초록 ▼

An adjustable mask for supplying a desired atmosphere to the wearer is disclosed. This mask may be either an oxygen mask or a mask for removing dust or pollen. The mask has overlapping upper and lower sections. The area of overlap can be made larger or smaller depending on the facial length of the w

An adjustable mask for supplying a desired atmosphere to the wearer is disclosed. This mask may be either an oxygen mask or a mask for removing dust or pollen. The mask has overlapping upper and lower sections. The area of overlap can be made larger or smaller depending on the facial length of the wearer. The area of overlap is larger for a smaller adult, and smaller for a larger adult. Gripping means, shown herein as snaps and eyelets, are provided on both sections in the area of overlap so that the two sections can be adjustably secured to each other. These gripping means can also consist of velcro or any substance allowing the two mask sections to fit together snugly.

대표청구항 ▼

An adjustable mask for supplying a desired atmosphere to the wearer, said mask comprising separate overlapping flexible upper and lower sections, said upper section having a lower portion in overlapping engagement with the upper portion of said lower section, said upper and lower sections being vert

An adjustable mask for supplying a desired atmosphere to the wearer, said mask comprising separate overlapping flexible upper and lower sections, said upper section having a lower portion in overlapping engagement with the upper portion of said lower section, said upper and lower sections being vertically adjustable with respect to each other and which together defined a peripheral edge adapted to cover the wearer\s face and to form an enclosure therewith, one of said sections being inside the other in the area of overlap, the amount of overlap between said upper and lower sections being adjustable in accordance with the height of the wearer\s face, means for transferring a gas to and from said enclosure, and means for adjustably securing the two sections together in overlapping relationship, said means comprising, gripping means carried by at least one of said sections in the portion that overlaps the other, said gripping means being capable of maintaining the two sections in a plurality of different positions relative to each other so that the mask can be made larger or smaller in accordance with the facial dimensions of the wearer.