Fluid flow control device
US5687763A · kind A · utility
36Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Feb 12, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86759
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid flow control device for use in a variable fluid restrictor control valve or severe service control valve. These valves employ a moveable plug and are used to control high pressure fluids e.g. superheated steam. The control device of the invention includes annular discs with fluid passageways through them. Pairs of discs together form a radial passageway for fluid between the interior of a stack of discs and its radially outer circumference. The passageways may have a smaller cross-section at a mid-region of the disc than at the radially inner or outer side of the disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.