Method and apparatus for the chemical treatment of plants
US4328821A · kind A · utility
Inventor
Key dates
| Filing date | May 27, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | May 27, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87338
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for the chemical treatment of plants using a mixing tank connected to the inlet side of a pre-existing irrigation system having a shutoff valve and antisiphon valve. The tank is connected through an antisiphon valve and a throttling valve at the top of the tank to the high pressure side of the pre-existing shutoff valve and antisiphon valve using a saddle connector valve and flexible tube. The bottom of the tank is connected to the low pressure side of the pre-existing shutoff valve and antisiphon valve using a second saddle connector valve and flexible tube. Chemical to be dispersed is placed in the tank. The connector valves are first both opened while the throttling valve remains closed. Next the shutoff valve is opened to commence irrigation. Low pressure water backflows to fill the tank through its bottom connection, and the low water pressure is read on a gauge connected to the tank. The throttling valve on the tank is then opened sufficiently to increase tank pressure a calibrated amount. After sufficient time has lapsed for the calibrated chemical flow rate, the connector valves are closed, and the flexible tubes may be disconnected to drain and store…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.