Patent ID: 7847421

Claim:
A multi-stage system for generating electrical power from motion, comprising: a primary stage comprising a resonating electrical generator to convert motion to electrical energy, the generator comprising: a coil; a first biasing element tuned to resonate at a first frequency; and a first magnet generating a magnetic field, the first magnet coupled to the first biasing element and disposed in proximity to the coil such that the coil is located within the magnetic field, wherein the first biasing element enables a resonant oscillation of the first magnet relative to the coil to generate an electric current in the coil; and a supplementary stage coupled to the primary stage, the supplementary stage comprising a kinetic energy conversion system to convert motion to stored potential energy, the kinetic energy conversion system comprising: a second biasing element to store potential energy by being forced from a resting position to a tension position, wherein the second biasing element is tuned to resonate at a second frequency that is lower than the first frequency, and wherein the supplementary stage periodically releases the stored potential energy to generate a resonant oscillation at the first frequency to drive the primary stage, and wherein the first magnet of the resonating electrical generator is diametrically poled and the first biasing element of the resonating electrical generator comprises a torsion shaft with a fixed end, and the resonating electrical generator further comprises a core coupled to and supporting the coil, and wherein the first magnet is coupled to the torsion shaft and configured to rotate as the torsion shaft twists in response to motion.