| Patents for B21F 35 - Making springs from wire (1,103) |
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| 08/15/1990 | CN2060375U Multifunction filament winder |
| 08/14/1990 | US4947670 Universal automatic spring-making machine |
| 08/07/1990 | US4945744 Method and apparatus for forming a barrel coil spring |
| 07/18/1990 | CN2059379U Soft wire spring winder with fixed axle |
| 07/17/1990 | US4942519 Coprocessor having a slave processor capable of checking address mapping |
| 06/13/1990 | EP0372872A2 A method and apparatus for making a double helix thermostat metal spring |
| 05/01/1990 | US4920624 Method and apparatus for making a double helix thermostat metal spring |
| 04/24/1990 | US4918958 Device for bending conical wires |
| 01/31/1990 | EP0352933A2 Method and apparatus for forming a barrel coil spring |
| 01/16/1990 | US4893491 Apparatus for forming coil springs |
| 11/21/1989 | CA1263070A1 Machine for production of coil springs |
| 09/26/1989 | CA1260805A1 Wire forming apparatus |
| 09/20/1989 | CN2044524U Universal full-automatic spring coiler with continuous feeding |
| 09/08/1989 | WO1989007994A1 Apparatus for manufacturing combined springs |
| 08/16/1989 | CN1034685A Apparatus for making wire springs |
| 07/12/1989 | EP0323534A1 Forming device to be practiced in coil spring forming machine and method of replacing said device |
| 07/05/1989 | EP0322605A2 Method of making double-coned coil spring and apparatus therefor |
| 05/02/1989 | US4825678 Three-dimensional bending apparatus |
| 04/18/1989 | CA1252706A1 Bending apparatus |
| 04/04/1989 | CA1252030A1 Improved automated machine for bending thin and straight elements, e.g. metal wires, into spatial configurations |
| 02/15/1989 | CN1031034A Device for making springs from wire |
| 01/31/1989 | US4801106 Coil of tapered wire |
| 01/24/1989 | US4799373 For bending wire, tubing, or other elongate material |
| 01/18/1989 | EP0299857A2 Machine for bending wires |
| 11/08/1988 | US4782684 Bending machine |
| 10/25/1988 | US4779438 Coil spring making machine |
| 09/07/1988 | EP0281488A1 Turning bending head for a tube-bending machine |
| 05/31/1988 | US4747293 Bending apparatus |
| 05/24/1988 | US4745951 Coil spring hooking method and apparatus |
| 05/11/1988 | EP0266491A1 Coil of tapered wire |
| 04/05/1988 | CA1234685A1 Method and apparatus for manufacturing innerspring constructions |
| 12/22/1987 | US4713956 Apparatus for manufacturing spring units |
| 11/11/1987 | EP0245036A1 Fluid flow or pressure transmission device |
| 08/05/1987 | EP0231092A2 Bending machine |
| 08/05/1987 | EP0230664A2 Master slave microprocessor system with virtual memory |
| 07/28/1987 | US4682394 Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same |
| 07/21/1987 | US4680950 Method of and an apparatus for forming tension springs with German type hooks |
| 06/09/1987 | US4672549 Coil spring forming machine |
| 06/02/1987 | US4669289 Coil spring manufacturing apparatus |
| 05/19/1987 | US4665731 Bending apparatus |
| 04/07/1987 | US4655069 Automatic machine for curving thin and rectilinear elements, such as metal wires |
| 03/25/1987 | EP0215006A1 Device for bending conical wires. |
| 02/25/1987 | EP0211242A2 Spring-coiling machine |
| 02/03/1987 | US4639957 Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same |
| 11/18/1986 | US4622839 Apparatus for manufacturing spring unit |
| 10/29/1986 | EP0198984A2 Bending apparatus |
| 08/28/1986 | WO1986004837A1 Device for bending conical wires |
| 06/17/1986 | US4594869 Method and apparatus of manufacturing a coil spring |
| 06/03/1986 | US4592223 Wire forming apparatus |
| 05/13/1986 | US4587821 Wire forming machine |
| 05/06/1986 | US4586357 For advancing wire in an apparatus for forming wire into springs |
| 03/18/1986 | US4576028 Method of making a coil spring and apparatus therefor |
| 02/25/1986 | US4571973 Method and apparatus for forming a pig tail end on a coil spring |
| 12/03/1985 | US4555924 Automatic machine for curving, in a spatial configuration, thin and rectilinear metal elements, more especially metal wires |
