Patent attributes
A footwear apparatus has a bottom portion on which a foot of a user is positioned. The bottom portion has a heel portion and a toe portion. Further, the footwear apparatus has a rear portion operably attached to the heel portion. Additionally, the footwear apparatus has a force-to-energy conversion device that is operably attached to the heel portion in proximity to the rear portion. The force-to-energy conversion device receives one or more external forces from an environment external to the shoe. Further, the force-to-energy conversion device converts the one or more external forces to electrical energy. Moreover, the footwear apparatus has a removable power supply assembly that is operably connected to the rear portion. The removable power supply assembly has a power supply that stores the electrical energy.
