Gauze mask structure capable of separating inhalation and exhalation
US10625102B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2019 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | May 14, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved gauze structure capable of separating inhalation and exhalation includes: an outer layer member, a top and a bottom portions thereof are formed with at least one first through hole, a center at the bottom portion is formed with a first front hole; an inner layer member, a top and a bottom portions thereof are formed with at least one second through hole, a center at the bottom portion is formed with a second front hole, at least one fastening unit is disposed at two sides; an inner mask member, used for covering a mouth, and formed with at least one third through hole and a connection part; and at least two air valves, disposed corresponding to the first and the second through holes at the top and bottom portions of the outer and the inner layer members and the third through hole of the inner mask member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.