A - Human Necessities – 43 – B
Patent
A - Human Necessities
43
B
A43B 7/06 (2006.01) A43B 7/08 (2006.01)
Patent
CA 2489254
A sole for shoe of elastic material is provided with valves placed at its sides for discharging inner air, each said valve consisting of a through channel (4) formed in the thickness of the sole and not involving the tread of the sole, which channel (4) connects the interior of the shoe to the outside and is closed by a perforated diaphragm or membrane (2) of elastic material provided with a convexity directed to the outside and forming a check valve. Advantageously, said valves are made in one piece of elastic material with the sole during the same moulding step, the membrane being provided with microholes in a later step.
L'invention concerne une semelle de chaussure en matière plastique munie de valves placées latéralement pour évacuer l'air intérieur. Chaque valve comprend un canal débouchant (4) formé dans l'épaisseur de la semelle sans mettre en jeu la lamelle de la semelle. Ce canal relie l'intérieur de la chaussure à l'extérieur et est fermé par un diaphragme ou une membrane perforée (2) en matière plastique qui présente une convexité orientée vers l'extérieur et forme une vanne de non retour. Pour plus d'efficacité, ces vannes forment avec la semelle un seul bloc de matière plastique réalisé pendant la même opération de moulage, la membrane étant dotée de trous minuscules à une étape ultérieure.
Calzaturificio Valleverde S.p.a.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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