Face mask assembly
US11266861B2 · kind B2 · utility
0Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2018 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Dec 10, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/025
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A face mask includes a valve protector between a strap and an exhalation valve thereof. The valve protector's thickness defines a spacing between the strap and a strap retainer that is positioned on a mask body, disposed over the exhalation valve, and receives the strap. This spacing controls an extent of friction between the strap and the strap retainer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.