F04D 29/323
Adjustable
Official title: {adjustable}
F04D29/323 (Adjustable) appears on 153 US grants and 161 published applications in this corpus.
Search patents in F04D- Granted patents
- 153
- Published applications
- 161
- Assignees
- 42
- Inventors
- 247
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 3 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 3 | 5 |
| 2013 | 2 | 3 |
| 2014 | 3 | 3 |
| 2015 | 4 | 4 |
| 2016 | 2 | 11 |
| 2017 | 7 | 14 |
| 2018 | 9 | 9 |
| 2019 | 18 | 8 |
| 2020 | 9 | 10 |
| 2021 | 11 | 10 |
| 2022 | 12 | 10 |
| 2023 | 12 | 14 |
| 2024 | 14 | 15 |
| 2025 | 15 | 10 |
| 2026 | 5 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotatable trunnions for variable pitch blades21 Jul 2026US 12,687,116 B1General Electric Company
- Variable pitch fan of a gas turbine engine14 Apr 2026US 12,601,271 B2General Electric Company
- Pitch change mechanism with an actuator surrounding a fluid transfer bearing14 Apr 2026US 12,601,272 B2Safran Aircraft Engines
- Variable pitch fan blade retention system10 Feb 2026US 12,546,226 B1General Electric Company
- Variable pitch fans for turbomachinery engines6 Jan 2026US 12,516,646 B2General Electric Company
- Turbofan engine including a fan actuation system10 Sep 2026US 2026/0266307 A1General Electric Company
- Turbofan engine including a fan actuation system27 Aug 2026US 2026/0251152 A1General Electric Company
- Asynchronous airfoil pitch adjustment for aircraft propulsion system6 Aug 2026US 2026/0226837 A1Rtx Corporation
- Aircraft turbine engine having means for detecting the axial displacement of a fan16 Jul 2026US 2026/0201813 A1Safran Aircraft Engines
- Hydraulic compensation device16 Jul 2026US 2026/0201897 A1Safran Aircraft Engines
Most cited
By later US patents
- Electromechanical apparatus for varying blade of variable-pitch fan blades83US 5,281,094 AAlliedSignal Inc. · 1994
- Impact absorbing blade mounts for variable pitch blades46US 4,047,840 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1977
- Dual output variable pitch turbofan actuation system41US 3,994,128 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1976
- Variable pitch turbofan engine and a method for operating same40US 3,946,554 AGeneral Electric Company · 1976
- Variable pitch arrangement for a gas turbine engine36US 4,968,217 AROLLS-ROYCE plc · 1990