Devices with internal flexibility sipes, including siped chambers for footwear

This invention describes a shoe sole designed for improved comfort and stability. It features an outer sole containing a special device with an outer chamber that has a specific concave curve on its top surface. Inside this device are internal slits or sipes that touch each other when the sole is not under pressure, helping to absorb shock and provide support. The claims specifically focus on this unique internal structure for footwear and orthotics.

Why it matters: Additive manufacturing and advanced material science have made creating complex internal geometries and flexible structures more feasible and cost-effective since 2007. This allows for precise fabrication of the described sipes and chambers.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: ModerateCustom molding, complex internal geometries

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