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:
Nov. 12, 2013
Filed:
Apr. 06, 2007
Applicants:
Hidekazu Kodama, Tokyo, JP;
Shinya Goto, Tokyo, JP;
Ikuhisa Mizuta, Tokyo, JP;
Takeshi Murooka, Tokyo, JP;
Inventors:
Hidekazu Kodama, Tokyo, JP;
Shinya Goto, Tokyo, JP;
Ikuhisa Mizuta, Tokyo, JP;
Takeshi Murooka, Tokyo, JP;
Assignee:
IHI Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 5/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hub-side leading edge part of a fan first-stage rotating bladefor taking an air thereinto more extends in a forward direction of an engine than a tip-side leading edge part and a mid-span leading edge part. The hub side of the fan first-stage rotating bladeis integrally connected as one with the tip side and the mid span while having a longer chord length than those of the tip side and the mid span. A radius at a root of the hub-side leading edge part is set in a boss ratio of 0 to 0.4.