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 |
|---|---|---|---|
| EXHALATION VALVE AND RESPIRATOR WITH EXHALATION VALVE | 2017 |
|
RU2719873C1 |
| FOLDABLE RESPIRATORY FACE MASK WITH EXHALATION VALVE | 2016 |
|
RU2697606C1 |
| 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 |
| FULL FACE MASK FOR ELECTRICALLY DRIVEN AIR-PURIFYING RESPIRATOR (PAPR) | 2011 |
|
RU2566910C2 |
| RESPIRATOR WITH VALVE AND GRIPPING PART | 2015 |
|
RU2677082C2 |
| SERVICE LIFE END DISPLAYING SYSTEMS FOR MULTI-LAYER FILTERING CARTRIDGES | 2014 |
|
RU2617483C2 |
| RESPIRATOR WITH GRIPPING TAB | 2015 |
|
RU2677088C1 |
| NARROW-BAND THIN-FILM FABRY-PEROT INTERFEROMETER | 1994 |
|
RU2078358C1 |
