Respiratory protection mask for a compressed air breathing apparatus
US7673630B2 · kind B2 · utility
1Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respirator for a compressed air breathing apparatus including a lung machine controlled by a control membrane and an expiratory valve with an air outlet. The air outlet of the expiratory valve and the control membrane of the lung machine are covered by a common lid spaced from the expiratory valve and control membrane, with there being at least one air discharge opening on the lid that forms a purging space around the control membrane through which air from the air outlet passes so as to move against the control membrane and to the at least one discharge opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.