Valve with delayed action closing means
US4058286A · kind A · utility
5Cited by
12References
5Claims
0Family size
Inventor
Key dates
| Filing date | Sep 18, 1973 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Sep 18, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86389
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve having a delayed action closing means comprises a membrane positioned above the valve seat and partitioning the interior of the valve casing into a first and second chamber, a water wheel in the first chamber positioned to be rotated by the incoming water, a shaft from the water wheel acting on a train of gears in the second chamber, an auxiliary valve actuated by the train of gears after the passage of a predetermined quantity of water, a by-pass provided from the upstream part of the valve and leading into the second chamber, and a connection from the auxiliary valve leading into the downstream part of the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.