B64C 27/16
Drive of rotors by means
Official title: Drive of rotors by means, e.g. propellers, mounted on rotor blades
B64C27/16 (Drive of rotors by means) appears on 160 US grants and 151 published applications in this corpus.
Search patents in B64C- Granted patents
- 160
- Published applications
- 151
- Assignees
- 63
- Inventors
- 250
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 4 |
| 2008 | 1 | 2 |
| 2009 | 5 | 7 |
| 2010 | 1 | 4 |
| 2011 | 3 | 3 |
| 2012 | 4 | 9 |
| 2013 | 1 | 3 |
| 2014 | 9 | 2 |
| 2015 | 23 | 8 |
| 2016 | 6 | 8 |
| 2017 | 9 | 38 |
| 2018 | 6 | 12 |
| 2019 | 9 | 7 |
| 2020 | 16 | 9 |
| 2021 | 6 | 8 |
| 2022 | 8 | 5 |
| 2023 | 6 | 9 |
| 2024 | 8 | 4 |
| 2025 | 8 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reaction drive helicopter with cyclorotor propulsion and control23 Dec 2025US 12,503,223 B1
- Aircraft propulsion and torque mitigation technologies12 Aug 2025US 12,384,534 B2Thrust Drive LLC
- Method and system for controlling an aircraft propulsion system in an aircraft susceptible to ground resonance29 Jul 2025US 12,371,178 B1Pratt & Whitney Canada Corp.
- Rotor blade and pressure regulating arrangement24 Jun 2025US 12,337,957 B2Genesis Aerotech Limited
- Method for transmitting power based on aerodynamic deceleration, structure and application thereof13 May 2025US 12,296,947 B2Fangsen Intelligent Technology (Foshan) Co., Ltd.
- Vertical take-off and landing aircraft and propulsion assembly20 Aug 2026US 2026/0242058 A1Burl Aerospace Pty Ltd
- Control of Vertical Take Off and Landing Aircraft28 May 2026US 2026/0145778 A1
- Method and System for Controlling an Aircraft Propulsion System in an Aircraft Susceptible to Ground Resonance31 Jul 2025US 2025/0242931 A1Pratt & Whitney Canada Corp.
- Method for driving a rotor with the aid of a jet engine16 May 2024US 2024/0158074 A1Obshchestvo S Ogranichennoj Otvetstvennost'yu “Vasp Ejrkraft”
- Method for transmitting power based on aerodynamic deceleration, structure and application thereof21 Mar 2024US 2024/0092482 A1Foshen Shenfeng Aviation Technology Co., Ltd.
Most cited
By later US patents
- Passenger vehicle employing a circumferentially disposed rotatable thrust assembly95US 6,402,088 B1Aero Copter, Inc. · 2002
- Enhanced flight control systems and methods for a jet powered tri-mode aircraft92US 6,885,917 B2The Boeing Company · 2005
- Rotary aircraft passively stable in hover70US 5,297,759 A1994
- Air jet reaction contrarotating rotor gyrodyne69US 4,589,611 A1986
- Helicopter with a gyroscopic rotor and rotor propellers to provide vectored thrust56US 5,971,320 A1999