| 摘要 |
<p>Door actuator consisting of a double-action pneumatic cylinder consisting of two hollow cases inserted one into the other (1,2), each including a pair of spiral grooves (3) turned by 180 degrees and opposite oriented in the cases (1,2) in relation to each other, and of two pairs of carriers slinding inside the grooves, with both grooves (3) of the inner case (1) in the shape of spatial curves whose tangent and the longitudinal axis of the inner case (1) are in the angle alpha 1, and both grooves (4) of the outer case (2) in the shape of spatial curves whose tangent and the longitudinal axis of the outer case (2) are in the angle alpha 2, characterized in that both grooves (4) of the outer case (2) are provided by an extension (5) in comparison to grooves (3) of the inner case (1), in the shape of spatial curves whose tangent and the longitudinal axis of the outer case (2) are in the angle of alpha 3 in relation to each other. <IMAGE></p> |
