Spray apparatus having an agitation line
US5934561A · kind A · utility
Inventor
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B9/0423
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Agricultural or horticultural spray apparatus of the kind comprising a holding tank having a liquid to be sprayed, at least one spray nozzle, a pump for moving liquid from the tank and for causing the liquid to be sprayed from the nozzle, and a return line from the nozzle to the tank, characterized in that the return line is provided between the pump and the spray nozzle, and characterized by a venturi device for causing a depression in the return line to cause liquid to flow from the nozzle to the tank. The apparatus includes a line from the tank to each nozzle through which liquid is drawn when a depression is applied to the return line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.