Patent ID: 6525996
Filing Date: 2003-02-25
Classification: G04C,H01L,H02J,H02M

Abstract:
A power feeding apparatus for converting electrical energy into mechanical energy in the form of vibrations that are adapted to be input to a power receiving apparatus, the power feeding apparatus comprising:an electrical power supply; a drive circuit, in electrical communication with the electrical power supply, that outputs a drive signal; a vibration exciter including an excitation surface in which vibrations are induced, a contact surface that is in communication with the excitation surface and that is adapted to mechanically contact and transmit at least some of the induced vibrations to the power receiving apparatus to thereby transfer mechanical energy to the power receiving apparatus, and an actuator in electrode-less contact with the excitation surface, wherein the actuator receives the drive signal and induces the vibrations in the excitation surface in response to the drive signal.