Disposable protective mask
AssigneesMax Klein, Frederick G. Crane, Jr.
InventorMax Klein
Life of this patent
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Abstract
A protective mask formed from a porous non-woven sheet material which is made of glass fibers and a suitable binding agent, and which may optionally include a gas adsorbent substance. The mask protects the respiratory system of the wearer from the effects of toxic gases and the like.
Claims28
A protective mask comprising a non-woven, air-permeable sheet material consisting essentially of glass fibers, a binding agent and polymer micro-bits derived from an expanded, non-brittle thermoplastic polymer selected from the group of a styrene polymer, a polyolefin having from 2 to 6 carbon atoms, or co-polymers or blends thereof, or micro-bits of a flexible foamed polyurethane, said polymer micro-bits being substantially completely free of intact cells of the expanded polymer from which they are produced;
- said sheet material being adapted to sealingly engage the wearer and envelop at least a portion of the face of the wearer, including the nose and mouth;
- and means for securing the mask in place during use.
Dependencies are inferred from the claim text.