Head harness for a respiratory mask

Details Head harness for a respiratory mask Head harness for a respiratory mask

1990-05-16

1997-11-25

Lewis, Aaron J.

Surgery

Respiratory method or device

Face mask covering a breathing passage

12820712, 12820524, A62B 1808

Patent

active

056901020

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 actuation 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.

REFERENCES:
patent: 3013556 (1961-12-01), Galleher, Jr.
patent: 3330274 (1967-07-01), Bennett
patent: 3431931 (1969-03-01), Cupp
patent: 3441020 (1969-04-01), Wortz et al.
patent: 3545722 (1970-12-01), Borio
patent: 3599636 (1971-08-01), Gutman
patent: 3599639 (1971-08-01), Spotz
patent: 3792702 (1974-02-01), Delest
patent: 4230097 (1980-10-01), Beaussant et al.
patent: 4437462 (1984-03-01), Piljay et al.
patent: 4664108 (1987-05-01), Ansite
"Eros Quick Donning Mask" by Scott Jul. 1980.

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