Patent ID: 6727600
Filing Date: 2004-04-27
Classification: F03B,F05B,H02K,Y02E

Abstract:
An underwater generator comprising:a stator with an external stator face surface, said surface oriented perpendicular to its central axis line, said stator containing an electromagnetic coils means sealingly imbedded therein and positioned against said external face surface, said electromagnetic coils means adapted to generate electricity when said external stator face surface is in a vicinity of passing alternating magnetic poles, said stator further including an axis aligned with said central axis line; a rotor, including a spring-loaded shaft capable of turning about and axially moving along said axis, said shaft containing an opening in fluid communication with the water flow, a rotary vane system radially extending from said shaft for causing a rotation of said rotor when in a water current, a system of alternating permanent magnets sealingly imbedded in said rotor to form an internal rotor face surface, said surface oriented perpendicular to said central axis line and in a close proximity to said external stator face surface to form an axial gap therebetween, said rotor further incorporating a series of radial channels to fluidly connect said shaft opening to said axial gap; and an auxiliary pumping means connected to said channel system to provide a predetermined amount of flow into said axial gap.