| Patents for B21F 3 - Coiling wire into particular forms (1,688) |
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| 06/06/1989 | US4836514 Preloaded spring, method and apparatus for forming same |
| 05/23/1989 | CA1254487A1 Disc roller mechanism and method for forming helical shapes |
| 04/25/1989 | US4823576 Apparatus for manufacturing ring-shaped member from elongate workpiece |
| 04/18/1989 | US4821390 Multiple-strand torsion spring and method of forming the same |
| 01/31/1989 | US4801106 Coil of tapered wire |
| 01/18/1989 | EP0299814A1 Method and apparatus for continuously manufacturing profiled bodies of stabilizable material by means of a mandrel and a support |
| 01/17/1989 | US4798072 Spring coiling machine with dual arbors |
| 12/29/1988 | WO1988010096A1 Holder for inserting corneal curvature adjustment ring |
| 12/29/1988 | DE3809494A1 Apparatus and method for handling compression springs |
| 12/29/1988 | DE3719816A1 Method of producing helical compression springs |
| 12/28/1988 | CN88104505A Holder for inserting corneal curvature adjustment ring |
| 12/28/1988 | CA1247500A Wire coil package |
| 12/15/1988 | DE3723796A1 Apparatus for the production of bent wire products |
| 10/25/1988 | US4779438 Coil spring making machine |
| 08/30/1988 | US4766625 Box spring having rows of coil springs formed from a single length of wire |
| 08/30/1988 | US4766624 Mattress assembly having rows of coil springs formed from a single continuous length of wire |
| 08/16/1988 | CA1240586A1 Roller mechanism and method for forming helical shapes |
| 07/28/1988 | WO1988005352A1 Winding device for spring winding machines with exchangeable, preadjustable elements |
| 07/07/1988 | DE3644599A1 Helical compression spring |
| 05/11/1988 | EP0266491A1 Coil of tapered wire |
| 04/19/1988 | US4738349 Automatic spring feeding device |
| 04/14/1988 | DE3634077A1 Spring-coiling machine |
| 04/13/1988 | EP0263300A1 Method and apparatus for manufacturing coil springs |
| 04/12/1988 | US4736606 Device for making springs from wire |
| 04/07/1988 | DE3724513A1 Shock and vibration damper |
| 03/16/1988 | CN85105292B Net belt |
| 02/23/1988 | US4726106 Method and apparatus for forming a row of spring coils from a continuous length of wire |
| 02/10/1988 | CN86208117U Two-way arc straightening roller |
| 01/19/1988 | US4719683 Preloaded spring, method and apparatus for forming same |
| 01/13/1988 | EP0252211A2 Machine for winding springs |
| 12/29/1987 | US4715202 Coil-spring winding apparatus |
| 12/22/1987 | US4713956 Apparatus for manufacturing spring units |
| 12/09/1987 | EP0248662A1 Spring bands for incorporation in spring units |
| 11/10/1987 | US4705580 Cutting method to be applied to producing helical springs by cold-forming thick high-strength wire |
| 10/20/1987 | US4700558 Wire coiling method and device |
| 09/29/1987 | US4696175 Clutch apparatus for spring making 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 |
| 05/26/1987 | CA1222116A1 Method and arrangement for winding and forming helixes of elastic plastic or metal wire |
| 03/25/1987 | EP0215006A1 Device for bending conical wires. |
| 03/04/1987 | CN85106161A Coiling device |
| 03/04/1987 | CN85105292A Net belt |
| 02/25/1987 | EP0211749A1 Method and machine for making an article comprising a flat spiral of metal wire |
| 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 |
| 01/31/1987 | CN85101743A Ropeform goods with sheathing from multi-number wires |
| 01/27/1987 | US4638653 Method of manufacturing and delivering coil springs |
| 12/02/1986 | US4625530 Wire preform apparatus |
| 11/18/1986 | US4622839 Apparatus for manufacturing spring unit |
| 10/14/1986 | US4616682 Method of manufacturing helically wound filaments and filaments manufactured by means of this method |
| 09/24/1986 | EP0195699A1 Wick holder for candles, candle comprising such a wick holder and method of manufacturing it |
| 08/28/1986 | WO1986004837A1 Device for bending conical wires |
| 08/26/1986 | US4607513 Wire working machine |
| 08/19/1986 | US4606209 Disc roller mechanism for forming helical shapes |
| 07/15/1986 | US4599881 Method and arrangement for winding and forming helixes of elastic plastic or metal wire |
| 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 | US4586358 Method and apparatus for producing wound coils |
| 05/06/1986 | US4586357 For advancing wire in an apparatus for forming wire into springs |
| 04/15/1986 | US4581917 Forming disc exchanging method and apparatus |
| 04/02/1986 | EP0176310A2 Coiling machine |
| 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 |
| 02/11/1986 | US4569216 Sequential variable pitch coiler |
| 12/31/1985 | US4561278 Coiling machine |
| 11/06/1985 | EP0160174A2 Machine for making helical springs |
| 10/01/1985 | US4544002 Automatic spring compressing machine |
| 09/24/1985 | US4542635 Apparatus for manufacturing solid tension coil springs having attachment loops at both ends thereof |
| 07/24/1985 | EP0149282A2 Method of manufacturing helically wound filaments and filaments manufactured by means of this method |
| 07/16/1985 | US4528831 Wire coiling machine |
| 06/25/1985 | US4524597 Method of supporting a camshaft in a wire coiling machine |
| 06/04/1985 | US4520644 Spring coiling machine with improved cut-off means |
| 05/14/1985 | CA1186872A1 Method of and apparatus for arranging helical coils in interdigitated side-by-side disposition |
| 05/08/1985 | EP0140202A2 Method of making a spiral drive spring |
| 04/25/1985 | WO1985001681A1 Process for manufacturing a spiral-shaped driving spring |
| 04/24/1985 | EP0138560A2 Improvements in or relating to wire forming apparatus |
| 04/16/1985 | US4510782 Torsion coiler |
| 04/10/1985 | EP0136554A2 Method of making a coil spring and apparatus therefor |
| 04/09/1985 | US4509352 Spring coiling machine |
| 03/12/1985 | US4503694 Spring manufacturing machine equipped with two motors |
| 02/26/1985 | US4501304 Apparatus for looping the outermost convolutions of spiral binders for note books or the like |
| 01/09/1985 | EP0130616A2 Apparatus for manufacturing spring units |
| 01/01/1985 | US4491003 Fabrication of helically-wound spirals for metal wire belts |
| 12/19/1984 | EP0128239A2 Process and apparatus for winding spiral elements from elastic, synthetic or metal threads |
| 12/18/1984 | US4488347 Method of and apparatus for arranging helical coils in interdigitated side-by-side disposition |
| 12/04/1984 | US4485851 Apparatus for raising hooks of semi-finished spring products |
| 09/26/1984 | EP0119599A2 Forming apparatus for performing bending operations |
| 08/29/1984 | EP0117097A2 Apparatus for raising hooks of semi-finished spring products |
| 06/12/1984 | US4453392 Method of hardening shaped surfaces by plastic deformation |
| 05/22/1984 | CA1167743A1 Spring coiling machine with improved cut-off means |
| 05/08/1984 | US4446607 Apparatus and method for forming an external guard member on a hose |
| 04/24/1984 | US4444036 Method of forming a coil spring |
| 04/18/1984 | EP0037415B1 Spring coiling machine with improved feed roll drive means |
| 04/10/1984 | US4441696 Flame cutting device |
| 01/24/1984 | US4426871 Apparatus for producing helical wire coils |
| 01/17/1984 | US4425773 Apparatus for winding helical wire coils |