Sleeve valve for residential and commercial irrigation systems
US7665713B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Mar 10, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/402
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sleeve valve includes a rigid mandrel with a plurality of openings and a generally cylindrical elastomeric sleeve that surrounds the mandrel. A generally cylindrical rigid sleeve valve housing surrounds the elastomeric sleeve and defines a control chamber between the elastomeric sleeve and the sleeve valve housing. A pilot valve is mounted to the sleeve valve housing for supplying pressurized liquid to, and venting pressurized liquid from, the control chamber through a first passage formed in the sleeve valve housing. A filter screens debris from pressurized liquid entering an inlet end of the sleeve valve housing before it enters a second passage that communicates with the pilot valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.