Device for establishing and breaking a fluid communication
US4049233A · kind A · utility
17Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Sep 30, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L37/62
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
First and second walls form first and second openings, respectively, which face each other in spaced, substantially coaxial relation. A device surrounding the first opening, for establishing and breaking fluid communication between the openings, comprises an inflatable ring which, when inflated, seals against the second wall around the second opening to complete a fluid flow path between the openings, and a circular body located in said flow path coaxially of the ring. When deflated, the ring bears sealingly against said body to prevent flow through the first opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.