Y Shaping mould of spring and spring shaping machine including said mould |
| 06/27/2007 | CN1986107A Improved cutting and pushing device for spring forming machine |
| 06/21/2007 | US20070140065 Balance wheel, balance spring and other components and assemblies for a mechanical oscillator system and methods of manufacture |
| 06/19/2007 | US7232117 Pneumatic spring pot and method for producing same |
| 06/14/2007 | DE102005028484B4 Zylinderfeder sowie Verfahren und Vorrichtung zur Herstellung einer Zylinderfeder Cylinder spring and method and apparatus for manufacturing a cylinder spring |
| 05/31/2007 | US20070118987 Multi-stranded coil spring |
| 05/16/2007 | CN1962115A Apparatus and method for manufacturing resilient member |
| 05/09/2007 | CN1958189A Structural improvement for bunt push device of machine for forming springs |
| 04/25/2007 | EP1776532A1 Compression spring used to control a dynamically stressed element |
| 04/25/2007 | CN1311931C Multiple wire feed for spring coiling machine and method |
| 04/18/2007 | CN2889546Y 蛇形弹簧折弯装置 Serpentine spring bending means |
| 04/12/2007 | US20070082223 Stainless steel wire, spring and method of manufacturing the spring |
| 04/12/2007 | DE102005050008A1 Device for winding coil springs has a spindle with rotatable winding shaft which is clamped the wire at end of spindle, a feed mechanism guiding the wire along the shaft winding spool rotatable about longitudinal and perpendicular thereto |
| 04/03/2007 | US7198187 Spring manufacturing machine |
| 04/03/2007 | US7198068 Cassette pigtailing machine for a coil spring |
| 03/21/2007 | CN2880315Y Knotting barrel position regulating apparatus for full automatic spring coiling machine |
| 03/20/2007 | US7192015 Plate spring with improved settlement behavior |
| 03/15/2007 | WO2007028266A1 Barrel core, in particular for a mattress, method for producing said barrel core and a spring winding machine for carrying out said method |
| 03/07/2007 | CN1302871C Method of manufacturing a coil spring having an oblique and straight axial line |
| 02/28/2007 | EP1439924B1 Apparatus for making mattress and upholstery spring coils and method |
| 02/28/2007 | CN2873358Y Positioning mechanism for full automatic spring coiling machine |
| 02/28/2007 | CN2873357Y Overload protecting mechanism for full automatic spring coiling machine |