| Patents for B21L 1 - Making chains or chain links by bending workpieces of rod, wire, or strip to form links of oval or other simple shape (89) |
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| 02/11/2015 | CN104343891A 一种圆环链条及用于生产该链条的压扁模具和压扁工艺 Used in the production chain and a ring mold and flattening process of flattening of the chain |
| 10/09/2014 | WO2014165125A1 Process and apparatus for inspecting material jointing |
| 08/28/2014 | DE102012220273B4 Kettenbiegemaschine Chain bending machine |
| 06/18/2014 | CN203649297U 一种新型的全自动圆环链条的编结设备机械手装置 A new automatic ring chain knitting equipment robotic device |
| 06/12/2014 | DE102012220273A1 Kettenbiegemaschine Chain bending machine |
| 06/11/2014 | CN203635846U 一种全自动编链机 A fully automatic machine knitting chain |
| 05/21/2014 | CN103801652A 链弯折机器 Chain bending machine |
| 05/14/2014 | EP2730347A1 Chain bending machine |
| 12/04/2013 | CN103418738A Compact-chain connecting method by once positioning, bending and molding |
| 11/20/2013 | CN203292419U Feeding transmission mechanism of automatic chaining machine |
| 08/07/2013 | CN102489661B Clamp chain block pedestal structure on metal round-link chain stretching device |
| 05/15/2013 | CN103100637A Chaining method of round-link chain |
| 05/01/2013 | CN202908001U Circular connecting shackle adornment and automatic machining equipment thereof |
| 02/27/2013 | CN202752534U Folding type chain making structure |
| 02/13/2013 | CN102920115A Circular connecting shackle ornament and automatic processing device thereof |
| 11/21/2012 | CN202539466U Annular chain forming device |
| 10/31/2012 | CN202506790U Feeding mechanism of chaining machine |
| 10/03/2012 | CN202461416U Chain ring centering structure |
| 08/29/2012 | CN202398780U High-strength large mine round-link chain bending mechanism |
| 08/29/2012 | CN202398779U Automatic string braiding device for high strength large ring chain for mine |
| 08/29/2012 | CN202398778U Chain clamping block base structure on metal round-link chain stretching device |
| 08/29/2012 | CN202398777U Non-damage automatic stretching device for metal round link chains |
| 08/22/2012 | CN202387915U Chain ring rotating structure |
| 08/15/2012 | CN102632187A Winding and folding type chaining method |
| 08/01/2012 | CN202356574U Production equipment of chain |
| 07/11/2012 | CN102554116A Chain-ring centering structure |
| 06/20/2012 | CN102500743A Link rotating structure |
| 06/20/2012 | CN102500742A Novel chain weaving machine |
| 06/13/2012 | CN202270930U 新型编链机 The new machine knitting chain |
| 06/13/2012 | CN102489663A Mining high-intensity large round-link chain bending mechanism |
| 06/13/2012 | CN102489662A Automatic serial knitting device and method for high-strength large round-link chain for mining |
| 06/13/2012 | CN102489661A Clamp chain block pedestal structure on metal round-link chain stretching device |
| 04/25/2012 | CN202199717U 套链机械手 Sets of chain manipulator |
| 12/21/2011 | CN101920308B 一种圆环链编链的方法 One kind of ring chain chaining method |
| 08/03/2011 | CN101693280B Two-station mandrel mechanism for serially connected knitting of metal ring chain |
| 07/06/2011 | CN102114520A Automatic chaining machine for chains adopting waste materials |
| 05/11/2011 | CN201823881U Special ring punching device for tire protection chains |
| 01/05/2011 | CN101658896B Damage-free automatic chain bending mechanism for high-intensity metal round link chains |
| 12/29/2010 | CN101927314A Method for connecting annular chains |
| 12/22/2010 | CN101920308A Method for chaining round-link chain |
| 11/24/2010 | CN201644703U Automatic chain stitching machine |
| 10/28/2010 | US20100269479 Method for producing welded round and profile chains, chain links for a round or profile chain and round or profile chain made of chain links of said kind |
| 09/01/2010 | CN201565549U Dual-position mandrel device for serial connection and knitting |
