| 摘要 |
993,399. Friction clutches. FICHTEL & SACHS A.G. April 1, 1964 [April 4, 1963], No. 13484/64. Headings F2C and F2U. [Also in Division B3] Involute splines in the pressed metal hub 50 of a motor vehicle clutch-plate 46 are formed by pressing or rolling. Friction facings 52, 54 are carried by an annular disc 51 riveted to the hub 50. |
