Irrigation control system
US4567563A · kind A · utility
65Cited by
9References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1983 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Jul 11, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Irrigation control apparatus includes: PA0 (a) a mast having a lower portion adapted to be removably inserted into the earth, PA0 (b) soil moisture sensing structure associated with or separate from said lower portion of the mast, and PA0 (c) data transmitting apparatus on an upper portion of the mast and operatively connected with said sensing structure for transmitting to a central station data indicative of soil moisture conditions at the location of the mast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.