Patent ID: 6702512
Filing Date: 2004-03-09
Classification: E01F

Abstract:
An installation for arresting movement of a vehicle along a course bordered by at least one surface extending along part of the course, the installation comprising:a bollard fixed to a support disposed adjacent to the course, the support defining a pivot axis for the bollard, the axis being oriented substantially parallel to the surface and perpendicular to a direction of advance of the vehicle along the course, the support positioning the bollard such that a free end of the bollard protrudes from the surface into the course and the bollard obstructs a path of the vehicle; an elongated piercing structure disposed normally along the surface and extending from the axis in a direction opposite to the path of the vehicle, the piercing structure being fixed at a relative angle with the bollard of less than or equal to a predetermined angle, wherein the piercing structure comprises at least one structural bar having flanges and at least one of said flanges is tapered to a point; and, wherein a vehicle moving along the course and striking the bollard lifts the piercing structure to an acute angle relative to the surface, thereby piercing and arresting the vehicle.