MASK COMPRISING FILTER

WIPO Patent Application WO/2021/177615

A1

The present invention relates to a mask which comprises a large area filter to facilitate easy breathing and has excellent aesthetics. The present invention provides a mask which comprises a large area filter to facilitate easy breathing and has excellent aesthetics. The present invention provides a mask comprising: a mask main body formed of soft rubber or soft plastic; filter units which are formed to have certain areas in plural portions of the main body, are installed to protrude out of the main body by forming undercuts in the mask in the direction from the inner surface to the outer surface of the mask, and are provided with a plurality of first ventilation holes penetrating therethrough; inserts which are identical to or smaller than inner spaces of the filter units and are to be inserted in the filter units, wherein the outer surface of each insert is equal to or smaller than the area of an undercut expansion of each filter unit and is greater than the area of an undercut bottleneck portion of the filter unit and the insert includes a plurality of second ventilation holes penetrating therethrough; and a filter which is provided between each of the filter units and each of the inserts and has the area that is greater than the area between the outermost portions of the first ventilation holes and the second ventilation holes.

LEE SOO JUNG (KR)

PCT/KR2021/001699

September 10, 2021

February 09, 2021

Click for automatic bibliography generation  

LEE SOO JUNG (KR)

A62B18/02; A41D13/11; A62B23/02

KR20110055948A	2011-05-26
KR101497280B1	2015-02-27
KR20180134694A	2018-12-19
KR20120010548A	2012-02-03
KR20160000158U	2016-01-15
KR102175223B1	2020-11-05

KWAK, Hyun Kyu (KR)

View/Download PDF      PDF Help

Previous Patent: WAVE GUIDE FILTER

Next Patent: ORGANIC ELECTRONIC DEVICE COMPRISING CAPPING LAYER, AND ELECTRONIC APPARATUS COMPRISING SAME