Curtain valve
US3951168A · kind A · utility
28Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Dec 27, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S251/901
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Described herein are fluid flow control valves of the type wherein a perforated orifice member is interposed between the valve inlet and outlet, and a flexible membrane is provided which selectively covers and uncovers the perforations in the orifice member. A valve stem is provided which is attached to an edge of the membrane and by reciprocal movement of this valve stem the membrane may be peeled from a surface of the orifice member to expose perforations for fluid flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.