| Patents for B21F 37 - Manufacture of rings from wire (337) |
|---|
| 06/26/1991 | EP0433918A1 Process and apparatus for manufacturing an automotive tire bead |
| 06/18/1991 | CA1284934C Tire bead assembly |
| 02/20/1991 | CN2071598U Bead wire ring with new structure |
| 02/20/1991 | CN1011669B Coiling device |
| 05/30/1990 | CN1008148B Scrapless shaping die making multipiece used in holes |
| 05/29/1990 | US4928510 Ring coiling machine |
| 04/18/1990 | CN1041297A Fabricating method of spring washer |
| 01/02/1990 | US4890364 Split ring springs for snap fasteners and method of manufacturing the same |
| 11/28/1989 | US4883722 Steel cord reinforced rubber tires |
| 09/07/1989 | DE3806722A1 Ring-bending pliers |
| 04/25/1989 | US4823576 Apparatus for manufacturing ring-shaped member from elongate workpiece |
| 04/11/1989 | US4820563 Tire bead assembly |
| 03/07/1989 | US4809532 Method of manufacturing split ring springs for snap fasteners |
| 02/15/1989 | EP0303514A1 Tire bead assembly |
| 09/21/1988 | EP0283423A1 Bead crimping and handling system |
| 07/26/1988 | US4759813 Process for forming and crimping a bead |
| 04/27/1988 | EP0264798A2 Split ring springs for snap fasteners and method of manufacturing the same |
| 03/30/1988 | CN86107871A Scrapless shaping die for making multipiece circlips used in holes |
| 03/02/1988 | EP0257667A1 Brass-coated steel elements having improved rubber adhesion properties |
| 08/25/1987 | US4688953 Bearing race manufactured from preprofiled wire |
| 03/04/1987 | CN85106161A Coiling device |
| 05/27/1986 | CA1204993A1 Process for holding together the wires of a package bead ring for tires |
| 02/19/1985 | US4499643 Process for manufacturing a piston ring |
| 10/16/1984 | US4477301 Process for holding together the wires of a package bead ring for tires |
| 03/21/1984 | EP0103044A1 Method of producing annular bodies, particularly blanks for synchronizing rings |
| 05/24/1983 | US4384467 Method of forming rings |
| 12/28/1982 | US4365492 Ring former and cutoff |
| 11/30/1982 | US4361025 Wire bending machine |
| 12/15/1981 | US4305769 Method of manufacturing tire bead rings |
| 08/25/1981 | US4285084 Method and apparatus for making lock washers |
| 03/04/1981 | EP0024362A1 A method and apparatus for stretching an endless metal band |
| 01/02/1979 | US4132106 Method for bending wire or strip material into round parts |
| 08/29/1978 | US4109361 Method and arrangement for the production of annular articles |
| 10/04/1977 | US4051874 Spring loop key ring and method and apparatus for making same |
| 05/03/1977 | US4020878 Method and apparatus for making annular metallic blanks |
| 06/29/1976 | US3966131 Method and machine for making twisted wire beads for tires |
| 03/23/1976 | US3945577 Method and apparatus for helically winding wire on a ring-shaped core |