Exhalation valve assembly
US4712580A · kind A · utility
68Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1986 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Mar 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/784
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An exhalation valve assembly for use in a volume ventilator circuit is disclosed that comprises a valve body defining a chamber with a gas inlet conduit and a gas outlet conduit, both in flow communication with the chamber. A diaphragm extends across the chamber and selectively closes off the gas inlet conduit. A concentric ring support structure is disposed concentrically about the gas inlet conduit and is configured so as to support a portion of the diaphragm over the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.