Miniature respiratory apparatus

Details Miniature respiratory apparatus Miniature respiratory apparatus

1988-10-28

1990-04-10

Burr, Edgar S.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820611, 12820618, 12820718, A62B 700, A62B 904, A62B 2302, A62B 710

Patent

active

049151053

ABSTRACT:
A respiratory apparatus including an air filter; a hose connected to the filter; a nose-connected breathing pipe connected with the hose and having two inhaling valves formed on two side openings of the pipe, two nostril connectors protruding rearwardly from the pipe to fluidically connect to a wearer's nostrils, and an exhalation valve formed in the front portion of the pipe; whereby upon an inhalation by the wearer, a clean air stream is inhaled into the wearer's nose through the inhalation valves, and upon an exhalation, exhaust air is discharged through the exhaling valve. The apparatus being comfortable to wear and providing improved dissipation of facial heat.

REFERENCES:
patent: 443191 (1890-12-01), Illing
patent: 718785 (1903-01-01), McNary
patent: 838434 (1906-12-01), Morgan
patent: 1192186 (1916-07-01), Greene
patent: 1221246 (1917-04-01), Travers
patent: 1270404 (1918-06-01), Garnett
patent: 1443820 (1923-01-01), Hudson
patent: 1610793 (1926-12-01), Kaufman
patent: 2100374 (1937-11-01), Biever
patent: 2702089 (1955-02-01), Engelder
patent: 2792000 (1957-05-01), Richardson
patent: 3731678 (1973-05-01), Pyzel
patent: 3902486 (1975-09-01), Guichard

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