Device for soil irrigation
US4162863A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1977 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Oct 14, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G25/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An irrigating device formed from an absorbent product, such as a polymeric pulp or hydrophilic textile contained within a filtering envelope, such as a woven, knitted or non-woven fabric. The device is placed in the ground in communication with a source of water which may be above or below ground. The irrigation device provides for a uniform rate of irrigation of the soil in which it is placed, requires less water than conventional irrigation devices providing the same overall coverage, and is not subject to dogging or blockage, as with conventional irrigation devices. In one embodiment for preparing the irrigation device, the absorbent product is in the form of a tow of hydrophilic continuous filament and the textile filter envelope is produced in a continuous in-line operation in conjunction with the production of the tow. The irrigation device can be applied to the irrigation of soils to facilitate the growth of plants, trees, crops and the germination of seeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.