This invention describes the internal motor system designed to automatically tighten or loosen shoelaces. It uses a small motor connected to a gearbox, which then drives a special screw-like mechanism called a worm drive. This worm drive turns a gear that winds or unwinds the shoelace spool, allowing the shoe to adjust its fit. The claims specifically detail how the worm drive slides along a shaft to control its rotation.
Why it matters: Since 2017, advancements in compact, high-torque micro-motors and precision 3D printing have made it easier and more cost-effective to prototype and manufacture the custom gear components and integrated housing needed for such a compact drive mechanism in footwear.
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