First-aid gas mask

Details First-aid gas mask First-aid gas mask

1989-10-27

1991-04-02

Burr, Edgar S.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820512, 12820527, A62B 710

Patent

active

050039741

ABSTRACT:
The present invention is to provide a kind of first-aid gas mask, which uses an air filter to filtrates toxic gas and to further let the well filtrated gas be delivered to the transparent cover around the mouse and nose of the user for inhalation, which transparent cover is having an elastic band made on the bottom opening for fastening, through which bottom opening the exhalation is exhausted. This invention is easy to operate and practical for use in first-aid and, more particularly for use in emergent case during fire or pit disaster so as to help the user to escape with one's life.

REFERENCES:
patent: 1262566 (1918-04-01), Rhodes et al.
patent: 1945919 (1934-02-01), Seijo
patent: 2262522 (1941-11-01), Yant et al.
patent: 2896617 (1959-07-01), Gibbons
patent: 3525334 (1970-08-01), Braman
patent: 3736927 (1973-06-01), Misaqi
patent: 4233972 (1980-11-01), Hauff et al.
patent: 4350507 (1982-09-01), Greenough et al.
patent: 4572178 (1986-02-01), Takase et al.
patent: 4590951 (1986-05-01), O'Connor
patent: 4815458 (1989-03-01), Sing

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