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US 6,554,250 B2Granted
Flap valve device and regulation assembly
AssigneeMark IV Systemes Moteurs (Societe Anonyme)
InventorsAnthony Alves, Richard Komurian
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AssigneeMark IV Systemes Moteurs (Societe Anonyme)
InventorsAnthony Alves, Richard Komurian
Estimating the term…
The present invention relates to a flap valve device and a regulation assembly comprising such devices. A pivoting flap valve device has a flap body substantially in the form of a disc mounted on a support and control axle, for the regulation of the circulation of a fluid, particularly a liquid, between an upstream conduit portion and a downstream conduit portion. The flap body (2) is mounted centered on the axle (3), in that the two conduit portions (4 and 5) are axially offset relative to each other and in that the internal surfaces (7, 7′) of the opposed offsets resulting from the axial offset or non-alignment of the portions (4 and 5) constitute bearing surfaces (7, 7′) for two complementary seat portions (6, 6′) for the flap body (2), located on opposite sides of the axle (3) carrying the flap body (2).
A pivoting flap valve device comprising an upstream conduit portion, a downstream conduit portion, a disc-shaped flap body for regulating circulation of a fluid between said upstream conduit portion and said downstream conduit portion, said disc-shaped flap body being mounted centered on a control and support axle, said upstream and downstream conduit portions having respective offset axes so as to form two seat portions for said flap body, said seat portions being located on opposite sides of said axle and being symmetrical relative to said axle, said seat portions having a shape of at least a portion of a crescent when seen in respective axial directions, said upstream conduit portion and said downstream conduit portion being connected by an intermediate passage portion having an axial length, said seat portions being inclined relative to said axes of said upstream conduit portion and downstream conduit portion and forming at least respective portions of an internal surface of said passage portion, said flap body having beveled edges with opposed slopes on opposite sides of said control and support axle, said beveled edges being adapted to come into shape-mating sealing contact with said seat portions.
Dependencies are inferred from the claim text.