Patent ID: 6412485
Filing Date: 2002-07-02
Classification: A62B

Abstract:
A surface breathing vent device for a mask which permits the user wearing the mask to breath ambient air, the mask having an oral-nasal cup having a first port for communicating with a regulator and a second separate communications port, said breathing vent device comprising:a) support coupling means for coupling said breathing vent device to said communications port of said mask, said coupling means provided with a bushing portion adapted to be in fluid communication with the oral-nasal cup; b) a barrel axially movable within said bushing portion of said support coupling means, said barrel having a first open end, a second closed end, and at least one vent opening in fluid communication with said first open end, said barrel has a cross-sectional area and wherein said at least one vent opening is larger than the cross-sectional area of said barrel; and c) sealing means between said barrel and said bushing portion, wherein when said barrel is axially movable within said bushing portion from a first position where said at least one vent opening is at least partially exposed to ambient air, to a second position where said at least one vent opening is enclosed within said bushing portion and said sealing means provides a substantially water-tight seal between said at least one vent opening and the ambient air.