Composite guardrail post

Details Composite guardrail post Composite guardrail post

1996-03-25

1997-08-26

Knight, Anthony

Fences

Highway guard

256 19, E01F 1500

Patent

active

056603754

ABSTRACT:
An improved guardrail post which eliminates environmental and health hazards of conventional wood and steel posts resulting from the use of chemical coatings, is disclosed. The improvement is achieved by the use of composite construction which is not subject to the decay, insect damage and corrosion of wood and steel posts which require the application of chemical coatings. Conventional composite posts, tubular in shape and well-known in the prior art, are easily adapted for application and use as guardrail posts. In the preferred embodiment of the present invention, ground, recycled plastic is used as a filler material to prevent damage to the posts which may result from overtightening of guardrail attachment bolts. The plastic filler material may be omitted for an alternate embodiment. The guardrail post may be constructed by pultrusion or related processes.

REFERENCES:
patent: 1793675 (1931-02-01), Camp
patent: 3574104 (1971-04-01), Medler
patent: 3704861 (1972-12-01), Glaesener
patent: 3784167 (1974-01-01), Glaesener
patent: 3963218 (1976-06-01), Glaesener
patent: 4645375 (1987-02-01), Carney
patent: 4713645 (1987-12-01), Razavi
patent: 5024866 (1991-06-01), Goode
patent: 5152507 (1992-10-01), Lee
patent: 5172891 (1992-12-01), Chen
patent: 5294151 (1994-03-01), Goode

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