L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Taema

Nicolas Bloch

Stephane Ruton

Michel Jounenc

Yvon Guyomard

A sealed receptacle (1) contains the additive in liquid phase. A dip tube (3) permits sending the additive to a heating enclosure (5) in which the liquid vaporizes before being sent to a collector-mixer (11) through a constriction (10). The flow rate of additive is controlled by the pressure prevailing above the liquid in the receptacle (1) thanks to a control valve (20) connected by a pressure regulator (25) to a computer (26). This latter receives predetermined values of concentration of the mixture through an input (27). It is preferably connected to a detector (28) of the temperature of the enclosure and/or to an analyzer (30) of the composition of the mixture. Used particularly in anesthesia apparatus.

Process and device for the preparation of a gaseous mixture comprised by

A subassembly constituted by a body and a cover (2), defines internally gas conduit portions (I.sub.i) delimited by partitions of the body coacting with sealing strips (12) in grooves (11) of the cover (2) and formed and mounted in these grooves by injection molding. The sealing strips (12) are recessed within the grooves (11) and coact with the ends of the partitions of the body extending partially into the grooves (11). For use particularly in anesthetic apparatus.

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Paris, France

Nicolas Bloch