Patent ID: 9121394
Filing Date: 2015-09-01
Classification: F03G,H02K,H02N

Abstract:
1. An energy harvester for convening vibrational motion of a vibrating equipment into electrical energy, comprising: a pendulum pivotably attached to said vibrating equipment; a motion limiter arranged to limit a pivoting: motion of said pendulum, said motion limiter including a first bar element spaced from a first side of the pendulum and a second bar element spaced from a second side of the pendulum; a first spring element having a first end attached to the pendulum and a second end positioned in contact with the first bar element to restrict the pivoting movement of the pendulum during the pivoting movement of the pendulum and to cause the pendulum to rebound from the first bar element; a second spring element having a first end attached to the pendulum and a second end positioned in contact with the second bar element to restrict the pivoting movement of the pendulum during the pivoting movement of the pendulum and to cause the pendulum to rebound from the second bar element; and a generator connected to said pendulum and arranged to convert said pivoting motion into electrical energy, said vibrational motion having an operating frequency, and said pendulum having a natural frequency different from said operating frequency.