07633177 is referenced by 19 patents and cites 88 patents.

A fluid flow energy capture device for power generation has a rotor with a substantially vertical axis and a plurality of vanes. A mount for the rotor allows the rotor to rotate in response to fluid flow such as wind contacting the plurality of vanes, and the mount puts the rotor in rotationally driving communication with a generator. The rotor has an open center which allows fluid communication from spaces between the vanes to above the rotor. A plurality of guide surfaces define channels that bias fluid flow to be tangential to the rotor.

Title
Reduced friction wind turbine apparatus and method
Application Number
11/747531
Publication Number
7633177 (B2)
Application Date
May 11, 2007
Publication Date
December 15, 2009
Inventor
Michael D Platt
Yates City
IL, US
Agent
Husch Blackwell Sanders
Robert C Haldiman
Assignee
Natural Forces
IL, US
IPC
F03D 3/04
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