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This invention describes a flexible, self-supporting silicone membrane designed to be worn on the foot for comfort and support, particularly with high heels. It works by having varying thicknesses, with thicker areas under key pressure points like the big toe, forefoot, and heel, and a curved shape that cups the foot. The claims specify it's made of silicone with a durometer between 3 and 10 Shore A, and detail specific thickness variations.
Why it matters: Since 2015, advancements in additive manufacturing for elastomers have made it significantly easier and more cost-effective to prototype and produce complex silicone structures with varying thicknesses and durometers, which was a manufacturing challenge for this design.
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