EP1561902A3
Turbine blade comprising turbulation promotion devices
Abstract
A turbine blade (10) having improved cooling has an airfoil (13) with a root end (16) and a tip end (18) and at least one cooling passageway (14) in the airfoil (13). Each cooling passageway (14) extends from the root end (16) to the tip end (18) and has a circular cross-section. A plurality of turbulation promotion devices (36) are arranged in each cooling passageway (14). Each of the turbulation promotion devices (36) is arcuate in shape and circumscribes an arc less than 180 degrees.
Term
Term ended
Projected expiry passed 8 February 2025, 1.6 years ago.
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2 sheets
Sheet 1 Sheet 2
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP1201343A2 | Cites | European Patent Office (EPO) | XY | Search report | 1,2,4-10,12,13,15 |
| EP1283327A2 | Cites | European Patent Office (EPO) | X | Search report | 1,2,4,5,9,10,12,13,15 |
| GB2159585A | Cites | United Kingdom | A | Search report | 1,2,4-10,12,13,15 |
| US5413463A | Cites | United States of America | DYA | Search report | 3 |
| US5695322A | Cites | United States of America | YA | Search report | 11,14 |
| US6234752B1 | Cites | United States of America | A | Search report | 1-5,8-15 |
8 members in 4 offices; this record represents the family
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 774989 | United States of America | – | |
| 77498904 | United States of America | A |
Members8
| Document | Office | Kind | |
|---|---|---|---|
| EP1561902A2 | European Patent Office (EPO) | A2 | |
| US2005175454A1 | United States of America | A1 | |
| CN1654783A | China | A | |
| US6997675B2 | United States of America | B2 | |
| RU2005103308A | Russian Federation | A | |
| RU2299991C2 | Russian Federation | C2 | |
| EP1561902A3This record | European Patent Office (EPO) | A3 | |
| EP1561902B1 | European Patent Office (EPO) | B1 |
39 legal events, as 3 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119 | R119 | DE | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Change of applicant/patenteeR081 | R081 | DE | |
| Change of representativeR082 | R082 | DE | |
| Change of representativeR082 | R082 | DE | |
| Opposition rejectedOpposition27O | 27O | EP | |
| Opposition rejectedOppositionORIGINAL CODE: 0009273PLBN | PLBN | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: OPPOSITION REJECTEDSTAA | STAA | EP | |
| Party data changed (patent owner data changed or rights of a patent transferred)RAP2 | RAP2 | EP | |
| Communication despatched that opposition was rejectedOppositionORIGINAL CODE: EPIDOSNREJ1PLCK | PLCK | EP | |
| Epo decision maintaining patent unamended now finalR100 | R100 | DE | |
| Opposition filed (corrected)OppositionR26 | R26 | EP | |
| Opposition data, opponent's data or that of the opponent's representative modifiedOppositionORIGINAL CODE: 0009299OPPOPLAB | PLAB | EP | |
| Reply of patent proprietor to notice(s) of opposition receivedOppositionORIGINAL CODE: EPIDOSNOBS3PLBB | PLBB | EP | |
| Information modified related to communication of a notice of opposition and request to file observations + time limitOppositionORIGINAL CODE: EPIDOSCOBS2PLAF | PLAF | EP | |
| Opposition filed against patentOppositionR026 | R026 | DE | |
| Notice of opposition and request to file observation + time limit sentOppositionORIGINAL CODE: EPIDOSNOBS2PLAX | PLAX | EP | |
| Opposition filedOpposition26 | 26 | EP | |
| Opposition filedOppositionORIGINAL CODE: 0009260PLBI | PLBI | EP | |
| Dpma publication of mentioned ep patent grantGrantedR096 | R096 | DE | |
| Change of applicant/patenteeR081 | R081 | DE | |
| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP | GRAP | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Designation fees paidAKX | AKX | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAX | AX | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAX | AX | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 1561902
- Application
- 52507035
Titles3
- German
- Turbinenschaufel mit Turbulatoren
- English
- Turbine blade comprising turbulation promotion devices
- French
- Aube de turbine avec promoteurs de turbulence
Classification
- CPC, 7
- F01D5/187
- F05D2250/141
- F05D2250/30
- F05D2260/2212
- F05D2260/22141
- F05D2250/314
- F05D2250/25
- IPC, 1
- F01D5 18
Designated states36
- Contracting states, 30
- Austria
- Belgium
- Bulgaria
- Switzerland
- Cyprus
- Czechia
- Germany
- Denmark
- Estonia
- Spain
- Finland
- France
- United Kingdom
- Greece
- Hungary
- Ireland
- Iceland
- Italy
- Liechtenstein
- Lithuania
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Poland
and 6 moreShow fewer
- Portugal
- Romania
- Sweden
- Slovenia
- Slovakia
- Türkiye
- Extension states, 6
- Albania
- Bosnia and Herzegovina
- Croatia
- Latvia
- North Macedonia
- Yugoslavia, later Serbia and Montenegro (until 2006)