초록 ▼

A mask system and device for an individual including a front portion defining a surface which is generally C-shaped and preferably forms bights or curved surfaces in both the horizontal and vertical cross section. The surface extends from and conforms to a position below the eyes to an area below th

A mask system and device for an individual including a front portion defining a surface which is generally C-shaped and preferably forms bights or curved surfaces in both the horizontal and vertical cross section. The surface extends from and conforms to a position below the eyes to an area below the chin. The mask also includes sides integrally formed with the front portion and positioned adjacent the cheeks or jaw. The surface, in part, defines a cavity between the sides adjacent the individual\s nose and mouth. An exhaust device is affixed to a defined channel formed on one lateral side. The opposite lateral side forms an intake port. Securing straps are provided to retain the mask portion adjacent the face. The exhaust device is provided at the free end of a tube which communicates with the side channel to create a continuous air flow across the cavity and to exhaust stale exhaled air.

대표청구항 ▼

A mask for an individual consisting essentially of: a stiff air-impervious front portion adapted to substantially conform along its top and bottom edges to the surface of a wearer\s face at a position below the eyes and below the chin, respectively, and to cover the nose and mouth, said front portio

A mask for an individual consisting essentially of: a stiff air-impervious front portion adapted to substantially conform along its top and bottom edges to the surface of a wearer\s face at a position below the eyes and below the chin, respectively, and to cover the nose and mouth, said front portion defining a cavity adapted to be positioned in front of the wearer\s nose and mouth; bilateral side portions integral with said front portion and defining side channels adapted to extend along both sides of the individual\s jaws, respectively, said channels communicating with the cavity at a position adapted to be adjacent the mouth and nose, the cavity and channels formed by the mask defining a continuous open passage adapted to pass a wearer\s nose and mouth; means for securing the mask to the wearer; and means for creating a continuous cross flow of ambient air through the passage, from one side channel, across the cavity and out of the other side channel whereby the cross flow of air through the continuous passage removes exhaust gases in the area of the mouth and nose and prevents exhaust contamination being directed forward of the face.