B64C 27/82
Rotorcraft: characterised by the provision of an auxiliary rotor or fluid-jet device
Official title: characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft
B64C27/82 (Rotorcraft: characterised by the provision of an auxiliary rotor or fluid-jet device) appears on 701 US grants and 727 published applications in this corpus.
Search patents in B64C- Granted patents
- 701
- Published applications
- 727
- Assignees
- 164
- Inventors
- 1,070
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 10 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 5 |
| 2003 | 2 | 1 |
| 2004 | 5 | 3 |
| 2005 | 4 | 5 |
| 2006 | 5 | 8 |
| 2007 | 5 | 7 |
| 2008 | 2 | 10 |
| 2009 | 4 | 22 |
| 2010 | 6 | 20 |
| 2011 | 12 | 6 |
| 2012 | 12 | 31 |
| 2013 | 11 | 24 |
| 2014 | 22 | 26 |
| 2015 | 30 | 24 |
| 2016 | 26 | 38 |
| 2017 | 23 | 84 |
| 2018 | 34 | 67 |
| 2019 | 66 | 49 |
| 2020 | 70 | 73 |
| 2021 | 43 | 59 |
| 2022 | 59 | 58 |
| 2023 | 76 | 44 |
| 2024 | 43 | 22 |
| 2025 | 28 | 11 |
| 2026 | 17 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B64C 2027/8263Comprising in addition rudders, tails, fins, or the likeIndexing code221
- B64C 2027/8236Including pusher propellersIndexing code209
- B64C 2027/8254Shrouded tail rotorsIndexing code132
- B64C 2027/8209Electrically driven tail rotorsIndexing code86
- B64C 2027/8227Comprising more than one rotorIndexing code78
- B64C 2027/8245Using air jetsIndexing code70
- B64C 2027/8218Wherein the rotor or the jet axis is inclined with respect toIndexing code29
Recent patents
- Rotorcraft with a blade tip illumination system8 Sep 2026US 12,729,012 B2Airbus Helicopters Deutschland GmbH
- Rotorcraft with powerplant exhaust sound attenuation25 Aug 2026US 12,715,576 B2Pratt & Whitney Canada Corp.
- Hoisting flight director mode11 Aug 2026US 12,703,482 B2Rockwell Collins, Inc.
- Rotorcraft with a tail boom and an integral stabilizer arrangement9 Jun 2026US 12,649,571 B2Airbus Helicopters Deutschland GmbH
- Transmission system2 Jun 2026US 12,643,654 B2Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
- Led tail rotor safety and status indication lighting system8 Oct 2026US 2026/0307785 A1Textron Innovations Inc.
- Flying object1 Oct 2026US 2026/0296641 A1Honda Motor Co., Ltd.
- Centrifugal fan propulsion systems and methods for an aerial vehicle1 Oct 2026US 2026/0296685 A1Sacuba Pty Ltd
- Electric flight vehicle24 Sep 2026US 2026/0285510 A1Mitsubishi Heavy Industries, Ltd.
- Compound helicopter with lateral booms17 Sep 2026US 2026/0274404 A1Airbus Helicopters Deutschland GmbH
Most cited
By later US patents
- Marine hulls and drives97US 7,984,684 B22011
- Compound helicopter with no tail rotor83US 4,928,907 AY & B Investment Corporation · 1990
- Gyro stabilized triple mode aircraft79US 6,086,016 A2000
- Helicopter antitorque system using circulation control67US 4,200,252 ASumma Corporation · 1980
- System for controlling and automatically stabilizing the rotational motion of a rotary wing aircraft67US 5,749,540 A1998