Assembly of solenoid-controlled pilot-operated valve
US6685158B2 · kind B2 · utility
38Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2001 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Feb 5, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/402
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A solenoid-controlled pilot-operated valve includes an operator assembly containing a solenoid that operates a pilot valve. The pilot valve in turn controls a pressure-relief opening from a chamber whose pressure tends to hold a main valve closed until the pressure is relieved. The pilot-valve body, which forms the pilot-valve inlet, outlet, and seat is secured to the operator assembly's stationary part, and the resultant structure is only then assembled together with the main valve. This enhances positioning repeatability and thus consistency in valve timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.