Crew oxygen mask with improved comfort control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 24, 1999
Grant Date -
N/A
app pub date -
Oct 20, 1997
filing date -
Oct 20, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Inflatable harness respiratory apparatus (10) is provided having an improved comfort control assembly (16) allowing reduction in the engagement force exerted by the fitting surface (20) of the mask (12) against the face of the user. The mask (12) is equipped with an inflatable harness strap element (26) having terminal ends (28, 30) supported on stationary, tubular mask mounts (36) via housing assemblies (38). In one embodiment, the terminal ends (28, 30) are releasably locked onto the mounts (36) by means of locks (52), but are axially shiftable along the length of the mounts (36) in order to adjust the effective distance between the fitting surface (20) and the terminal ends (28, 30). An adjustment button (78) may be depressed in order to disengage the locks (52) and permit shifting of the associated terminal end (28, 30). Alternately, an intermediate comfort position is pneumatically achieved by controlled pressurization of an internal cavity (128) within the housing assembly (88).
First Claim
Family
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Cited Art Landscape
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