Solenoid actuated pilot valve for irrigation system valve
US7503346B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Mar 13, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86686
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A solenoid actuated pilot valve includes a pilot valve housing defining a pilot valve chamber and a solenoid. The solenoid includes and end cap connected to the pilot valve housing, a reciprocable plunger, and a piston having a shaft with a first end connected to and end of the plunger and a second end connected to a piston head. The end cap has a bore through which the shaft of the piston reciprocates and a first port separate from the bore. A first seal on a first side of the piston head is provided for sealing a first end of the first port. A second seal on a second side of the piston head is provided for sealing a first end of a second port in the pilot valve housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.