Irrigation system
US4522338A · kind A · utility
Inventor
Key dates
| Filing date | Dec 30, 1982 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Dec 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A self-propelled irrigation system that is fully automated to irrigate regular and irregular shapes of land. The system includes a self powered cart and hose connection system by which access is made to various points along the length of a water supply main. The cart is powered to move along a prescribed path defined by a ground mounted electrical conductor wire. The cart will follow the path defined by the wire and perform various functions at points along the length of the conductor as initiated by signal emitters located along the path. Throughout the irrigation sequence, hose connection and disconnection, the entire hose length is kept suspended above the ground surface as not to interfere with the adjacent crop. Several sprinklers on the cart frame are independently controlled to produce an even application of water over the prescribed ground area. This is done by selectively varying the rotational speed of the sprinklers. Corners of selected areas are irrigated by a sprinkler head having a pressure control valve to vary the water throw distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.