Breathing mask and flushing arrangement for a breathing mask
US11241596B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2016 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A breathing mask, including a mask body having an inner area; a breathing valve configured to control the flow of breathing gas into the inner area of the mask body, the breathing valve comprising a membrane having an outer surface; and a flushing arrangement, comprising: a flushing area located adjacent the outer surface of the membrane; at least one exhalation chamber configured to receive exhaled air from the inner area of the breathing mask; and at least one channel fluidly connecting the flushing area and the at least one exhalation chamber; wherein, during user inhalation, air from the at least one exhalation chamber flows through the at least one channel into the flushing area, and during user exhalation, air from the flushing area flows through the at least one channel into the at least one exhalation chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.