| 摘要 |
<p>This gate is characterised in that it comprises means (7, 9, 11, 13) of locking the outer gate (5) in the position closing the passage overlooking the open space, opposing any swinging under the effect of a horizontal force applied to the outer gate (5) in the direction of the open space and automatically locking by traction applied towards the bottom applied on the inner gate (6) in the top position. <IMAGE></p> |
