Digital fluid flow control system with trim adjustment
US3942553A · kind A · utility
20Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Jan 10, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87314
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Individually actuatable digital valve elements in parallel interconnect a fluid source to a receiver. In the flow passage of each valve element, there is a converging-diverging nozzle that feeds into the receiver. A trim adjustment screw is movable along the axis of each nozzle to vary the effective cross-sectional area of such nozzle. The nozzle and screw are part of an insert that can be mounted in the valve body after individual calibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.