| United States Patent | 5,829,666 |
| Takeda, et. al. | Nov. 3, 1998 |
Abstract
A method for manufacturing a sweeped tubular bumper reinforcement member having a rear wall formed with an inwardly indented portion in cross-section and a front wall formed in parallel with the rear wall and welded to the inwardly indented portion of the rear wall.
| Inventors: | Takeda; Shinya (Toyota, JP); Nakao; Hirotake (Chiryu, JP); Terada; Haruhiko (Obu, JP). |
| Assignee: | Aisin Seiki Kabushiki Kaisha (JP). |
| Appl. No.: | 752,231 |
| Filed: | Nov. 19, 1996 |
| Nov. 20, 1995 [JP] | 7-301789 |
| Intl. Cl. : | B21C 37/08, B23K 13/02, B23K 26/00, B23K 101/06 |
| Current U.S. Cl.: | 228/147; 219/121.64; 219/612; 228/173.7; 228/175 |
| Field of Search: | 228/146, 147, 158, 175, 173.4, 173.7, 13; 72/52, 166, 168; 293/120-122, 155; 219/611, 612, 633, 121.64 |
| 5,092,512 | Mar., 1992 | Sturrus et al. | 228/146 |
| 5,163,225 | Nov., 1992 | Goleby | 228/173.4 |
| 5,306,058 | Apr., 1994 | Sturrus et al. | 229/315.4 |
| 5,554,837 | Sept., 1996 | Goodwater et al. | 219/121.64 |
| 0449599 A1 | Mar., 1991 | EP | |
| 7-246894 | Sept., 1995 | JP |