Sprinkle with velocity control disc
US5927607A · kind A · utility
78Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Feb 26, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7867
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pop up sprinkler unit includes a housing having an inlet including a passage for connecting to a source of fluid such as water or air, a pressure responsive inlet valve assembly including a valve seat surrounding the inlet, a valve member having annular sealing normally biased into engagement with the seat, and a velocity control disc mounted on the valve member and extending into the passage at the inlet, the velocity control disc metering initial inlet fluid for controlling the rate of opening of the valve for controlling flow of fluid through the valve to a nozzle and extension of a riser to an extended position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.