Windmill apparatus
A windmill apparatus is described comprising: a frame body structure adapted to be positioned on a flat top surface of a construction such as a building; a main shaft vertically fixed in a middle position of the frame body structure; a first main-shaft sleeve rotatably coupled with a lower portion of the main shaft for being driven to rotate around the main shaft; a belt pulley fixedly connected at a lower end of the first main-shaft sleeve for providing a driving force along with the first main-shaft sleeve; a rotating means having a revolving arrangement vertically disposed therein rotatably installed around the first main-shaft sleeve within a lower open portion of the frame body structure for being driven to rotate by wind along with the first main-shaft sleeve; a second main-shaft sleeve with a first gear fixed at a lower end thereof movably connected at an upper portion of the main shaft for providing gear transmission therefrom; a direction control means installed within an upper closed portion of the frame body structure and rotatably connected to the rotating means through the second main-shaft sleeve for automatically adjusting the revolving arrangement according to wind direction; and a wind direction indicating means horizontally disposed on top of the frame body structure and rotatably connected to the direction control means so as to relay wind direction change whereby, wind force can be effectively utilized with a simplified structure.
- Assignee:
- Muh-Juh Chen, Tainan
- Patent Number(s):
- US 4707617
- OSTI ID:
- 5858428
- Resource Relation:
- Patent File Date: Filed date 23 Dec 1986
- Country of Publication:
- United States
- Language:
- English
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