| Patents for B21L 3 - Making chains or chain links by bending the chain links or link parts and subsequently welding or soldering the abutting ends (123) | |
|---|---|
| 12/1981 | |
| 12/23/1981 | EP0042283A1 A chain link |
| 05/1981 | |
| 05/12/1981 | US4267421 Apparatus for the successive welding of C-shaped, pre-bent, interlinked chain links |
| 08/1980 | |
| 08/05/1980 | CA1082994A1 Method and apparatus for continuously soldering chains of precious metals or plated therewith |
| 07/1980 | |
| 07/08/1980 | US4211068 Chain welding machine |
| 07/01/1980 | US4209978 Method of bending a link blank into a chain link and a bending machine for carrying out the method |
| 08/1979 | |
| 08/14/1979 | US4164638 Method for flash butt welding of annular workpieces |
| 08/14/1979 | US4164118 Apparatus for positioning the links of a length of chain |
| 06/1979 | |
| 06/19/1979 | US4158288 Revolving chain links |
| 04/1979 | |
| 04/10/1979 | US4149058 Successive welding of immediately consecutive chain links |
| 02/1979 | |
| 02/27/1979 | CA1049269A1 Apparatus for positioning the links of a length of chain |
| 02/20/1979 | US4139982 Chain welding machine |
| 02/20/1979 | CA1048793A1 Heavy-duty offshore stud chain link |
| 01/1979 | |
| 01/09/1979 | US4133999 Apparatus for the successive welding of consecutive chain links |
| 02/1978 | |
| 02/21/1978 | US4075451 Butt welding apparatus |
| 02/14/1978 | US4073428 Method and apparatus for continuously soldering of chains of precious metals or plated therewith |
| 01/1978 | |
| 01/10/1978 | US4067188 Heavy-duty offshore stud chain link |
| 12/1977 | |
| 12/13/1977 | US4063065 Method and apparatus for the resistance heating of wire pins |
| 10/1977 | |
| 10/04/1977 | US4051667 Chain welding machine |
| 03/1977 | |
| 03/15/1977 | US4012618 Method and apparatus for the successive welding of consecutive chain links |
| 01/1977 | |
| 01/04/1977 | US4000606 Chain making apparatus |
| 08/1976 | |
| 08/31/1976 | US3977180 Automatic chain manufacturing system |
| 06/1976 | |
| 06/01/1976 | US3959965 Method and apparatus for welding a link chain |
| 01/1976 | |
| 01/27/1976 | US3934407 Method of and apparatus for producing particularly high-strength chains |
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