| 11/19/1985 | US4553382 Device for producing twist-crimped threads |
| 11/06/1985 | EP0160174A2 Machine for making helical springs |
| 09/24/1985 | US4542635 Apparatus for manufacturing solid tension coil springs having attachment loops at both ends thereof |
| 06/25/1985 | US4524596 Method of forming and feeding torsion springs |
| 05/15/1985 | EP0141745A1 Automatic machine for bending thin and rectilinear elements, especially metal wire, into a spatial configuration |
| 05/09/1985 | WO1985001898A1 Improved automatic machine to camber with a spatial configuration thin and rectilinear elements, particularly metal wires |
| 04/24/1985 | EP0138560A2 Improvements in or relating to wire forming apparatus |
| 04/10/1985 | EP0136554A2 Method of making a coil spring and apparatus therefor |
| 01/09/1985 | EP0130616A2 Apparatus for manufacturing spring units |
| 12/04/1984 | US4485851 Apparatus for raising hooks of semi-finished spring products |
| 11/27/1984 | CA1178411A1 Manufacture of springs of fibre reinforced composite material |
| 09/18/1984 | US4471819 Method of, and an apparatus for, making a formed wire |
| 08/29/1984 | EP0117097A2 Apparatus for raising hooks of semi-finished spring products |
| 05/22/1984 | CA1167743A1 Spring coiling machine with improved cut-off means |
| 05/16/1984 | EP0108695A1 Automatic machine for bending thin and rectilinear metallic elements, especially metal wire, into a spatial configuration |
| 04/25/1984 | EP0106067A2 Apparatus for making torsion-crimped yarns |
| 04/18/1984 | EP0037415B1 Spring coiling machine with improved feed roll drive means |
| 12/13/1983 | US4420450 Manufacture of springs of fibre reinforced composite material |
| 04/26/1983 | CA1145227A1 Spring coiling machine |
| 04/05/1983 | CA1144041A1 Spring coiling machine with improved feed roll drive means |
| 11/16/1982 | CA1135465A1 Method of forming fixing heads on tension springs and tension springs manufactured by means of this method |
| 09/29/1982 | EP0061273A2 Manufacture of springs of fibre reinforced composite material |
| 07/21/1982 | EP0056330A2 Spring coiling machine with improved cut-off means |
| 10/27/1981 | US4296621 Machines for forming coiled springs |
| 06/02/1981 | US4270582 Spring nesting apparatus |
| 06/02/1981 | US4270261 Method of forming fixing heads on tension springs and tension springs manufactured by this method |
| 05/20/1981 | EP0028646A1 Storing apparatus for storing elongate elements |
| 04/16/1981 | WO1981000974A1 Spring coiling machine with improved feed roll drive means |
| 03/03/1981 | US4253499 Apparatus for severing and deforming the ends of helical binders for pads or the like |
| 12/02/1980 | US4236397 Method of and apparatus for producing coil springs with eyelets |
| 11/27/1980 | WO1980002519A1 Spring nesting apparatus |
| 10/14/1980 | US4227392 Spring winding machine |
| 07/01/1980 | CA1080452A1 Method and apparatus for forming a row of spring coils from a continuous length of wire |
| 03/18/1980 | CA1073644A1 Locating means for co-operating with helical wires |
| 02/05/1980 | CA1071071A1 Method and apparatus for the production of wire springs |
| 05/29/1979 | CA1055281A1 Manufacturing process of an o ring from a jointed spire spring |
| 05/08/1979 | US4153081 Apparatus for severing and deforming the ends of helical binders for pads or the like |
| 04/03/1979 | US4147048 Machines for the manufacture of springs fitted with eyelets or hooks |
| 03/21/1979 | EP0001055A1 Method and apparatus for forming a row of spring coils from a continuous length of wire |
| 01/30/1979 | US4136718 Apparatus for making serpentiform springs |
| 10/24/1978 | US4122326 Method of welding a spiral spring to produce a toroidal ring |
| 10/24/1978 | US4121628 Spring forming machine |
| 09/12/1978 | US4112726 Method and apparatus for forming a row of spring coils from a continuous length of wire |
| 06/20/1978 | US4095623 Apparatus for severing and deforming the ends of helical binders for pads or the like |
| 11/23/1976 | US3993106 Wire spring-manufacturing apparatus |
| 08/03/1976 | US3972109 Cutting fixture for spiral binders and method of manufacture |