Regulated flow-restrictor devices particularly useful in drip irrigation
US5829685A · kind A · utility
58Cited by
7References
19Claims
0Family size
Inventor
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A regulated flow-restrictor device particularly useful as a drip irrigation emitter includes an elastomeric element constructed and supported such that it is non-uniformly deformable along its length in response to an increase in fluid pressure to effect a sequential closing of clearances in the flow-reducing passageway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.