Patent ID: 7679249
Filing Date: 2010-03-16
Classification: H02K,Y02E

Abstract:
1. A contra rotating generator apparatus, comprising: a cylindrical armature supported on an inner shaft, wherein said inner shaft rotates in a first direction; a cylindrical magnetic field rotor supported on an outer shaft, wherein said outer shaft is oriented coaxially to the inner shaft, further wherein the outer shaft contra rotates in a second direction opposite to said first direction; a plurality of cam followers for maintaining a uniform air gap between outer surface of said cylindrical armature and inner surface of said cylindrical magnetic field rotor; wherein said uniform air gap prevents mechanical contact between the cylindrical armature and the cylindrical magnetic field rotor; and a sprag clutch provided on one of the inner shaft and the outer shaft, wherein said sprag clutch prevents unidirectional rotation of the inner shaft and the outer shaft; whereby said contra rotation between the cylindrical armature and the cylindrical magnetic field rotor increases relative magnetic flux speed for generating electrical power at low rotational speeds of operation of a contra rotating generator.