| 摘要 |
This device for controlling access 1 through a barrier 4 of the lifting type is characterised in that the said barrier is secured on a controlling crank arm 5 with the aid of elastic means 8, 13, 14 for retention of the barrier 4 on the crank arm 5, these means being capable of permitting, in a closed position, its retraction, without breaking, by lateral pivoting P about a transverse hinge 6 of the crank 5 and of the barrier 4 under the action of a predetermined force. <IMAGE>
|
