Accession Number : AD0163702

Title :   Pressure Compensated Inhalation-Exhalation Valve for Pressure Breathing Mask.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Seeler,Henry W.

Report Date : 04 OCT 1960

Pagination or Media Count : 5

Abstract : The invention relates to a valve assembly, and more particularly to a pressure compensated inhalation and exhalation valve assembly for pressure breathing in a high altitude mask. High altitude masks in use currently have three valves built into them. This causes the masks to be unnecessarily large and uncomfortable. The improved valve assembly took over the work of these valves by compactly combining the function of an inhalation valve and a pressure compensated exhalation-inhalation valve with the result that breathing masks could be made smaller and lighter.

Descriptors :   (*BREATHING MASKS, *PATENTS), (*PRESSURE BREATHING, BREATHING MASKS), RESPIRATION, HIGH ALTITUDE, VALVES

Subject Categories : Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE