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Reinforcement for a boot, in particular a sports boot, more specifically a cross-country ski boot, and a boot having such a reinforcement
Reinforcement for a boot, in particular a sports boot, more specifically a cross-country ski boot, and a boot having such a reinforcement
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机译:用于靴子,特别是运动靴,更具体地说是越野滑雪靴的加强件以及具有这种加强件的靴子
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摘要
A reinforcement for a boot, in particular a sports boot, more particularly a cross-country ski boot. The boot reinforcement makes it possible to improve the torsional stiffness, efficiency, durability, lightness, cost, foot protection, and industrial workability. To achieve this goal, the boot reinforcement according to the invention includes a front zone A from the front end up to the beginning of the plantar arch, a median zone B corresponding to the plantar arch, a rear zone C. The reinforcement includes, at least in the zones B and C, at least one “sandwich” structure constituted by at least one core inserted between at least two layers, and, in the zone A, it is flexible in a substantially longitudinal direction and torsionally stiff. The layers of the sandwich structure are made of composite, carbon fibers/polymeric resin, whereas the core of this sandwich structure is made of synthetic foam, wood or honeycomb. Each zone A, B, C has a longitudinal flexural strength RfA, RfB, RfC, such that RfARfB≦RfC. The invention also relates to a sports boot including such a reinforcement.
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