Emergency breathing apparatus

Details Emergency breathing apparatus Emergency breathing apparatus

1991-08-01

1994-03-15

Burr, Edgar S.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820212, 12820524, A62B 1700

Patent

active

052938646

ABSTRACT:
An EBA system is provided which includes a primary source of pressurized air, a secondary source of pressurized air, hoses leading the primary and secondary sources of pressurized air to an EBA valve, and two hoses for directing pressurized air to the interior of a protective suit for over-pressurization and to a mouthpiece of a user. The valve is constructed and arranged to operate under two modes of operation, in one of which air from the primary air source is directed to an over-pressurization hose and an inhalation hose while air from the secondary air source hose is blocked, and a second mode in which air from the secondary or auxiliary supply is directed to the inhalation hose but not to the pressurization hose.

REFERENCES:
patent: 2814290 (1957-11-01), Holmes
patent: 3190287 (1965-06-01), Miller, Jr.
patent: 3628531 (1971-12-01), Harris
patent: 4328798 (1982-05-01), Isaacson
patent: 4619255 (1986-10-01), Spinosa et al.
patent: 4841953 (1989-06-01), Dodrill
patent: 4847914 (1989-07-01), Suda
patent: 4881539 (1989-11-01), Pasternack
patent: 5027807 (1991-07-01), Wise et al.

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