Hydroponics
US4310990A · kind A · utility
51Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | May 6, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | May 6, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/21
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A structure made from tubular elements which interfit to form a plural compartment hydroponic unit. The upper compartment is filled with inert root medium, houses a fluid dispensing unit, and contains slits which communicate with the lower compartment which constitutes a resevoir. The tubular housings are substantially sealingly interconnected. The lower compartment contains a nutrient inlet provision which communicates via a manifold housed in the lower compartment with the interior of the upper compartment. The lower compartment also contains a drain provision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.