Collapsible road barrier

• US 4,861,185 A
• Filed: 06/21/1988
• Issued: 08/29/1989
• Est. Priority Date: 12/23/1986
• Status: Expired due to Fees

• Current Assignee: Peter A.J. Eikelenboon
• Original Assignee: Peter A.J. Eikelenboon
• Inventors: Eikelenboon, Peter A. J.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Spahn, Gay Ann
• Application Number:
  US07/209,371
• Time in Patent Office: 434 Days
• Field of Search: 404/9, 404/10, 404/11, 404/6, 49/33, 49/34, 49/49, 49/9, 49/131, 188/371, 188/376, 188/377
• US Class Current: 404/6
• CPC Class Codes: E01F 13/08 by swinging into closed position about a transverse axis situated in the road surface, e.g. tiltable sections of the road surface, tiltable parking posts
• CPC Class Codes: E01F 13/123 depressible or retractable below the traffic surface, e.g. one-way spike barriers, power-controlled prong barriers

Abstract

A collapsible road barrier comprises a foundation pit, a frame located in the foundation pit, an expandable barrier element mounted in the frame, at least one energy absorption element extending from a rear wall of the foundation pit to a rear side of the frame, and at least one stretching element connected between the front side of the frame and the front wall of the foundation pit, such that vehicle impact against the barrier element will cause the frame to first move towards the rear wall of the foundation pit, causing the energy absorption element(s) to compress and the stretching element(s) to extend and eventually break, and then pivot upwardly to stop the vehicle.

Claims

1. A collapsible road barrier which comprises

a foundation pit having a front wall, a rear wall and a floor,

a frame which is positioned in said foundation pit, said frame having a front side and a rear side,

an extendable barrier element mounted within said frame,

an energy absorption element extending between said rear wall of said foundation pit and said rear side of said frame, and

a stretching element which is connected from said front side of said frame near a top edge thereof to said front wall of said foundation pit near said floor,

said collapsible road barrier functioning such that a vehicle moving towards said rear wall of said foundation pit from said front wall and impacting said extendable barrier element will cause said frame to move towards said rear wall of said foundation pit, thereby causing said energy absorption element to become compressed and said stretching element to become stretched and to break, said frame then pivoting upwardly in order to stop the movement of the vehicle.

2. A collapsible road barrier according to claim 1 wherein said foundation pit includes opposite side walls defining guide tracks, and wherein said frame includes guide elements adjacent said rear side thereof that respectively project into said guide tracks.

3. A collapsible road barrier according to claim 2, wherein said frame includes a corner bar connected to a top end of said rear side, and wherein said guide elements are located at opposite ends of said corner bar.

4. A collapsible road barrier according to claim 1, including a plurality of energy absorption elements extending in spaced apart fashion between said rear wall of said foundation pit and said rear side of said frame.

5. A collapsible road barrier according to claim 1, including a plurality of stretching elements connected in spaced apart fashion between said front side of said frame and said front wall of said foundation pit.