Patent ID: 7603864

Claim:
A blade tip electric machine comprising: a rotary blade arrangement, the rotary blade arrangement being configured with a plurality of blades; a plurality of rotor pole elements, each rotor pole element of the plurality of rotor pole elements being disposed on a distal end of one of the plurality of blades; a plurality of magnetically permeable stator core elements, each stator core element of the plurality of stator core elements having a slot and being circumferentially spaced around at least a portion of a circumferential perimeter of the plurality of blades; at least one coil element disposed within one slot of the plurality of stator core elements; an airgap disposed between the rotor pole elements and the plurality of magnetically permeable stator core elements; and wherein the rotary blade arrangement has a spinning motion and wherein the plurality of rotor elements pass adjacent to the plurality of stator elements thereby causing a change in magnetic flux and generating electric power in the at least one coil element, wherein the magnetic flux generated travels substantially radially across the airgap and substantially axially across the plurality of rotor pole elements or portions of the plurality of magnetically permeable stator core elements.