Patent ID: 7503325

Claim:
A gas separator, comprising: a housing, having an inner surface, a first orifice in pneumatic communication with a rebreathing device, and a second orifice in pneumatic communication with a supply of fresh gas; a movable divider in the housing, the movable divider having a first side, a second side and an edge between the first and second sides, the edge being positioned proximate to the inner surface of the housing to limit, but not prevent, the movement of gas from one of the sides to the other side; a guide in the housing, the guide being associated with the movable divider so as to allow the edge to move toward the first orifice during inhalation and toward the second orifice during exhalation, and being associated with the movable divider so as to keep the edge proximate to, and substantially the same distance from, the inner surface of the housing during movement of the edge; and a stationary divider extending from the inner surface and located between the first orifice and the second orifice.