Rotary kinetic fluid motors or pumps – Including shaft transmission train – brake – clutch – or... – Brake or clutch
Reexamination Certificate
2011-02-22
2011-02-22
Nguyen, Ninh H (Department: 3745)
Rotary kinetic fluid motors or pumps
Including shaft transmission train, brake, clutch, or...
Brake or clutch
Reexamination Certificate
active
07891941
ABSTRACT:
A wind turbine comprising an electrical generator that includes a rotor assembly. A wind rotor that includes a wind rotor hub is directly coupled to the rotor assembly via a simplified connection. The wind rotor and generator rotor assembly are rotatably mounted on a central spindle via a bearing assembly. The wind rotor hub includes an opening having a diameter larger than the outside diameter of the central spindle adjacent the bearing assembly so as to allow access to the bearing assembly from a cavity inside the wind rotor hub. The spindle is attached to a turret supported by a tower. Each of the spindle, turret and tower has an interior cavity that permits personnel to traverse therethrough to the cavity of the wind rotor hub. The wind turbine further includes a frictional braking system for slowing, stopping or keeping stopped the rotation of the wind rotor and rotor assembly.
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Bevington Christopher M.
Bywaters Garrett L.
Coleman Clint C.
Costin Daniel P.
Danforth William L.
Downs Rachlin & Martin PLLC
Nguyen Ninh H
Northern Power Systems Inc.
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