Drainage channel with means for maintaining proper slope during installation
US4498807A · kind A · utility
42Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Sep 8, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/60
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An anchor 20 is disclosed for supporting an open top drainage channel 40 within a trench. Anchor 20 permits accurate placement and easy adjustment of channel 40 and thereafter permits the entire channel 40 to be embedded in concrete in a single pour. The anchor 20 is embedded within the earth defining the trench and counteracts the natural buoyancy so that channel 40 does not float upwardly in the unhardened concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.