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:
Oct. 20, 2009
Filed:
Jul. 22, 2005
Takanori Ishii, Hitachi, JP;
Ryuichiro Iwano, Hitachi, JP;
Akira Manabe, Niihari-gun, JP;
Yasuhiro Inoue, Niihari-gun, JP;
Takanori Ishii, Hitachi, JP;
Ryuichiro Iwano, Hitachi, JP;
Akira Manabe, Niihari-gun, JP;
Yasuhiro Inoue, Niihari-gun, JP;
Hitachi Plant Technologies, Ltd., Tokyo, JP;
Abstract
The guide vanes comprise two kinds of guide vanes which are alternately placed in the circumferential direction of a shroud. One kind of the guide vanes have a longer length than the other kind of the guide vanes, in the region which is close to the surface of the hub, but have substantially the same length as the other kind of the guide vanes, in the region which is close to the shroud. The leading edges of the second kind of guide vane are located further downstream in the pump axial direction than the leading edges of the first kind of guide vanes.