RESPIRATOR AS FILTERING FACE MASK, CONTAINING MASK BASIS WITH FOLD Russian patent published in 2017 - IPC A62B23/02 

Abstract RU 2638629 C2

FIELD: personal demand items.

SUBSTANCE: respirator in the form of a filtering mask contains a mounting site and a mask basis containing a filtering structure and having the first side edge on the first side of the mask basis, the second opposite side edge on the second side of the mask basis and a perimeter. At that, the filtering structure on the side edges is folded in a three-layer fold and secured to itself at a location spaced from the perimeter to form a longitudinally extending fold. The mask basis also contains a non-fixed fold site between the bond location and the first side edge, and the mask basis contains the first and second side trims located on the first and second opposite sides. The first and second side trims are folded inwards to contact the filtering structure when the mask basis is in the application configuration. The longitudinally extending fold is made extending from the first side trim to the second side trim.

EFFECT: fold prevents crushing of the cup-shaped form of the respirator.

5 cl, 10 dwg

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RU 2 638 629 C2

Authors

Duffy Dean R.

Dates

2017-12-14Published

2014-08-14Filed