Fluid control valve
US4852608A · kind A · utility
19Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1988 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Oct 4, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7905
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The valve, depicted as of the plate-type, has a ported valve seat, stop plate, and valving element (movable between the plate and seat) biased toward the seat by compression springs. Eight sets of compression springs are employed, in the disclosed embodiment, and each set comprises a pair of helical, counterwound (compression) springs concentrically nested together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.