Surge prevention device
US6622743B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1999 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure oxygen cylinder and a medical pressure regulator. The valve also may be used for other purposes. The surge prevention valve may have a housing with an inlet and an outlet. A seal unit may be used to close the main flow path from the inlet to the outlet, and a bleed passageway may be provided in the seal unit to bypass the main flow path. The valve may have an actuator for opening the bleed passageway and for moving the seal unit to open the main flow path. According to a preferred embodiment of the invention, a manual push-then-turn operation is used to open the valve. The actuator may be used to threadedly move the seal unit toward and away from the valve seat to close and open the main flow path. In addition, a valve rod may be provided for closing the bleed passageway. The valve rod may be slidably located within the seal unit and movable by pushing down on a handle or a handle button on the valve. The present invention also relates to a method of operating a high pressure valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.