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:
Mar. 26, 2013
Filed:
Jun. 16, 2011
Kazuhisa Tsutsumi, Tokyo, JP;
Takuro Kameda, Tokyo, JP;
Taku Ichiryuu, Hyogo, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A power generating apparatus of renewable energy type in which a hydraulic pipe between a hydraulic pump installed inside a nacelle and a hydraulic motor installed near a bottom part of a tower can handle the turning motion of the nacelle. In the power generating apparatus of renewable energy type, a hydraulic pump inside the nacelle and a hydraulic motor near a base end part of a tower are connected by a first double pipe and a second double pipe. The first double pipe is rotatably connected to the second double pipe. The first double pipe includes a first inner pipe and a first outer pipe. The second double pipe includes a second inner pipe and a second outer pipe. The first and second inner pipes communicate with each other to form an inner passage. The first and second outer pipes communicate with each other to form an outer passage.