Water current generator

Details Water current generator Water current generator

2007-04-03

2007-04-03

Schuberg, Darren (Department: 2834)

Prime-mover dynamo plants

Fluid-current motors

C290S042000, C290S043000, C290S044000, C290S053000, C290S055000, C416S086000

Reexamination Certificate

active

11172924

ABSTRACT:
The underwater electrical generator includes a stator core and counter-rotating turbine blades with permanent magnets in the hubs and windings in the core housing. When tethered by the nose of the housing, the water current rotates the turbine blades generating electrical current which is supplied for commercial use via the tether to a land-based utility. Ballast tanks are provided to maintain the generator at a predetermined depth. Small stator windings and permanent magnets are provided in the rotating hubs and core housing respectively to charge batteries in the hubs for altering the pitch of the blades such that the blades can be feathered for maintenance outages.

REFERENCES:
patent: 3209156 (1965-09-01), Struble, Jr.
patent: 4102291 (1978-07-01), Sebald
patent: 4151424 (1979-04-01), Bailey
patent: 4204943 (1980-05-01), Metrailer et al.
patent: 5592816 (1997-01-01), Williams
patent: 6648589 (2003-11-01), Williams
patent: RE38336 (2003-12-01), Williams
patent: 6729840 (2004-05-01), Williams
patent: 6756695 (2004-06-01), Hibbs et al.
patent: 6806586 (2004-10-01), Wobben

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