Footwear and other articles formed by jet extrusion processes

This invention describes a method for creating footwear or shoe components by spraying a liquid material onto a 3D mold. The liquid hardens into extremely fine fibers, forming a fabric-like layer. The claims specifically detail how this process can be used to form sections of a shoe's upper and sole, potentially integrating other structural elements.

Why it matters: Since 2015, significant advancements in precision additive manufacturing and robotic control systems have made complex, multi-material deposition more feasible. This could simplify the precise application of fiber-forming materials onto 3D molds for footwear components, which was a significant challenge at the time of filing.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedJet extrusion apparatus, fiber-forming materials, precision robotics

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