Low flow valve improvement
US7007916B2 · kind B2 · utility
31Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Apr 22, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/402
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention illustrates an irrigation valve that operates at low flows by providing a guide washer of the valve assembly that prevents diaphragm extrusion. Specifically, the circular channel area of a guide washer of the valve includes spoke-like fins. These fins keep the diaphragm from extruding into the open channel over time, while allowing for easy guide washer manufacturing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.