B64C 11/301
Characterised by blade position indicating means
Official title: {characterised by blade position indicating means}
B64C11/301 (Characterised by blade position indicating means) appears on 70 US grants and 71 published applications in this corpus.
Search patents in B64C- Granted patents
- 70
- Published applications
- 71
- Assignees
- 21
- Inventors
- 99
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 2 |
| 2018 | 1 | 6 |
| 2019 | 4 | 5 |
| 2020 | 8 | 15 |
| 2021 | 7 | 14 |
| 2022 | 16 | 11 |
| 2023 | 13 | 3 |
| 2024 | 6 | 1 |
| 2025 | 3 | 7 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Disengagement for reverse propeller protection26 May 2026US 12,637,202 B2Pratt & Whitney Canada Corp.
- Turboprop erroneous blade angle reading accommodation through minimum torque governing28 Apr 2026US 12,612,153 B2Pratt & Whitney Canada Corp.
- Device for assisting with regulation of propellers of aeronautical turbomachinery31 Mar 2026US 12,589,859 B2Safran Aircraft Engines
- Health monitoring system10 Feb 2026US 12,545,431 B2Ratier-Figeac SAS
- Protection system13 Jan 2026US 12,522,346 B2Ratier-Figeac SAS
- 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
- Detection of change in the relative position of beta sensors26 Mar 2026US 2026/0084839 A1Pratt & Whitney Canada Corp.
- Detection of change in the relative position of beta sensors to beta ring26 Mar 2026US 2026/0085948 A1Pratt & Whitney Canada Corp.
- System and method for measuring an axial position of a rotating component13 Nov 2025US 2025/0346347 A1Pratt & Whitney Canada Corp.
- Sensing system9 Oct 2025US 2025/0314506 A1Ratier-Figeac SAS
Most cited
By later US patents
- Variable pitch propeller control system53US 6,422,816 B1Hamilton Sundstrand Corporation · 2002
- System and method for electronic propeller blade angle position feedback23US 9,821,901 B2Pratt & Whitney Canada Corp. · 2017
- Apparatus for indicating the pitch of turbofan blades20US 5,211,539 AAllied-Signal Inc. · 1993
- Method and apparatus for self-contained variable pitch and/or constant speed propeller including provisions for feathering and reverse pitch operation18US 6,672,835 B12004
- Aircraft engine propulsor blade pitch sensing12US 4,948,337 AUnited Technologies Corporation · 1990