| 摘要 |
<p>Disclosed herein is rotary-to-linear actuator which includes a rigid shaft (15) having a diameter, and a plurality of rolled parallel helical grooves (25), and a resinous collar (17) fabricated of low friction material and having a like plurality of corresponding spiral ridges (45) received in the grooves, whereby one rotation of the shaft displaces the collar through an axial distance equal to the lead or pitch.</p> |
