B64C 27/57
Automatic or condition responsive
Official title: automatic or condition responsive, e.g. responsive to rotor speed, torque or thrust
B64C27/57 (Automatic or condition responsive) appears on 345 US grants and 382 published applications in this corpus.
Search patents in B64C- Granted patents
- 345
- Published applications
- 382
- Assignees
- 99
- Inventors
- 483
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 6 |
| 2012 | 3 | 8 |
| 2013 | 4 | 12 |
| 2014 | 10 | 15 |
| 2015 | 18 | 22 |
| 2016 | 21 | 19 |
| 2017 | 22 | 65 |
| 2018 | 26 | 39 |
| 2019 | 31 | 45 |
| 2020 | 42 | 31 |
| 2021 | 40 | 29 |
| 2022 | 25 | 23 |
| 2023 | 33 | 23 |
| 2024 | 22 | 13 |
| 2025 | 21 | 11 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automated and user assisted autorotation for air vehicle6 Oct 2026US 12,754,570 B2Skyryse, Inc.
- Rotor position control system11 Aug 2026US 12,703,481 B2Textron Innovations Inc.
- Rotorcraft system for command mode transitions7 Jul 2026US 12,673,766 B2Textron Innovations Inc.
- Aircraft flight compensator9 Jun 2026US 12,649,567 B2Safran Electronics & Defense
- Blade pitch detection for an aerial vehicle26 May 2026US 12,637,209 B2Unmanned Aerospace LLC
- Swashplateless helicopter and control method thereof27 Aug 2026US 2026/0249987 A1Guangzhou Walkera Technology Co., Ltd
- Radio controlled aircraft, remote controller and methods for use therewith20 Aug 2026US 2026/0241304 A1Drone-Control, LLC
- Systems and methods for control allocation for electric vertical take-off and landing aircraft25 Jun 2026US 2026/0178039 A1Archer Aviation Inc.
- Rotorcraft with a flight control system for improving rotorcraft control upon occurrence of an in-flight shutdown in an asymmetric flight regime mode18 Jun 2026US 2026/0167328 A1Airbus Helicopters
- Rotorcraft fly-by-wire flight control system11 Jun 2026US 2026/0159230 A1Honeywell International Inc.
Most cited
By later US patents
- Modular and morphable air vehicle125US 9,045,226 B2Piasecki Aircraft Corporation · 2015
- Modular and morphable air vehicle65US 9,610,817 B12017
- Advanced control system for a rotor and/or a compound or rotary wing vehicle59US 4,025,230 ALockheed Aircraft Corporation · 1977
- All-electric multirotor full-scale aircraft for commuting, personal transportation, and security/surveillance45US 9,242,728 B2Alakai Technologies Corporation · 2016
- Helicopter45US 9,456,185 B2Geotech Environmental Equipment, Inc. · 2016