Security barrier
First Claim
1. A security apparatus for spanning an access roadway comprising:
- a pair of vertical support structures, one of each said structures on each side of the access roadway;
a substantially horizontal composite beam having opposed first and second ends disposed between said support structures, said beam constructed of steel tubing enclosing an I-beam;
an end cap having a wear plate attached to each of said first and second ends; and
a pair of actuators for raising and lowering said beam, one of each said actuators attached to each of said support structures and said beam,whereby, when a moving vehicle strikes said beam, the impact force of the vehicle is transmitted through the beam to the support structures, restraining the vehicle and the beam from horizontal movement.
1 Assignment
0 Petitions
Accused Products
Abstract
A security barrier includes a horizontal composite beam extending across a roadway is mounted between vertical posts at either end of the beam. Hydraulic cylinders fastened at each beam end and to the vertical posts cause the beam to be raised and lowered, as needed. When the beam is at its lowest position, it allows for the normal flow of traffic over the top of the beam. When the beam is in its fully-raised position, it provides a vehicle barrier thirty-six inches above grade. A hydraulic power unit and components control the direction and speed of beam movement.
The security barrier also includes electronic control and monitoring of the beam, and hydraulic system.
-
Citations
18 Claims
-
1. A security apparatus for spanning an access roadway comprising:
-
a pair of vertical support structures, one of each said structures on each side of the access roadway; a substantially horizontal composite beam having opposed first and second ends disposed between said support structures, said beam constructed of steel tubing enclosing an I-beam; an end cap having a wear plate attached to each of said first and second ends; and a pair of actuators for raising and lowering said beam, one of each said actuators attached to each of said support structures and said beam, whereby, when a moving vehicle strikes said beam, the impact force of the vehicle is transmitted through the beam to the support structures, restraining the vehicle and the beam from horizontal movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification