Global Patent Index - EP 1605138 A3

EP 1605138 A3 2007-10-03 - Cooled rotor blade with leading edge impingement cooling

Title (en)

Cooled rotor blade with leading edge impingement cooling

Title (de)

Gekühlte Rotorschaufel mit Prallkühlung im Bereich der Eintrittskante

Title (fr)

Aube de rotor refroidie ayant un refroidissement par impact au niveau du bord d'attaque

Publication

EP 1605138 A3 (EN)

Application

EP 05253261 A

Priority

US 85507604 A

Abstract (en)

[origin: EP1605138A2] A rotor blade (14) is provided having a hollow airfoil (22) and a root (20). The hollow airfoil (22) has a cavity defined by a suction side wall (38), a pressure side wall (36), a leading edge (32), a trailing edge (34), a base (28), and a tip (30). An internal passage configuration (40) is disposed within the cavity. The configuration includes a first radial passage (48), a second radial passage (50), and a rib (53) disposed between and separating the first radial passage (48) and second radial passage (50). A plurality of crossover apertures (52) are disposed within the rib (53). A portion of the plurality of crossover apertures (52) are oblong having a length (70) extending through the rib (53), and a height (74) and a width (72). The height (74) of each oblong aperture (52) is greater than the width (72). In some embodiments, the oblong crossover apertures (52) are aligned heightwise along the rib (53). The root (20) includes a conduit (42) that is operable to permit airflow through the root (20) and into the first radial passage (48).

IPC 8 full level (invention and additional information)

F01D 5/18 (2006.01); B63H 1/14 (2006.01); F02C 7/18 (2006.01)

CPC (invention and additional information)

F01D 5/187 (2013.01); F05D 2260/201 (2013.01); F05D 2260/202 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR LV MK YU

EPO simple patent family

EP 1605138 A2 20051214; EP 1605138 A3 20071003; EP 1605138 B1 20100630; DE 602005022018 D1 20100812; JP 2005337257 A 20051208; US 2005265840 A1 20051201

INPADOC legal status


2017-07-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20170420

- Year of fee payment: 13

2017-07-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20170426

- Year of fee payment: 13

2017-07-24 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: UNITED TECHNOLOGIES CORP. (N.D.GES.D. STAATES , US

- Free text: FORMER OWNER: UNITED TECHNOLOGIES CORP., HARTFORD, CONN., US

- Document: DE 602005022018

2017-07-24 [REG DE R082] CHANGE OF REPRESENTATIVE

- Document: DE 602005022018

- Representative's name: SCHMITT-NILSON SCHRAUD WAIBEL WOHLFROM PATENTA, DE

2017-07-12 [REG DE R082] CHANGE OF REPRESENTATIVE

- Document: DE 602005022018

- Representative's name: SCHMITT-NILSON SCHRAUD WAIBEL WOHLFROM PATENTA, DE

2011-07-21 [REG DE R097] NO OPPOSITION FILED AGAINST GRANTED PATENT, OR EPO OPPOSITION PROCEEDINGS CONCLUDED WITHOUT DECISION

- Document: DE 602005022018

- Effective date: 20110330

2011-06-08 [26N] NO OPPOSITION FILED

- Effective date: 20110331

2010-08-12 [REF] CORRESPONDS TO:

- Document: DE 602005022018 P 20100812

2010-06-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE GB

2010-06-30 [REG GB FG4D] EUROPEAN PATENT GRANTED

2008-06-11 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): DE GB

2008-03-26 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20080222

2008-02-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20080111

2007-10-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

2007-10-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL BA HR LV MK YU

2005-12-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

2005-12-14 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL BA HR LV MK YU