F01D 7/00
Rotors with blades adjustable in operation
Official title: Rotors with blades adjustable in operation; Control thereof (for reversing F01D1/30)
F01D7/00 (Rotors with blades adjustable in operation) appears on 458 US grants and 455 published applications in this corpus.
Search patents in F01D- Granted patents
- 458
- Published applications
- 455
- Assignees
- 122
- Inventors
- 757
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 13 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 3 | 4 |
| 2007 | 1 | 2 |
| 2008 | 0 | 5 |
| 2009 | 1 | 6 |
| 2010 | 2 | 9 |
| 2011 | 4 | 9 |
| 2012 | 9 | 16 |
| 2013 | 6 | 31 |
| 2014 | 8 | 26 |
| 2015 | 16 | 20 |
| 2016 | 27 | 22 |
| 2017 | 25 | 35 |
| 2018 | 20 | 19 |
| 2019 | 30 | 23 |
| 2020 | 32 | 24 |
| 2021 | 23 | 32 |
| 2022 | 30 | 31 |
| 2023 | 32 | 26 |
| 2024 | 33 | 43 |
| 2025 | 43 | 29 |
| 2026 | 22 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Propeller assembly including a rigging free beta tube29 Sep 2026US 12,747,670 B1GE Aviation Systems LLC
- Turbine engine including a fan blade sensor system1 Sep 2026US 12,723,517 B2General Electric Company
- Motor cooling shroud for fully reversible turbomachinery4 Aug 2026US 12,698,719 B2Howden Axial Fans Aps
- Rotatable trunnions for variable pitch blades21 Jul 2026US 12,687,116 B1General Electric Company
- Controlling rate of rotor feather by system secondary to primary blade angle control system14 Jul 2026US 12,679,527 B2Pratt & Whitney Canada Corp.
- Turbofan engine including a fan actuation system8 Oct 2026US 2026/0309036 A1General Electric Company
- Turbofan engine including a fan actuation system1 Oct 2026US 2026/0298101 A1General Electric Company
- Fan rotor with actuator with locking device24 Sep 2026US 2026/0285475 A1Safran Aircraft Engines
- Turbofan engine including a fan actuation system17 Sep 2026US 2026/0275875 A1General Electric Company
- Oil tank for turbine engine with centrifugal impeller compatible with negative g10 Sep 2026US 2026/0264843 A1Safran Aero Boosters SA
Most cited
By later US patents
- Pitch change mechanism100US 5,174,716 AGeneral Electric Company · 1992
- Ultra-efficient propulsor with an augmentor fan circumscribing a turbofan98US 8,689,538 B2The Boeing Company · 2014
- Electromechanical apparatus for varying blade of variable-pitch fan blades83US 5,281,094 AAlliedSignal Inc. · 1994
- Ducted prop engine73US 4,704,862 AUnited Technologies Corporation · 1987
- Turbine exhaust case and method of making71US 7,100,358 B2Pratt & Whitney Canada Corp. · 2006