End assembly for roadway guard rail

Details End assembly for roadway guard rail End assembly for roadway guard rail

1975-10-29

1977-09-13

Shedd, Wayne L.

Fences

Highway guard

B66F 308

Patent

active

040477010

ABSTRACT:
The end of a roadway guard rail which is spaced above and extends generally parallel to the ground is rigidly secured to a rigid beam at least 25 m long having a far end sunk in the ground and supported between its ends by a plurality of vertically compressible posts. The beam may be a metal shell filled with synthetic-resin foam. The posts may be provided internally with shock absorbers, or with springs, or may be made of sheet metal with a synthetic-resin core. In any case the posts are vertically compressible so as to absorb the kinetic energy of a vehicle colliding with the beam in order to slow the vehicle down without flipping it over. The upper surface of the beam is provided with a friction layer that further aids in slowing down a colliding vehicle.

REFERENCES:
patent: 3369634 (1968-02-01), Mazelsky
patent: 3603562 (1971-09-01), Glaesener
patent: 3704861 (1972-12-01), Glaesener
patent: 3705709 (1972-12-01), Andriussi
patent: 3784167 (1974-01-01), Glaesener

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