| 摘要 |
1534220 Expanding rollers GOODYEAR TIRE & RUBBER CO 19 July 1977 [24 Aug 1976] 30292/77 Heading F2U A mandrel for use in fabricating an air spring has a fixed diameter portion 60 and an expansible portion 60<1> formed by levers 65, the portions 60, 60<1> extending between end members 30, 34 on a rotatable shaft 12. The levers 65 have notches 65a to enable an inexpansible ring to be fitted on the end of the air spring, which end is turned over to accommodate the ring. Portions 32, 36 of the mandrel are telescopically arranged, sliding of end member 30 varying the axial length. The levers 65 are simultaneously pivoted and the end of the air spring turned up by the inflation of tubes 71, 81. There may be levers 65 at both ends of the mandrel (Fig. 3, not shown). |
