FIELD: items for personal use.
SUBSTANCE: respirator (10) includes a fastening system (13, 16), a mask base (12), and an exhalation valve (14). The exhalation valve (14) may include a valve seat (20) and a flexible flap (22) meshed with the valve seat. The flexible flap may contain one or more materials that can cause the flap (26) flashing when moving from the closed position to the open position. With a flashing valve, it is easier for the user to make sure that the valve is working properly.
EFFECT: better convenience.
18 cl, 14 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FOLDABLE RESPIRATORY FACE MASK WITH EXHALATION VALVE | 2016 |
|
RU2697606C1 |
| EXHALATION VALVE AND RESPIRATOR WITH EXHALATION VALVE | 2017 |
|
RU2719873C1 |
| RESPIRATOR WITH NON-CIRCULAR EXHALATION VALVE MOUNTED IN THE CENTRE OF MASS | 2014 |
|
RU2650478C1 |
| FILTERING FACE MASK RESPIRATOR WITH WELDED INDICATING COMPONENT HIDDEN IN FOLD | 2013 |
|
RU2622826C2 |
| PERMABLE REFLECTOR MADE FRON NANOPARTICLES | 2007 |
|
RU2446391C2 |
| RESPIRATOR WITH VALVE AND GRIPPING PART | 2015 |
|
RU2677082C2 |
| FULL FACE MASK FOR ELECTRICALLY DRIVEN AIR-PURIFYING RESPIRATOR (PAPR) | 2011 |
|
RU2566910C2 |
| SERVICE LIFE END DISPLAYING SYSTEMS FOR MULTI-LAYER FILTERING CARTRIDGES | 2014 |
|
RU2617483C2 |
| RESPIRATOR WITH GRIPPING TAB | 2015 |
|
RU2677088C1 |
| FILTERING FACE-PIECE RESPIRATOR WITH INCREASED FRICTION PERIMETER | 2014 |
|
RU2649373C2 |
