Head harness for respiratory mask
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 21, 2000
Issued Date -
N/A
app pub date -
Aug 19, 1997
filing date -
Apr 22, 1987
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The head harness includes at least one expandable strap whose ends are connected to the mask for constituting a loop. The strap includes an element which is inflatable by pressurized gas for lengthening the strap up to a size sufficient for the user to locate the harness over his head. Pressurized gas is supplied to the element for increasing its size upon actuating of a manually controlled valve. Upon release of the valve, the strap contacts the head and maintains the mask. A selection valve authorizes venting of the inflatable element when in an 'emergency' position and maintains a residual pressure in the inflatable element when in a 'comfort' position. The harness or a storage box for the mask are designed for preventing storing of the mask in 'comfort' position.
First Claim
Family
International Classification(s)
Cited Art Landscape
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