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International application No. Applicant's or agent's file reference
PCT/CN2015/085745 FPME15140036
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
31 July 2015
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing filed or furnished:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.

A rotor blade for a turbine (12) of a gas turbine (10) includes an airfoil (25). The airfoil (25) may have a leading edge (28), a trailing edge (29), an outboard (31), and an inboard end that attaches to a root (21) configured to couple the rotor blade to a rotor disc. The airfoil (25) may have a cooling configuration that includes elongated cooling channels (33) for receiving and directing a coolant through the airfoil (25). The rotor blade may further include: a tip shroud (55) connected to the airfoil (25); outlet ports (37) formed through an outboard face (60) of the tip shroud (55) that fluidly communicate with the cooling channels; and flow directing structure formed on the outboard surface (60) of the tip shroud (55). The flow directing structure may be positioned relative to the outlet ports (37) and configured for directing the flow of coolant discharged from the outlet ports (37). The rotor blade may be useful to reduce local tip shroud temperature as well as improved stage aerodynamic efficiency by reducing the coolant supply needed to maintain the component at desired temperature levels.

6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     11    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     F01D 5/18 (2006.01)i; F01D 5/22 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
     F01D; F04D
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
CNABS; DWPI; CN/EP/WO/USTXT: blade, vane, turbine, airfoil, tip, shroud, coolant, flow, direct, guide


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2009304520 A1 (GEN ELECTRIC) 10 December 2009 (2009-12-10)
description, paragraphs 16 to 26, figures 1 to 5
CN 103133040 A (GEN ELECTRIC) 05 June 2013 (2013-06-05)
description, paragraphs 21 to 34, figures 1 to 6
CN 103119247 A (SIEMENS AG ET AL.) 22 May 2013 (2013-05-22)
description, paragraphs 21 to 35, figures 1 to 3
CN 103422909 A (GEN ELECTRIC) 04 December 2013 (2013-12-04)
description, paragraphs 35 to 61, figures 1 to 15
EP 2851511 A2 (HONEYWELL INT INC) 25 March 2015 (2015-03-25)
the whole document
CN 103061824 A (GEN ELECTRIC) 24 April 2013 (2013-04-24)
the whole document
CN 104685160 A (GEN ELECTRIC) 03 June 2015 (2015-06-03)
the whole document
CN 104791018 A (DOOSAN HEAVY IND & CONSTR CO LTD) 22 July 2015 (2015-07-22)
the whole document
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2009304520 A1
10 December 2009
US 7686581 B2
JP 2007327493 A
KR 101378252 B1
EP 1865149 A2
KR 20070117476 A
JP 5185569 B2
EP 1865149 A3
30 March 2010
20 December 2007
25 March 2014
12 December 2007
12 December 2007
17 April 2013
08 June 2011
CN 103133040 A
05 June 2013
EP 2599958 A3
US 9127560 B2
US 2013142649 A1
JP 2013117227 A
RU 2012151223 A
EP 2599958 A2
16 September 2015
08 September 2015
06 June 2013
13 June 2013
10 June 2014
05 June 2013
CN 103119247 A
22 May 2013
EP 2564029 B1
WO 2011161188 A1
CN 103119247 B
EP 2564029 A1
US 8702391 B2
US 2013209268 A1
01 October 2014
29 December 2011
25 November 2015
06 March 2013
22 April 2014
15 August 2013
CN 103422909 A
04 December 2013
JP 2013245674 A
US 2013315749 A1
RU 2013123452 A
09 December 2013
28 November 2013
27 November 2014
EP 2851511 A2
25 March 2015
US 2015078916 A1
EP 2851511 A3
19 March 2015
06 May 2015
CN 103061824 A
24 April 2013
EP 2578803 A3
EP 2578803 A2
US 8840371 B2
US 2013089434 A1
CN 103061824 B
07 May 2014
10 April 2013
23 September 2014
11 April 2013
24 February 2016
CN 104685160 A
03 June 2015
JP 2015524895 A
WO 2014022618 A1
US 2014037458 A1
US 9273561 B2
EP 2904212 A1
27 August 2015
06 February 2014
06 February 2014
01 March 2016
12 August 2015
CN 104791018 A
22 July 2015
US 2015198049 A1
EP 2899370 A1
KR 101509385 B1
JP 2015135113 A
16 July 2015
29 July 2015
07 April 2015
27 July 2015
Name and mailing address of the ISA/:
6, Xitucheng Rd., Jimen Bridge, Haidian District, Beijing 100088
Facsimile No. (86-10)62019451
Date of the actual completion of the international search:
17 April 2016
Date of mailing of the international search report:
09 May 2016
Authorized officer:
Telephone No. (86-10)62085239
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