Patent ID: 6401714
Filing Date: 2002-06-11
Classification: A62B

Abstract:
Apparatus adapted to be positioned fluidly intermediate of a source of breathable air and a breathing regulator for delivering air to a user, comprising:a regulator chamber adapted for fluid communication with both the source and the breathing regulator; a first movable member bounding the regulator chamber, wherein the first movable member moves responsive to a regulator pressure in the regulator chamber; a metering member operatively connected to the first movable member, wherein the metering member is operative to control air flow from the source into the regulator chamber responsive to movement of the first movable member; a second chamber; a second movable member bounding the second chamber and movable responsive to a second pressure therein; a connecting device operatively connecting the second movable member to the first movable member; and a valve mechanism in operative connection with the second chamber, wherein the valve mechanism is adapted for operative connection with the source, wherein the valve mechanism is operative to vary the second pressure responsive to a source pressure of the source, wherein the second pressure is varied to move the second movable member responsive to a reduction in the source pressure and such movement of the second movable member is operative to increase the regulator pressure.