Patent ID: 8987973
Filing Date: 2015-03-24
Classification: H02N

Abstract:
1. An energy harvester comprising: a base; one or more first resilient means mounted on the base; a hollow chamber having a mounting point pivotally attached to the first resilient means in static equilibrium in such a way that center of mass of the hollow chamber is aligned with the first resilient means at vertical axis; a hollow member enclosed within the hollow chamber being attached to one or more second resilient means extending from the mounting point in static equilibrium that center of mass of the hollow member is aligned with the second resilient means at the vertical axis; a plurality of piezoelectric material-built cantilevers mounted on the hollow member and spaced apart from one another in a predetermined gap at the vertical plane that the piezoelectric material-built cantilevers are varied in length and/or center of mass; an integrated circuit connected to at least one of the hollow chamber, the hollow member, and the plurality of piezoelectric material-built cantilevers, and at least one of a primary storage and a device, wherein the integrated circuit directs harvested energy from at least one of the hollow chamber, the hollow member, and the plurality of piezoelectric material-built cantilevers to at least one of the primary storage and the device; and wherein the energy is harvested through vibration of the plurality of piezoelectric material-built cantilevers, reciprocation of the hollow chamber and the hollow member upon application of a force.