Valves for controlling or preventing fluid flow
US4284098A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1979 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Feb 6, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/3367
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve for controlling or preventing fluid flow has a shut-off element controllably movable in an axial direction between a first position corresponding to a fully open condition of the valve and a second position corresponding to a fully closed condition of the valve, PA0 a valve seat with which the shut-off element is capable of fluid-tight sealing engagement when in the said second position, PA0 drive means operatively connected to the shut-off element and capable of controllably transmitting a drive to the shut-off element to effect the said controlled movement thereof towards one of either of the said first and second positions thereof, PA0 said drive means including a connecting member transmitting the drive to the shut-off element, the shut-off element moving relatively to said connecting member in said axial direction when driven by said drive means, and furthermore being moved axially when said connecting member is moved axially, PA0 a housing defining a chamber, PA0 a diaphragm within said chamber and having a central region attached to said connecting member and a peripheral region attached to said housing, whereby the diaphragm supports said connecting member and is ca…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.