A SOLE FOR A FOOTWEAR

摘要

A sole for a footwear including a body having a length, a body portion of the body that is capable of expansion and contraction, and a drive generator provided in the body for generating drive to drive a device in the body. The drive generator has an elongate drive member arranged to slide relative to the body portion in a direction along the length of the body upon expansion and contraction of the body portion for driving the device as the sole bends and unbends during use.