Importance

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Abstract

A portable, self-contained rotary generator able to fast-charge electronic devices via a universal serial bus (USB) interface. Human muscle energy, gravitational energy, or a combination of both can be delivered to the generator by a crank whereby input motion is rotary or a wheel whereby input motion is linear. Input motion and its associated energy are modified by a gear ratio connected to a generator which produces electrical power. Power electronics convert the electrical power and deliver it to a connected electric device in accordance with USB fast-charging standards such as USB Power Delivery (USB-PD) or Qualcomm Quick Charge (QC). A removable means of securing the generator to solid objects alleviates the need for two-handed operation, enables embodiments harnessing gravitational energy, and increases the potential power output of all embodiments of the generator.

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First Claim