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Title: Vertical axis windmill

A vertical axis windmill is described which involves a rotatable central vertical shaft having horizontal arms pivotally supporting three sails that are free to function in the wind like the main sail on a sail boat, and means for disabling the sails to allow the windmill to be stopped in a blowing wind.
Authors:
Publication Date:
OSTI Identifier:
5777576
Report Number(s):
US 4197055
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 28 Nov 1977
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; VERTICAL AXIS TURBINES; DESIGN; ENERGY CONVERSION; SAILS; CONVERSION; MACHINERY; TURBINES; TURBOMACHINERY; WIND TURBINES 170602* -- Wind Energy Engineering-- Turbine Design & Operation