Patent ID: 7413404
Filing Date: 2008-08-19
Classification: F03D,F05B,Y02E

Abstract:
1. A sail wing type windmill comprising; an output shaft erected vertically; a foundation with a bearing disposed in a center hole provided in the foundation for supporting the output shaft to rotate therein; an axle body with a bottom end being conjoined to the output shaft, and an external surface being formed of several spigots, and provided with an upper joint flange and a lower joint flange; a rudder assembly turnably conjoined to a top end of the output shaft and including a turn table, and a twin vaned tail wing, wherein the turn table is inserted in the center hole of the axle body, an external surface of the turn table is provided with a snaking recessed lead rail terminated into a lead portion thereof, the twin vaned tail wing is for constantly pointing to a wind direction and turning the turn table with wind force; and a wing blade assembly including: two bracing bars respectively jointed to the upper and the lower joint flanges of the axle body with one ends thereof; an upper sail wing jointed to a rear edge of the upper bracing bar; a lower sail wing jointed to a rear edge of the lower bracing bar; and a plurality of follower units, each including a connecting rod, a fixed guide ring, a follower portion, and a rolling portion, the follower unit being held at an end portion of the bracing bar with the fixed guide ring, and is fixed to the upper and the lower sail wings, wherein the rolling portion is installed at one end of the connecting rod, while the connecting rod passes through the fixed guide ring and the follower portion to be able to rotate in the fixed guide ring and conjoined to the follower portion.