Patent ID: 8796907

Claim:
An electrical power generator, comprising: a housing; an inertial mass mounted in said housing, said inertial mass being capable of at least limited movement within said housing in response to vibration of said housing; and a transducer mounted within said housing and being coupled to said inertial mass such that said transducer undergoes oscillatory motion in response to the movement of said inertial mass resulting from the vibration, wherein said transducer is an electromagnetic transducer comprising a solenoid coil encircling a magnetic core, said coil being fixed within said housing and said core being suspended within said housing such that said core can be magnetically coupled to said inertial mass for concomitant movement with said inertial mass in response to the vibration, and can be substantially magnetically decoupled from said inertial mass during at least a portion of the movement of said inertial mass wherein said decoupled core undergoes the oscillatory motion relative to said coil to thereby induce current in said coil.