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:
Apr. 06, 2021
Filed:
Feb. 22, 2018
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Energy Systems & Solutions Corporation, Kawasaki, JP;
Junji Mori, Tokyo, JP;
Masahiko Nakazono, Kanagawa, JP;
Ryoji Hakataya, Kanagawa, JP;
Kouya Inada, Kanagawa, JP;
Kenichi Imamura, Tokyo, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Tokyo, JP;
Abstract
A movable-blade operation system for a hydraulic machine according to an embodiment includes an oil hydraulic cylinder installed within a rotational shaft, a bidirectional pump, a pump drive motor, a control unit, and an oil head installed in the hydraulic machine. The bidirectional pump selectively feeds pressurized hydraulic oil to one of a first cylinder chamber and a second cylinder chamber. The oil head couples the rotational shaft rotatably, and the hydraulic oil fed from the bidirectional pump to the first cylinder chamber and the second cylinder chamber flows through the oil head. The bidirectional pump, the pump drive motor, and the control unit are installed outside the hydraulic machine.