F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/57
F16K 15/14 (2006.01) A61M 16/00 (2006.01)
Patent
CA 1210304
ABSTRACT OF THE DISCLOSURE A valve system is provided for venting an anesthesia apparatus in a room space, such as an operating theatre, to the atmosphere outside the room, so as to prevent unwanted build-up of escaping anesthesia gas in the room, together with a venting valve for that purpose. The venting valve has two inlets, each with a respective one-way valve, and a single outlet meeting at an interior junction. Pipe means connect the anesthesia apparatus to one inlet, and the one-way valves ensure that gas flows only to the atmosphere. Other pipe means connect the room interior to the other inlet and again the one-way valves ensure only flow of gas from the room interior to the atmosphere. Further pipe means connect the outlet to the exterior atmosphere. Preferably the one-way valves are flexible diaphragm valves that are moved by gas movement and pressure into and out of engagement with rigid diaphragm supports to respectively close and open the valve.
433091
Coll Michael A.
Hirons & Rogers
LandOfFree
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