Patent ID: 7948153

Claim:
A piezoelectric energy harvester comprising: a frame; a plurality of interdigitated tapered cantilevered beams, the frame and the plurality of interdigitated tapered cantilevered beams exist within a continuous piezoelectric transducer sheet, each beam of the plurality having a fixed end connected to the frame and a moveable end, each beam further comprising: a supporting layer; at least one piezoelectric layer affixed to at least one surface of the supporting layer; and at least a first and a second sense mass, the at least first and second sense masses connected to the moveable ends of at least a first set and a second set of beams respectively of the plurality, wherein the at least first and second sets of beams are operationally configured for motion independent of each other; and means for electrically contacting the at least one piezoelectric layer of each beam of the plurality.