| 摘要 |
<p>Apparatus for separably connecting a movable barrier to a means for guiding the barrier is disclosed. The connection separates upon a transbarrier impact in excess of a predetermined magnitude. To this end a lateral connecting member (22) extends between the barrier (12) and the guide means (18) and includes opposed first and second ends (22a and 22b). The first end (22a) being attached to the guide (18) and the second end (22b) has opposed upper and lower surfaces (46, 48) arcuate portions (46a, 46b, 48a and 48b). A receptacle (24) is attached to the movable barrier and is adapted to receive the second end of the lateral connecting member (22). The receptacle has facing upper and lower inner surfaces (42, 44). The lateral connecting member and the receptacle (24) are cooperatively dimensioned so that, over a predetermined range of rotation of the receptacle (24), a greatest distance between any point on the upper outer surface (46) and any point on the lower outer surface (48) of the second end of the lateral connecting member (22b) is no greater than a smallest distance between any point on the upper inner surface (44) and any point on the lower inner surface (42) of the receptacle (24).</p> |
