Patent ID: 7986076
Filing Date: 2011-07-26
Classification: H01L,H02N

Abstract:
1. An energy harvesting device comprising: a base; a low frequency element movably attached to said base, said low frequency element having three-dimensional vibrational movement; a first piezoelectric element attached to said base, said first piezoelectric element spaced apart from said low frequency element with vacant space therebetween; said base, low frequency element and first piezoelectric element generally defining a first plane; a second piezoelectric element attached to said base, said second piezoelectric element generally defining a second plane that is generally parallel to and spaced apart from said first plane; wherein said low frequency element impacts said first piezoelectric element or said second piezoelectric element when said low frequency element vibrates; impact of said piezoelectric element by said low frequency element elastically deforms said piezoelectric element; and said piezoelectric element generates a voltage differential in response to elastically deforming.