| 摘要 |
A friction clutch for transmitting power under drive and over-run conditions which includes a hub (20) having a first rotationally fast part (30) with one or more friction surfaces (18) of the clutch, a second part (40) rotationally fast with a power shaft (19) and a third part (50) acted upon by the first and second parts which moves axially under the action of ramps (430R, 53A) to automatically partially disengage the clutch during transmission of power in at least one of the drive and over-run conditions. |
