The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2005
Filed:
Dec. 18, 2002
Naoki Ishizaki, Tochigi-Prefecture, JP;
Naoki Ishizaki, Tochigi-Prefecture, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
An aerogenerator is provided wherein a fluid-driven transmission and a gear-driven transmission are arranged between a propeller and a generator. The fluid-driven transmission has a variable hydraulic pump and a variable hydraulic motor. The fluid-driven transmission varies a change gear ratio by varying the displacements of the pump and motor. The gear-driven transmission varies a speed increasing ratio between a rotating speed of the propeller and a rotating speed of the generator in synchronization with the gear change ratio of the fluid-driven transmission. A wind velocity of the propeller is detected by an anemometer. And the rotation speed of the propeller is controlled.