| Patents for B21L 15 - Finishing or dressing chains or chain links, e.g. removing burr material, calibrating (138) | |
|---|---|
| 04/2002 | |
| 04/11/2002 | US20020040572 Method and apparatus for forming a wire |
| 12/2001 | |
| 12/20/2001 | US20010052227 Procedure to obtain the diamond effect in a precious metal product, particularly as in a chain with hollow links and a chain obtained according to said method |
| 09/2001 | |
| 09/04/2001 | US6284064 Performing a tension working to a carbon steel material having an average hardness in the range of hrc 50 to 57 and a bainite structure to provide a residual strain of at least 0.3% |
| 07/2001 | |
| 07/24/2001 | US6263658 Oval faceted jewelry rope chain |
| 05/2001 | |
| 05/31/2001 | WO2001038755A1 Flat link articulated chain |
| 05/23/2001 | DE10052473A1 Plate link chain for continuously variable cone drive has plates linked by rocking components seatings with their curved faces in contact, complete chain being flat |
| 05/01/2001 | US6223516 Faceting hollow link chain with finger |
| 11/2000 | |
| 11/30/2000 | DE10018132A1 Carbon steel strengthening process, especially for increasing fatigue strength, comprises working a bainitic carbon steel of specified hardness under tension to produce a specified permanent deformation |
| 08/2000 | |
| 08/22/2000 | US6105357 Method and apparatus for making hollow seamless links for use in jewelry |
| 05/2000 | |
| 05/30/2000 | US6068568 Silent chain |
| 02/2000 | |
| 02/24/2000 | DE19821674C1 Method of forming conveyor chain link involves producing outer layer of different tensile strength in sides of link |
| 08/1998 | |
| 08/25/1998 | US5797258 Method of manufacturing hollow diamond cut chain with multi-faceted surface |
| 12/1997 | |
| 12/16/1997 | CA2123575C Hollow diamond cut rope chain and method of making same |
| 08/1997 | |
| 08/05/1997 | US5653100 Method of manufacturing facetted-hollow link chain and chain formed thereby |
| 02/1997 | |
| 02/25/1997 | US5605038 Diamond cut hollow jewelry chain |
| 12/1996 | |
| 12/10/1996 | US5581993 Hollow diamond cut rope chain with multi-faceted surfaces |
| 12/10/1996 | US5581992 Method and apparatus for imparting reflective surfaces to items of jewelry |
| 07/1996 | |
| 07/16/1996 | US5535583 Method of faceting a hollow rope chain |
| 08/1995 | |
| 08/01/1995 | US5437149 Hollow diamond cut rope chain with multi-faceted surfaces |
| 06/1995 | |
| 06/20/1995 | US5425228 Multi-color faceted rope chain and fabrication method |
| 04/1995 | |
| 04/25/1995 | US5408820 Process for making hollow diamond cut rope chain |
| 10/1994 | |
| 10/11/1994 | US5353584 Hollow diamond cut rope chain with multi-faceted surfaces |
| 02/1994 | |
| 02/15/1994 | US5285625 Spiral diamond cut jewelry chain |
| 12/1993 | |
| 12/23/1993 | DE4307908C1 Chain link finishing machine - has pair of guide rails for horizontal straight conveyor chain with pair of tapering positioning pins on each link engaging in holes in link to be machined |
| 05/1993 | |
| 05/27/1993 | WO1993009897A1 Hollow diamond cut rope chain and method of making same |
| 05/19/1993 | EP0542399A1 Hollow diamond cut rope chain |
| 05/04/1993 | US5207540 Apparatus for forming diamond-shaped edges on ornamental chains |
| 09/1992 | |
| 09/30/1992 | EP0506631A1 Apparatus for forming diamond-shaped edges on ornamental chains |
| 06/1992 | |
| 06/30/1992 | US5125225 Process for making hollow diamond cut rope chain |
| 06/1988 | |
| 06/14/1988 | US4750394 Cutting machine for decoration chains |
| 03/1988 | |
| 03/15/1988 | US4730961 Edging machine preferably for chains |
| 09/1987 | |
| 09/30/1987 | EP0239398A1 Cutting machine for decorative chains |
| 07/1987 | |
| 07/28/1987 | US4682467 Chain forming method and apparatus |
| 07/1982 | |
| 07/06/1982 | CA1126967A1 Method for reconditioning rivetless chain links |
| 01/1981 | |
| 01/07/1981 | EP0021687A1 Method of reconditioning a worn chain link |
| 10/1980 | |
| 10/28/1980 | US4229962 Method for reconditioning rivetless chain links |
| 03/1978 | |
| 03/14/1978 | US4078407 Reshaping of components of ductile materials |
| 01/1977 | |
| 01/11/1977 | US4002509 Steel, hot rolling, heat treatment |
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