Aquantis, Inc.

Barnhart Crane and Rigging Co.

Ole Kils

Peter Stricker

Henry Swales

James George Purnell Dehlsen

Neil Smith

Tyler Mayer

Josh Kissinger

A marine current turbine rotor comprises a hub and fixed and two or more pitchable blade sections configured to reduce bending moment loads on the pitch bearings and enable the use of non-standard, low-cost structural materials for the hub, blades, and pitch shaft. A submersible pitch drive mechanism or linkage in the hub rotates the pitch shaft to cause the pitchable blade section to move to a specified pitch position. The hub cavity is configured to be 'wet' without the expense and maintenance requirement of seals to prevent water intrusion, utilizing water-lubricated pitch bearings.

Fixed and pitching blades, spar shaft, bearings and materials for marine current turbine

The present invention relates to a wind turbine enabling a cost effective and easy attachment/replacement of rotor blades and to a method of attaching a rotor blade to a hub of a wind turbine. The wind turbine in accordance with the invention comprises a tower resting on a base, at least one rotor blade having a blade connector portion, a nacelle housing a shaft to which a hub is attached, the nacelle being mounted atop the tower. Said hub of the wind turbine comprises a plurality of hub connection flanges, each hub connection flange being adapted to be detachably connected to a blade connector portion of a rotor blade.

Wind turbine blade lowering apparatus

Growing community of inventors

Santa Barbara, CA, United States of America

Ole Kils