Title:
EMERGENCY BREATHING APPARATUS INCORPORATING GAS STORAGE VESSEL COMPRISING A POLYMERIC CONTAINER SYSTEM FOR PRESSURIZED FLUIDS
Document Type and Number:
WIPO Patent Application WO2002038220
Kind Code:
A9
Abstract:
An emergency breathing apparatus includes a hood, a gas storage pack, and a supply conduit connecting the hood and the gas storage pack. The gas storage pack includes a pressure vessel formed from a plurality of hollow chambers, which have either an ellipsoidal or spherical shape, interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The pressure vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The gas storage pack further includes a fluid transfer control system attached to the pressure vessel for controlling fluid flow into and out of the pressure vessel and a housing for containing the pressure vessel. During use, the hood is worn over the head of a person and a breathable gas, supplied by the supply conduit from the pressure vessel to the hood, creates a positive pressure within the hood relative to ambient pressure, thereby permitting the person wearing the hood to breath and protecting the person from noxious gases outside the hood.
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Inventors:
IZUCHUKWU JOHN I
SANDERS STAN A
SANDERS STAN A
Application Number:
PCT/US2001/043005
Publication Date:
August 14, 2003
Filing Date:
November 08, 2001
Export Citation:
Assignee:
MALLINCKRODT INC (US)
International Classes:
A62B7/02; A62B17/04; (IPC1-7): A62B7/02; A62B17/04
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