| 摘要 |
A respirator consists of the filtering half-face mask designed as multilayer circle with folded and welded edge – obturator with strangulator inside representing the aluminum plate connected with the elastic cord, six-lobe distance piece and the head harness comprising two ribbons of cotton fabric adhered to the half-face mask at the site where obturator joins the ends of the horizontal lobes of the distance piece. The head harness consisting of two segments of the elastic cord of the specified length, with their ends stretching outside from inside of the mask via the openings in the build-ups on the horizontal lobes of the distance piece, is fixed at the specified position with fast-acting fixing device. |
