| 摘要 |
1531205 Friction clutches AISIN SEIKI KK 29 July 1977 [26 Aug 1976] 31911/77 Heading F2C Clutch facings, e.g. for motor vehicle clutches, are made from an asbestos fibre string impregnated with from 14 to 24% by weight of phenolic resin and 1 to 8% by weight of graphite (both calculated on the weight of the asbestos fibre string), and cured to a Rockwell hardness on the Moh scale of from 20 to 60. Specific examples are given. |
