Patent ID: 11929692
Assignee: 8POWER LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A vibrational energy harvester comprising:
a frame;
first and second primary flexures,
a mass, the mass being coupled to both the first and second primary flexures;
wherein the first and second primary flexures are configured to flex to allow the mass to move in a first direction, and separated from one another in the first direction;
a plurality of secondary flexures, each of the primary flexures being fixed to a secondary flexure at a position spaced from the mass, and coupling the primary flexure to the frame, wherein each of the secondary flexures is configured to flex to allow the mass to move in a second direction different to the first direction;
wherein the first and second primary flexures each have a length extending in the second direction, a thickness extending in the first direction, and a width extending in a third direction orthogonal to the first direction and to the second direction, wherein the length and the width are greater than the thickness of the first and second primary flexures, and
wherein the secondary flexures each have a length extending in the first direction, a thickness extending in the second direction, and a width extending in the third direction, wherein the length and the width are greater than the thickness of the secondary flexures,
such that none of the flexures in the vibrational energy harvester are configured to flex in the third direction; and
a transduction assembly configured to convert movement of the mass and primary and secondary flexures into electrical energy.