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Legal status
Patent not validated
| (51) | INT.CL. | F02K 3/06 | |
| F01D 5/26 | |||
| F01D 5/18 |
| (11) | Number of the document | 2589781 |
| (13) | Kind of document | T |
| (96) | European patent application number | 12190239.9 |
| Date of filing the European patent application | 2012-10-26 | |
| (97) | Date of publication of the European application | 2013-05-08 |
| (45) | Date of publication and mention of the grant of the patent | 2020-01-01 |
| (46) | Date of publication of the claims translation |
| (30) | Number | Date | Country code |
| 201113288250 | 2011-11-03 | US |
| (72) |
Murdock, James R., US
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| (73) |
United Technologies Corporation,
10 Farm Springs Road, Farmington, CT 06032,
US
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| (54) | Hollow fan blade tuning using distinct filler materials and method of designing such a fan blade |
| Hollow fan blade tuning using distinct filler materials and method of designing such a fan blade |