REUSABLE PROTECTIVE MASK Russian patent published in 2021 - IPC A41D13/11 A62B18/02 

FIELD: wearing apparel.

SUBSTANCE: invention relates to the apparel industry, namely to protective clothing designed for protection of the human respiratory tract from ingress of harmful substances into the body, from dust and other atmospheric contaminants. The substance of the invention consists in the fact that the reusable protective mask includes an upper, middle and lower parts made two-layered, mirror-symmetrical relative to a vertical axis, inseparably bound with each other by means of seams, and is provided with means of attachment on the face. The middle part constitutes the main part and is made in form of a two-layer rectangle with the dimensions of 20×10 cm, forming an entrance between the top layers to the compartment wherein a replaceable filter is located the upper edge of the outer layer whereof is inseparably connected with the curvilinear cut of the upper part, which is a nose part, formed from a rhombus with the size of the large and small diagonals of 16 cm and 9 cm, respectively. The sides of the corners near the small diagonal therein are rounded, and the part itself is folded in half along the long diagonal, wherein the equivalent lower part, which is a chin part, is inseparably attached by the curvilinear cut thereof to the long lower edge of the main part from the side of the inner layer, wherein the short opposite edges of the main part have casings accommodating elastic bands, each at least 25 cm in length, closed in a loop and equipped with an elastic band retainer.

EFFECT: creation of a reusable mask ensuring, by means of structural elements, a tight fit on the face of a user with any anatomical shapes and providing reliable protection not only from dust and dirt, but also from bacteria and viruses.

1 cl, 2 dwg