| 07/21/2010 | CN201529742U High-strength metal round link chain damage-free automatic chain-bending mechanism |
| 06/02/2010 | CN201497366U Medium-frequency heating transverse automatic feeding and discharging mechanism of metal round bar stocks |
| 05/26/2010 | CN201482909U Chain knitting mandrel |
| 04/14/2010 | CN101693280A Two-station mandrel mechanism for serially connected knitting of metal ring chain |
| 03/03/2010 | CN101658896A Damage-free automatic chain bending mechanism for high-intensity metal round link chains |
| 06/10/2009 | CN100496803C Automatic concatenation knitting-on method and apparatus for metal forging circular chain |
| 04/09/2008 | CN101157115A Automatic concatenation knitting-on method and apparatus for metal smith forging circular chain |
| 06/06/2007 | CN2907956Y Feeding carriage regulating device of horizontal chaining machine |
| 12/27/2006 | CN1291806C Method for automatically abutting metal ring chain and said abutting apparatus |
| 12/19/2006 | US7150141 Waist chain and related method |
| 11/21/2006 | US7137239 Prickle chain link |
| 09/26/2006 | US7111447 Method of forming jewelry articles |
| 12/01/2005 | US20050262823 Prickle chain link |
| 11/29/2005 | US6968671 Lightweight OMEGA chain and improved method of manufacture |
| 11/25/2005 | CA2508294A1 Prickle chain link |
| 11/09/2005 | CN1693003A Method for automatically abutting metal ring chain and said abutting apparatus |
| 05/24/2005 | US6895737 Lightweight omega chain and improved method of manufacture |
| 04/28/2005 | US20050086925 Lightweight OMEGA chain and improved method of manufacture |
| 03/01/2005 | US6860097 Lightweight omega chain and improved method of manufacture |
| 12/16/2004 | US20040250527 Lightweight omega chain and improved method of manufacture |
| 11/11/2004 | US20040221570 Lightweight omega chain and improved method of manufacture |
| 08/19/2004 | US20040159088 Method of forming jewelry articles |
| 06/08/2004 | US6745554 Lightweight omega chain and improved method of manufacture |
| 03/25/2004 | US20040055269 Jewelry link forming apparatus |
| 12/04/2003 | US20030221408 Lightweight omega chain and improved method of manufacture |
| 09/16/2003 | US6619024 Jewelry link forming apparatus |
| 04/29/2003 | US6553751 Exterior shaped link and method |
| 08/08/2002 | US20020104306 Exterior shaped link and method |
| 08/22/2000 | US6105358 Rope chain |
| 06/02/1999 | CN2321559Y Improved structure for chain making machine |
| 01/14/1997 | US5592809 Link forming and joining apparatus |
| 04/24/1996 | CN2225320Y Automatic braider of circular chain |
| 03/16/1993 | CA1314426C Prickle chain means and method of production thereof |
| 01/16/1990 | US4893463 Prickle chain device and method of production thereof |
| 09/22/1987 | US4694644 Method and apparatus for producing oval chain links from round wire |
| 07/21/1987 | US4680926 Process and apparatus for the production of oval chain links from round wire |
| 04/19/1983 | US4380145 Wire link-forming and linking device |
| 01/19/1982 | US4311003 Machine for the formation of chains with links of two types |
| 07/22/1980 | CA1081926A2 Method of producing split bearing rings |
| 07/22/1980 | CA1081925A2 Method of producing split bearing rings |
| 07/01/1980 | US4209978 Method of bending a link blank into a chain link and a bending machine for carrying out the method |
| 08/07/1979 | US4163363 Chain link bending machine |
| 12/05/1978 | US4127987 Machine for manufacturing chains having differentiated links |
| 11/07/1978 | US4123899 Method for bending chain links and chain link bending machine |
| 06/08/1976 | US3961474 Method and apparatus for the manufacture of chains with round links, having varying mechanical characteristics |
| 01/27/1976 | US3934407 Method of and apparatus for producing particularly high-strength chains |