Irrigation emitters having reduced sensitivity to clogging
US5829686A · kind A · utility
Inventor
Key dates
| Filing date | May 1, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | May 1, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A drip irrigation emitter defining a flow control passageway having an inlet to communicate with a supply of pressurized water, and an outlet to communicate with a water discharge opening, includes an obstruction formation between the flow control passageway outlet and the water discharge opening effective to produce a relatively small obstruction to the flow in the direction from the flow control passageway outlet to the water discharge opening, and a relatively large obstruction to the flow in the reverse direction such as to reduce the possibility of the entry of external solid particles into the emitter via the water discharge opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.