| 摘要 |
A drive mechanism including a first member and a second member is provided. The first member defines a first member axis of rotation. The first member has a first member surface. The second member defines a second member axis of rotation. The second member has a second member surface. The first member surface of the first member is in intimate contact at a contact zone with the second member surface of the second member. The contact zone defines a plane extending substantially through the first member axis and the second member axis, whereby the force transmitted by the drive mechanism is substantially tangential to the axes of said members. |
