Patent ID: 6761162
Filing Date: 2004-07-13
Classification: A62B

Abstract:
A personal emergency breathing system comprising:a canister having an opening and a closure removably carried by said canister for closing said opening; a generally annular air filtration unit within said canister containing air filtering material and defining with said canister an annular passage about said filtration unit for receiving ambient air from an air inlet to said canister, said filtration unit having an axially extending central passageway and inner and outer walls with apertures enabling transmission of ambient air in a generally radial direction from the annular passageway through the walls and filtering material and into the central passageway; an annular filter in said annular passage in communication with said air inlet for receiving and filtering ambient air for flow into said annular passage; a mouthpiece carried by said canister in communication with said central passageway for receiving filtered air from said central passageway and deployable from said canister; a hood carried by said canister enveloping said mouthpiece and deployable from said canister, said hood having an opening for receiving an individual's head and neck whereby the hood, when deployed from said canister, may envelop an individual's head, said mouthpiece and said hood being disposed in a collapsed condition in said canister adjacent said canister opening and between said filtration unit and said closure whereby, upon removal of said closure from said opening, said hood and said mouthpiece are deployable from said canister through said canister opening to a location external to said canister, with said mouthpiece in communication with and receiving filtered air from the filtration unit.