Culvert structure
US4650369A · kind A · utility
13Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Nov 27, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F5/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A low headroom culvert is provided wherein a series of shallow arch-shaped flat metallic sections are overlappingly secured together. Torsion and buckle resistant reinforcing cross ribbing elements are affixed to the exterior culvert sections at selected points along the culvert to form girder-like beams. The improved culvert structure provides reduced hydraulic flow resistance, can be easily installed and requires less metal for its manufacture in comparison to culverts made of corrugated sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.