F01D 5/30
Fixing blades to rotors
Official title: Fixing blades to rotors; Blade roots {; Blade spacers}
F01D5/30 (Fixing blades to rotors) appears on 2,501 US grants and 2,370 published applications in this corpus.
Search patents in F01D- Granted patents
- 2,501
- Published applications
- 2,370
- Assignees
- 303
- Inventors
- 4,152
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 19 | 0 |
| 1978 | 15 | 0 |
| 1979 | 8 | 0 |
| 1980 | 11 | 0 |
| 1981 | 13 | 0 |
| 1982 | 16 | 0 |
| 1983 | 10 | 0 |
| 1984 | 29 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 23 | 0 |
| 1988 | 21 | 0 |
| 1989 | 25 | 0 |
| 1990 | 11 | 0 |
| 1991 | 23 | 0 |
| 1992 | 32 | 0 |
| 1993 | 17 | 0 |
| 1994 | 27 | 0 |
| 1995 | 25 | 0 |
| 1996 | 29 | 0 |
| 1997 | 10 | 0 |
| 1998 | 21 | 0 |
| 1999 | 19 | 0 |
| 2000 | 27 | 0 |
| 2001 | 20 | 6 |
| 2002 | 39 | 20 |
| 2003 | 23 | 22 |
| 2004 | 30 | 57 |
| 2005 | 27 | 55 |
| 2006 | 30 | 54 |
| 2007 | 36 | 49 |
| 2008 | 39 | 64 |
| 2009 | 29 | 84 |
| 2010 | 34 | 89 |
| 2011 | 46 | 94 |
| 2012 | 80 | 125 |
| 2013 | 76 | 133 |
| 2014 | 112 | 150 |
| 2015 | 95 | 155 |
| 2016 | 120 | 222 |
| 2017 | 145 | 149 |
| 2018 | 151 | 149 |
| 2019 | 171 | 139 |
| 2020 | 206 | 137 |
| 2021 | 144 | 97 |
| 2022 | 114 | 69 |
| 2023 | 69 | 69 |
| 2024 | 94 | 89 |
| 2025 | 83 | 49 |
| 2026 | 28 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01D 5/3007Of axial insertion type1,352
- F01D 5/32Locking490
- F01D 5/3023Of radial insertion type454
- F01D 5/3092Protective layers between blade root and rotor disc surfaces228
- F01D 5/3061By welding, brazing174
- F01D 5/3084The blades being made of ceramics174
- F01D 5/3053By means of pins172
- F01D 5/3069Between two discs or rings78
All 9 subgroupsShow fewer
Recent patents
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- Turbine rotor dovetail structure with splines17 Sep 2026US 2026/0275874 A1Pratt & Whitney Canada Corp.
- Gas turbine engines with blade assemblies having cooling holes3 Sep 2026US 2026/0258731 A1General Electric Company
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Most cited
By later US patents
- Wide chord fan blade334US 5,141,400 AGeneral Electric Company · 1992
- Stitched composite fan blade98US 6,431,837 B12002
- Leak resistant vane cluster96US 6,910,854 B2United Technologies Corporation · 2005
- Ceramic airfoil91US 6,000,906 AAlliedSignal Inc. · 1999
- Coated article and method for inhibiting frictional wear between mating titanium alloy substrates in a gas turbine engine90US 6,158,963 AUnited Technologies Corporation · 2000