B64C 27/30
With provision for reducing drag of inoperative rotor
Official title: with provision for reducing drag of inoperative rotor
B64C27/30 (With provision for reducing drag of inoperative rotor) appears on 175 US grants and 180 published applications in this corpus.
Search patents in B64C- Granted patents
- 175
- Published applications
- 180
- Assignees
- 51
- Inventors
- 233
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 4 |
| 2011 | 0 | 0 |
| 2012 | 0 | 4 |
| 2013 | 3 | 1 |
| 2014 | 2 | 1 |
| 2015 | 6 | 3 |
| 2016 | 3 | 10 |
| 2017 | 5 | 9 |
| 2018 | 16 | 12 |
| 2019 | 11 | 26 |
| 2020 | 19 | 14 |
| 2021 | 23 | 19 |
| 2022 | 15 | 16 |
| 2023 | 21 | 22 |
| 2024 | 17 | 15 |
| 2025 | 15 | 8 |
| 2026 | 9 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotor position control system11 Aug 2026US 12,703,481 B2Textron Innovations Inc.
- Dynamic aircraft routing11 Aug 2026US 12,705,551 B2Joby Aero, Inc.
- Drag reducing spinner for high speed stop fold rotor23 Jun 2026US 12,662,243 B2Textron Innovations Inc.
- System and method of rotor management16 Jun 2026US 12,654,848 B2Beta Air, LLC
- Vertical take-off and landing module of a fixed wing aircraft, and related method and system16 Jun 2026US 12,654,849 B2Politecnico Di Torino
- System and method of rotor management8 Oct 2026US 2026/0307786 A1Beta Air, LLC
- Drag Reducing Spinner for High Speed Stop Fold Rotor24 Sep 2026US 2026/0285481 A1Textron Innovations Inc.
- Aerodynamic design of propeller blades in vtol aircraft23 Jul 2026US 2026/0208857 A1Archer Aviation Inc.
- Propulsor drive shaft with branched portion23 Jul 2026US 2026/0208859 A1Beta Air, LLC
- Systems and methods for retracting lift propeller in evtol aircraft23 Jul 2026US 2026/0208861 A1Archer Aviation Inc.
Most cited
By later US patents
- Wide-range blade pitch control for a folding rotor112US 5,085,315 A1992
- Aircraft with selectively attachable passenger pod assembly112US 9,963,228 B2Bell Helicopter Textron Inc. · 2018
- Rotor for a dual mode aircraft86US 8,376,264 B12013
- Passenger pod assembly transportation system70US 10,011,351 B2Bell Helicopter Textron Inc. · 2018
- Method and apparatus for in-flight blade folding69US 8,998,125 B2Textron Innovations Inc. · 2015