| 摘要 |
1515233 Underframes DRESSER INDUSTRIES Inc 24 Feb 1976 [27 Feb 1975] 07288/76 Addition to 1485699 Heading B72 A railway car underframe has a tubular sill 5, Fig. 1, having an equilateral parallelogramic cross-section arranged with two opposite apices in a vertical plane, connected to a draft sill 6, Fig. 2, of inverted U-shaped cross-section by a transition member 11 which telescopes into and mates with the surfaces of both sills and also forms a centre pocket 25, Fig. 4 with the draft sill. |
