Patent ID: 7341056
Filing Date: 2008-03-11
Classification: A61M

Abstract:
1. A portable oxygen supply unit for delivering breathable air with enhanced oxygen content comprising a container for pressurized gas, a mouthpiece with an air discharge opening and an air intake opening, a cylindrically shaped hollow housing with a top wall and a sidewall, said air intake opening of the mouthpiece fluidly connected to the top wall of the hollow housing, at least one inlet in the hollow housing flowably connected to ambient air, said sidewall having a circumferential ridge on the inside of the hollow housing, said sidewall having a depending skirt that forms a hood over an upper end of the container, a tilt valve with a stem extending above a mounting cup, said mounting cup having a bottom wall and a peripheral skirt with a free end under which the ridge of the sidewall of the hollow housing is snapped to form an airtight seal between the hollow housing and the mounting cup, said container for a pressurized gas having an oxygen content exceeding ambient air, said container sealed to the tilt valve by the mounting cup, an actuator slidable through a sidewall of the hollow housing for applying a lateral force to the stem of the tilt valve to open the tilt valve and allow the pressurized gas in the container to flow through the stem into the hollow housing, a cap, and means for forming an airtight seal between the cap and the depending skirt of the hollow housing, whereby the pressurized gas discharged through the tilt valve into the hollow chamber is mixed with ambient air inducted through the at least one inlet in the hollow chamber when a user inhales through the mouthpiece.