Composite guardrail post
US5660375A · kind A · utility
Inventor
Key dates
| Filing date | Mar 25, 1996 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Mar 25, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F15/0461
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.