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:
Feb. 04, 1986
Filed:
Mar. 28, 1984
Applicant:
Inventor:
Kentaro Ichikawa, Chigasaki, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
415-1 ; 415 14 ; 415 26 ; 415500 ;
Abstract
A method and apparatus for controlling a multistage hydraulic machine in which respective pressure stages are connected in series through runners and return passages and the highest and lowest pressure stages are provided with movable guide vanes, are organized such that the guide vanes of either one of the two pressure stages are controlled in accordance with the load of the hydraulic machine, while the guide vanes of the other one of the two pressure stages are controlled in accordance with a relation defined by the load of the lowest pressure stage and the load of the hydraulic machine.