Valve with pressurization rate reduction device
US6957661B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2003 |
| Grant date | Oct 25, 2005 |
| Priority date | — |
| Expiry date | Nov 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8704
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve includes a housing assembly, a stem assembly and a surge suppression device. The surge suppression device includes an initial flowpath between the valve inlet and the outlet, a primary flowpath between the inlet and the outlet, a first valve assembly and a second valve assembly. The first valve assembly is coupled to the stem assembly and threadably engages the housing assembly and structured to move between a first, closed position wherein the primary flowpath is blocked and a second, open position wherein the primary flowpath is not blocked. The second valve assembly is threadably coupled to the housing assembly and structured to move between a first, closed position wherein the initial flowpath is blocked and a second, open position wherein the initial flowpath is not blocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.