| 摘要 |
A device for converting a rotary motion into a linear one comprising a first, elongate body (1) provided with bars and grooves (2) extending along the body and a second body (3) rotatable coaxially relative to the first body. The device is characterized in that a third, annular body (10) is arranged to engage a portion of the bars and grooves (2) of the first body (1) by grooves and cams and that the third body (10) is rotatable and axially non-rotatably mounted in the second body (3). |
