| 摘要 |
812,436. Making ball joints. THOMPSON PRODUCTS Inc. July 16, 1956 [July 21, 1955], No. 21951/56. Class 83 (2). [Also in Group XXV] A housing for a ball joint is formed in one piece from a keyhole-shaped blank of sheet metal. The blank is cupped at 15 to provide a spherical bearing socket, the peripheral area of the blank surrounding the socket flanged to provide a cup reinforcing wall, the extended part 10b of the blank is rolled into a tube, and the tube seam is then welded. The gap at the junction of the end of the tube with the cup reinforcing walls is filled with welding rod, or suitable projections (not shown) are provided on the blank at 10e to fill the gap and reduce the amount of welding necessary. |
