| 摘要 |
<p>A roller drive assembly comprises a drive spindle (1), at least two planet rollers (4) each in driving contact with said spindle and an outer annulus (5, 6) with which each planet roller has two distinct engagement zones. For each zone a planet roller and the respective portion (5c, 5d) of said annulus are mutually convex and the planet rollers can execute a rotation in a plane in which the axes of the roller and spindle lie, without loss of said driving contact.</p> |
