System and method for protecting plants from freeze damage
US4763440A · kind A · utility
Inventor
Key dates
| Filing date | Jul 1, 1983 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Jul 1, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G13/21
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system and method for protecting a ground plot of foliage plants or the like from freezing contemplates a series of ground-level sprinklers throughout the plot and a shade cloth covering of the type having uniformly dispersed openings therein. Elevated sprinklers are provided above the shade cloth and ground-level sprinklers. During periods of freezing ambient temperatures, water is sprinkled through the elevated sprinklers whereby the water freezes in the openings of the covering and holds heat released during operation of the ground-level sprinklers under the covering. When the water droplets freeze into a thin sheet of ice on the covering, the ground-level sprinklers are turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.