Exhaust valve shroud for a personal protection respiratory device
US11052208B2 · kind B2 · utility
1Cited by
39References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2017 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Mar 19, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K15/148
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An exhaust valve shroud for a personal protection respiratory device, the shroud comprising a main body defining an inlet for receiving exhaled air from an exhalation valve, an outlet for emitting exhaled air from the shroud, and a perimeter flow conduit for carrying the exhaled air from the inlet to the outlet, wherein the perimeter flow conduit includes a bifurcated transition section which receives air from the inlet in a substantially forward facing direction and directs the air into first and second substantially downwardly extending flow passages, each of which passages are in communication with the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.