Discharger structure on earloop face masks
AssigneeMtj Technology Co., Ltd.
InventorJEN-WEI LIN
Life of this patent
Estimating the term…
Abstract
A discharger structure on earloop facemasks includes at least one opening hole on an earloop facemask covered by a cover. The cover is in a streamline shape and has a passage space for airflow. A check valve is disposed in the opening hole at an inner side of the cover, and the cover further has a discharging hole at an opposite side of the check valve, defining an area within the passage space between the check valve and the discharging hole for airflow. Thereby the check valve is closed by a diaphragm when air pressure within the facemask is negative, and the check valve is opened by the diaphragm when air pressure within the facemask is positive, so as to control airflow through the check valve.
Claims3
A discharger structure on earloop facemasks, comprising:
- an earloop facemask having a least one opening hole at a position near nostril of human faces when worn on;
- at least one discharger structure including:
- a cover arranged in a streamline shape covering said opening hole from outside, said cover including a passage space therein;
- a check valve disposed on said opening hole, said check valve including a body protruding from said opening hole into said passage space and a diaphragm disposed on a top periphery of said body and partially fixed thereon;
- a discharging hole arranged on said cover at an opposite end from said check valve, defining an area in said passage space between said check valve and said discharging hole;
- and
- a rotation structure engaged on said check valve for said cover to rotate thereby;
- whereby the check valve is closed by the diaphragm when air pressure within said earloop facemask is negative, preventing from airflow therein;
- and
- whereby the check valve is opened by the diaphragm when air pressure within said earloop facemask is positive, allowing air flowing through.
Dependencies are inferred from the claim text.