B64C 27/625
Including rotating masses or servo rotors
Official title: including rotating masses or servo rotors
B64C27/625 (Including rotating masses or servo rotors) appears on 32 US grants and 31 published applications in this corpus.
Search patents in B64C- Granted patents
- 32
- Published applications
- 31
- Assignees
- 23
- Inventors
- 50
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 3 |
| 2018 | 0 | 0 |
| 2019 | 3 | 4 |
| 2020 | 4 | 5 |
| 2021 | 2 | 1 |
| 2022 | 2 | 2 |
| 2023 | 5 | 3 |
| 2024 | 3 | 3 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Anti-backlash flight control actuator system14 Oct 2025US 12,441,465 B2Archer Aviation Inc.
- Aerial vehicle4 Feb 2025US 12,214,874 B2Unmanned Aerospace LLC
- Ganged servo flight control system for an unmanned aerial vehicle6 Aug 2024US 12,054,249 B2AeroVironment, Inc.
- Cyclic pitch angle adjustment apparatus16 Apr 2024US 11,958,594 B2Airbus Helicopters Deutschland GmbH
- Aerial vehicle16 Jan 2024US 11,873,087 B2Unmanned Aerospace LLC
- Anti-Backlash Flight Control Actuator System23 Jul 2026US 2026/0208858 A1Archer Aviation Inc.
- Rotor blade assembly for unmanned aerial vehicle systems and methods9 Oct 2025US 2025/0313359 A1FLIR Unmanned Aerial Systems AS
- Aerial Vehicle28 Nov 2024US 2024/0391585 A1Unmanned Aerospace LLC
- Ganged servo flight control system for an unmanned aerial vehicle7 Nov 2024US 2024/0367786 A1AeroVironment, Inc.
- Anti-Backlash Flight Control Actuator System27 Jun 2024US 2024/0208645 A1Overair, Inc.
Most cited
By later US patents
- Helicopter having rotors equipped with flaps40US 5,255,871 A1993
- Stabilizing and control device for two-bladed helicopter rotors30US 4,118,143 A1978
- Helicopter with main and auxiliary rotors19US 8,052,500 B2Silverlit Limited · 2011
- Adjustable propeller blade with sound flaps14US 10,370,098 B1Amazon Technologies, Inc. · 2019
- Helicopter with horizontal control13US 7,662,013 B2Silverlit Toys Manufactory, Ltd. · 2010