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US 6,713,208 B2Granted
Vent valve and a storage cell including it
AssigneeAlcatel
InventorsStéphane Payen, Alain Raymond
Life of this patent
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AssigneeAlcatel
InventorsStéphane Payen, Alain Raymond
Estimating the term…
A vent valve includes a vent cap closed by a cover plate with an orifice through it. The vent cap has a circular section and includes two diametrally opposed vent holes on its circumferential wall. An elastic seal having three vertices arranged in a triangle and connected in pairs by respective circular arcs—and preferably in the shape of a REULEAU triangle—is compressed between the bottom of the vent cap and the cover plate. The seal therefore blocks the orifice. If the fluid pressure at the orifice is sufficiently high, the fluid compresses the seal further and makes a path for itself between the seal and the cover plate and then escapes through the vent holes. The vent valve is suitable for use in a storage cell, in which case the cover plate can be used to close its casing.
A vent valve including an elastic seal compressed by an upper first wall against an orifice in a lower second wall and surrounded by a third wall, which seal has a section, in a plane parallel to said first wall or to said second wall, having three vertices disposed in a triangle formed by three vertical flanks of the seal, said three vertices of said section of said seal being connected in pairs by respective circular arcs, and said three flanks being substantially perpendicular to upper and lower parallel faces of the seal.
Dependencies are inferred from the claim text.