B64C 11/06
For variable-pitch blades
Official title: for variable-pitch blades
B64C11/06 (For variable-pitch blades) appears on 273 US grants and 285 published applications in this corpus.
Search patents in B64C- Granted patents
- 273
- Published applications
- 285
- Assignees
- 88
- Inventors
- 463
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 3 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 4 |
| 2010 | 1 | 6 |
| 2011 | 1 | 7 |
| 2012 | 5 | 7 |
| 2013 | 3 | 8 |
| 2014 | 8 | 6 |
| 2015 | 7 | 12 |
| 2016 | 8 | 14 |
| 2017 | 10 | 20 |
| 2018 | 16 | 21 |
| 2019 | 26 | 26 |
| 2020 | 23 | 12 |
| 2021 | 22 | 26 |
| 2022 | 23 | 20 |
| 2023 | 27 | 26 |
| 2024 | 25 | 19 |
| 2025 | 26 | 14 |
| 2026 | 8 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Energy recovery system and method for an aircraft6 Oct 2026US 12,752,925 B2Airbus Operations S.L.U.
- Adjusting pitch for airfoils of an aircraft propulsion system30 Jun 2026US 12,668,354 B2Rtx Corporation
- Slidable liners in swirl recovery vane structure26 May 2026US 12,638,025 B2Rtx Corporation
- Rotor assemblies for vehicle propulsion28 Apr 2026US 12,612,027 B2Textron Innovations Inc.
- Pitch change mechanism with an actuator surrounding a fluid transfer bearing14 Apr 2026US 12,601,272 B2Safran Aircraft Engines
- Variable-pitch assembly for a turbomachine fan8 Oct 2026US 2026/0307778 A1Safran Aircraft Engines
- Variable toroidal propeller1 Oct 2026US 2026/0296613 A1Alpraaz AB
- Turbofan engine including a fan actuation system10 Sep 2026US 2026/0266309 A1General Electric Company
- Propulsor assembly for a turbine engine27 Aug 2026US 2026/0251154 A1GE AEROSPACE POLAND sp. z o. o.
- Propeller blade and method for repairing a propeller blade20 Aug 2026US 2026/0242053 A1RöDer PräZision GmbH
Most cited
By later US patents
- Control system for blades for a variable pitch propeller63US 6,077,040 AUnited Technologies Corporation · 2000
- Propeller blade retention system43US 5,263,898 AGeneral Electric Company · 1993
- Rotor for a turbomachine40US 7,214,035 B22007
- Bar wedge preload apparatus for a propeller blade36US 6,213,719 B1United Technologies Corporation · 2001
- Blade retention apparatus with elastomeric preload34US 5,118,256 AUnited Technologies Corporation · 1992