| 摘要 |
1388715 Shafts SOC ARDENNAISE D'ESSIEUX SA 24 March 1972 [25 March 1971] 13905/72 Heading F2U [Also in Division E1] A shaft, axle or beam comprises a small diameter D 1 section joined to a large diameter D 2 section by a section whose profile five portions BC, CD, DE, EF, FG, the first portion BC being an arc either tangential to, or providing a minimum diameter section S 1 adjacent, the small diameter D 1 section, this portion merging tangentially with the second portion CD of smaller radius R 2 than that R 1 of portion BC, until it either is tangential to or undercuts the portion DE which is radial, the portion EF is either parallel to the shaft, axle &c. axis or diverges therefrom, or is part diverging and part parallel, at point F the diameter is at least D 2 , and the portion FG is an arc providing a section S 3 of diameter less than D 2 . Certain preferred size ratios are given. |
