Diving mask having a body provided with an exhaled air exhaust device including a check valve
US11225308B2 · kind B2 · utility
4Cited by
1References
21Claims
0Family size
Inventors
Key dates
| Filing date | Mar 30, 2018 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Sep 12, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C2011/165
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to a diving mask comprising a body having a faceplate and a flexible skirt, and a snorkel extending a top portion of the body. The body includes an exhaled air exhaust device that puts the bottom chamber in fluid-flow connection with the air duct of the snorkel. The exhaled air exhaust includes at least a first check valve arranged to allow exhaled air from the bottom chamber to flow towards the air duct of the snorkel during a stage in which the user is breathing out, the first check valve being closed during a stage in which the user is breathing in.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.