| 摘要 |
The balls (13) work in conjunction with the screw (1), running in its screw-line threads (2). They also run in tracks (12) in a ring (4) coaxially located around the screw where they run parallel and at right-angles to the axis (11) of the screw. The ring is freely rotatable in its location, but is immovable axially in a nut body (3) fitted coaxially around the ring. |
