Duckbill valve and inhalation device including such a valve
AssigneeProtecsom
InventorThierry Poree
Life of this patent
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Abstract
The invention relates to a valve (300) comprising a base (301) in the form of a ring defining a central opening (309), as well as an upper surface (302) and a lower surface (303), both of which are planar and converge toward each other from the base (301) in the direction opposite said base, and characterized in that the upper and lower surfaces (302, 303) together form an angle (Ang) of at least 60°, and in that the free edges (304, 305) thereof define a slit (306) which is open when the valve is at rest.
Claims10
A duckbill valve comprising a ring shaped base defining a central opening, an upper surface and a lower surface, both of which are planar and converge toward each other from the base in the direction opposite said base, wherein the upper and lower surfaces together form an angle of at least 60° and wherein free edges thereof define a slit which is open when the valve is at rest.
Dependencies are inferred from the claim text.