Respirator fit check sealing devices and methods
US11219787B2 · kind B2 · utility
0Cited by
158References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 15, 2017 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Feb 22, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/084
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respiratory protection device that includes a valve assembly operable between an open configuration and a closed configuration. In some exemplary embodiments, the respiratory protection device includes an elastomeric seal, and a valve assembly and a breathing air source component that are in sealing engagement with the elastomeric seal when the valve assembly is in a closed configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.