B64C 11/385
Comprising feathering, braking or stopping systems
Official title: {comprising feathering, braking or stopping systems}
B64C11/385 (Comprising feathering, braking or stopping systems) appears on 86 US grants and 116 published applications in this corpus.
Search patents in B64C- Granted patents
- 86
- Published applications
- 116
- Assignees
- 25
- Inventors
- 175
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 4 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 6 | 3 |
| 2015 | 2 | 1 |
| 2016 | 4 | 3 |
| 2017 | 3 | 3 |
| 2018 | 0 | 8 |
| 2019 | 7 | 11 |
| 2020 | 8 | 15 |
| 2021 | 16 | 6 |
| 2022 | 9 | 7 |
| 2023 | 6 | 2 |
| 2024 | 8 | 12 |
| 2025 | 8 | 9 |
| 2026 | 4 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Controlling rate of rotor feather by system secondary to primary blade angle control system14 Jul 2026US 12,679,527 B2Pratt & Whitney Canada Corp.
- Electronically piloted low pitch stop protection14 Jul 2026US 12,680,457 B2Ratier-Figeac SAS
- Turboprop erroneous blade angle reading accommodation through minimum torque governing28 Apr 2026US 12,612,153 B2Pratt & Whitney Canada Corp.
- Pitch-change mechanism with pitch-locking device comprising a satellite roller screw17 Feb 2026US 12,553,353 B2Safran Aircraft Engines
- Variable pitch fan16 Dec 2025US 12,497,901 B2Safran Aircraft Engines
- Method and avionics device for controlling the pitch angle of a fan or propeller of an aircraft powertrain27 Aug 2026US 2026/0249980 A1Airbus Operations GmbH
- Method and avionics device for controlling the pitch angle of a fan or propeller of an aircraft powertrain27 Aug 2026US 2026/0250015 A1Airbus Operations GmbH
- Pitch-change mechanism with locking device6 Aug 2026US 2026/0225708 A1Safran Aircraft Engines
- Pitch-change mechanism with locking device6 Aug 2026US 2026/0226838 A1Safran Aircraft Engines
- Turbofan engine including a fan actuation system23 Jul 2026US 2026/0210255 A1General Electric Company
Most cited
By later US patents
- Variable pitch counterweighted propeller system with releasable hydraulic pitchlock40US 5,836,743 AUnited Technologies Corporation · 1998
- Rotary hydraulic actuator with hydraulically controlled position limits24US 8,726,787 B2General Electric Company · 2014
- Single blade rotor system for use in a vertical takeoff and landing (VTOL) aircraft18US 9,334,049 B1Amazon Technologies, Inc. · 2016
- Single blade rotor system for use in a vertical takeoff and landing (VTOL) aircraft15US 9,598,169 B1Amazon Technologies, Inc. · 2017
- Propeller brake14US 4,567,965 AAllied Corporation · 1986