Patent ID: 6331744
Filing Date: 2001-12-18
Classification: A47J,A61F,A61N,H01F,H01M,H02K,H05B,Y02B,Y02E

Abstract:
A contactless electrical energy transfer apparatus comprising:(a) a portable device including:(i) a receiver coil; and(ii) a housing in which the receiver coil is disposed; and(b) a flux generator including:(i) a housing adapted to be positioned proximate to the housing for the receiver coil;(ii) a magnetic field generator disposed within the housing for the flux generator and comprising at least one permanent magnet and a flux shunt, said at least one permanent magnet being fixed relative to the receiver coil; and(iii) a prime mover that is drivingly coupled to said flux shunt, said flux shunt being thereby caused by the prime mover to intermittently pass adjacent to pole faces of said at least one permanent magnet so as to provide a magnetic flux shunt path between the pole faces, thereby varying a magnetic field coupled with the core of the receiver coil to induce an electrical current to flow in the receiver coil.