Method and apparatus for freeze prevention of irrigation systems
US5694963A · kind A · utility
19Cited by
0References
18Claims
0Family size
Inventors
Key dates
| Filing date | Dec 4, 1995 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Dec 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86445
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed an apparatus for freeze prevention protecting an irrigation system. The response of the apparatus depends on environmental conditions. At a first temperature condition, the irrigation system is shut down. At a lower temperature condition, the system remains shut down and heat is delivered to the above ground portions of the system. In the event temperatures continue to decrease, a full drainage of the above ground portion of the irrigation system will be accomplished and alarm notification will be given.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.