Patent ID: 7563051
Filing Date: 2009-07-21
Classification: E01F

Abstract:
1. A vehicle barrier system including a barrier movable between an open position to allow vehicle access therethrough and a closed position which prevents vehicle access therethrough, said barrier being attached to barrier supports at either end of said barrier, said barrier supports being secured to a slide plate which will slide after a predetermined force is applied thereto by vehicle impact with said barrier to absorb the impact energy of said vehicle; wherein movement of the slide plate is controllable by the shearing of at least two rivets securing said slide plate to at least one fixed surface on which it slides, said rivets protruding from said fixed surface through a pair of slots on opposing sides of said slide plate; wherein said at least one fixed surface is formed by a pair of ground engaging beams aligned with respective slots in said slide plate; and wherein a pair of upright beams is secured to the ground in front of respective barrier supports, said upright beams being secured to said pair of ground engaging beams at one end and pivotally and/or slidably linked to said barrier supports at the other end.