Patent ID: 8258646

Claim:
Tower for a wind turbine ( 1 ) which tower ( 6 ) supports a nacelle ( 3 ) with bearings in which a horizontal rotation axis with turbine blades ( 2 ) can rotate, the tower comprises a steel wall ( 24 ) of circular section, a drive ( 28 ; 29 ) for rotating the nacelle around a vertical axis of the circular section and at the bottom of the tower foundation means ( 7 , 11 ) for supporting the tower in upright position characterized in that the foundation means comprises a bearing ( 10 ) on a base ( 11 ) which bearing supports the tower ( 6 ) and a support ring ( 4 ) positioned by three or more legs ( 5 ) above the base for keeping the tower in upright position wherein in the support ring rollers or wheels ( 12 ) press against the steel wall ( 24 ) of the circular section.