IP Library Granted Patent US 7,489,046
Granted Patent B2
US 7,489,046 · App. 11/422,966 · Granted Feb 10, 2009

Water turbine system and method of operation

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Quick Facts
Patent No.
US 7,489,046
App. No.
11/422,966
Granted
Feb 10, 2009
Kind
B2
Abstract

A system for providing electrical power from a current turbine is provided. The system includes a floatation device and a mooring. A water turbine structure is provided having an upper and lower portion wherein the lower portion includes a water fillable chamber. A plurality of cables are used to couple the system where a first cable couples the water turbine to the mooring and a second cable couples the floatation device to the first cable. The system is arranged to allow the turbine structure to be deployed and retrieved for service, repair, maintenance and redeployment.

Claims (13)

1. A flowing water turbine system comprising:

a submerged mooring;

a buoy coupled to said mooring, said buoy having a controller;

a flowing water turbine coupled to said mooring, said water turbine having:

a first body portion having a first and second end and an electrical generator mounted between said first and second end;

a second body portion mounted to said first body portion between said electrical generator and said second end;

a third body portion mounted to said first body portion adjacent said second body portion; and,

at least one water fillable tank in each of said first, second and third body portions; and,

a turbine controller mounted in said water turbine and operably coupled to said buoy controller and each of said water fillable tanks.

2. The flowing water turbine system of claim 1 wherein said buoy controller includes a user activation device and a means for transmitting a signal to said turbine controller.

3. The flowing water turbine system of claim 2 wherein said turbine controller includes means for selectively filling and ejecting water each of said water fillable tanks.

4. The flowing water turbine system of claim 3 further comprising a plurality of pumps, each of said plurality of pumps being associated with a water fillable tank and arranged to fill and eject water from said water fillable tanks in response to a signal from said turbine controller.

5. The flowing water turbine system of claim 2 wherein said user input device is selected from the group consisting of an electronic data card, voice activation means, manually-operable selection and control means, radiated wavelength and electronic or electrical transfer.

Assignments (6)
SECURITY INTEREST Recorded Sep 17, 2018
From: NORTHERN POWER SYSTEMS, INC.
To: COMERICA BANK
Reel/Frame 046888/0822 →
AFFIDAVIT OF RELEASE OF SECURITY INTERESTS Recorded Nov 23, 2011
From: MARK, ELLIOT J.
To: NORTHERN POWER SYSTEMS, INC.
Reel/Frame 027280/0699 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2008
From: NORTHERN POWER SYSTEMS, INC.
To: CB WIND ACQUISITION CORP.
Reel/Frame 021824/0753 →
CHANGE OF NAME Recorded Nov 14, 2008
From: CB WIND ACQUISITION CORP.
To: NORTHERN POWER SYSTEMS, INC.
Reel/Frame 021838/0255 →
SECURITY AGREEMENT Recorded Jun 8, 2007
From: NORTHERN POWER SYSTEMS, INC.
To: PERSEUS PARTNERS VII, L.P.
Reel/Frame 019399/0410 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 8, 2006
From: C, D P.
To: NORTHERN POWER SYSTEMS, INC.
Reel/Frame 017747/0587 →