Vortex-diode check valve with flexible diaphragm
US4259988A · kind A · utility
9Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Sep 17, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2115
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vortex-diode check valve comprises a short cylindrical working chamber with an axial inlet port entering axially through a first end wall at a short distance from the central portion of a second end wall and a tangential outlet port exiting tangentially through a circular side wall. The ratio of fluid flow resistances, between flows in the reverse and forward directions, is markedly increased by configuring at least one end wall as a flexible resilient diaphragm, permitting relative motion between the second end wall and the axial inlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.