B64C 27/72
Means acting on blades
B64C27/72 (Means acting on blades) appears on 392 US grants and 325 published applications in this corpus.
Search patents in B64C- Granted patents
- 392
- Published applications
- 325
- Assignees
- 137
- Inventors
- 607
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 13 | 2 |
| 2002 | 14 | 9 |
| 2003 | 8 | 6 |
| 2004 | 7 | 6 |
| 2005 | 5 | 9 |
| 2006 | 6 | 8 |
| 2007 | 3 | 7 |
| 2008 | 4 | 13 |
| 2009 | 4 | 6 |
| 2010 | 12 | 9 |
| 2011 | 5 | 11 |
| 2012 | 11 | 13 |
| 2013 | 8 | 18 |
| 2014 | 20 | 21 |
| 2015 | 24 | 17 |
| 2016 | 21 | 13 |
| 2017 | 13 | 13 |
| 2018 | 8 | 19 |
| 2019 | 19 | 27 |
| 2020 | 25 | 30 |
| 2021 | 23 | 12 |
| 2022 | 13 | 17 |
| 2023 | 22 | 8 |
| 2024 | 17 | 14 |
| 2025 | 15 | 10 |
| 2026 | 8 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Helicopter rotor head structure15 Sep 2026US 12,735,178 B2Tibet Chuangbo General Aviation Technology Co., Ltd.
- Systems and methods for improved rotor assembly for use with a stator11 Aug 2026US 12,703,484 B2MagLev Aero Inc.
- Propulsor external hydraulic control system14 Apr 2026US 12,600,469 B2Lockheed Martin Corporation
- Hybrid pitch bearing for rigid rotor7 Apr 2026US 12,595,047 B2Lockheed Martin Corporation
- Blade position control system31 Mar 2026US 12,589,868 B2Textron Innovations Inc.
- Systems and methods for vertical takeoff and landing vehicle with stator stabilization10 Sep 2026US 2026/0264849 A1MagLev Aero Inc.
- Swashplateless helicopter and control method thereof27 Aug 2026US 2026/0249987 A1Guangzhou Walkera Technology Co., Ltd
- A swash plate27 Aug 2026US 2026/0249988 A1BAE SYSTEMS plc
- Systems, methods, and devices for reactionless cyclic rotors30 Jul 2026US 2026/0217368 A1Supernal, LLC
- Anti-Backlash Flight Control Actuator System23 Jul 2026US 2026/0208858 A1Archer Aviation Inc.
Most cited
By later US patents
- High-efficiency, large stroke electromechanical actuator1,075US 5,907,211 AMassachusetts Institute of Technology · 1999
- Soft actuators and artificial muscles184US 6,109,852 AUniversity of New Mexico · 2000
- Ionic polymer sensors and actuators110US 6,475,639 B22002
- Composites for structural control107US 6,048,622 AMassachusetts Institute of Technology · 2000
- Composites for structural control78US 5,869,189 AMassachusetts Institute of Technology · 1999