B64C 27/008
Rotors tracking or balancing devices
Official title: {Rotors tracking or balancing devices}
B64C27/008 (Rotors tracking or balancing devices) appears on 177 US grants and 172 published applications in this corpus.
Search patents in B64C- Granted patents
- 177
- Published applications
- 172
- Assignees
- 62
- Inventors
- 351
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 1 |
| 2004 | 0 | 3 |
| 2005 | 0 | 4 |
| 2006 | 6 | 1 |
| 2007 | 1 | 0 |
| 2008 | 3 | 3 |
| 2009 | 1 | 3 |
| 2010 | 0 | 2 |
| 2011 | 3 | 2 |
| 2012 | 3 | 4 |
| 2013 | 1 | 5 |
| 2014 | 5 | 11 |
| 2015 | 7 | 12 |
| 2016 | 9 | 9 |
| 2017 | 17 | 39 |
| 2018 | 8 | 13 |
| 2019 | 8 | 15 |
| 2020 | 23 | 6 |
| 2021 | 12 | 13 |
| 2022 | 7 | 5 |
| 2023 | 10 | 8 |
| 2024 | 9 | 5 |
| 2025 | 7 | 5 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotorcraft system for command mode transitions7 Jul 2026US 12,673,766 B2Textron Innovations Inc.
- System and method of rotor management16 Jun 2026US 12,654,848 B2Beta Air, LLC
- Tunable mass damper assembly for a rotor blade26 May 2026US 12,637,206 B2Lockheed Martin Corporation
- Devices and methods to verify main rotor swashplate positioning21 Apr 2026US 12,606,320 B2Textron Innovations Inc.
- Sound-reducing rotor blade tracking wedge profile31 Mar 2026US 12,589,863 B1Haymatt, L.L.C.
- System and method of rotor management8 Oct 2026US 2026/0307786 A1Beta Air, LLC
- Tunable mass damper assembly for a rotor blade25 Sep 2025US 2025/0296678 A1Lockheed Martin Corporation
- Rotorcraft system for command mode transitions31 Jul 2025US 2025/0242908 A1Textron Innovations Inc.
- System and method of rotor management19 Jun 2025US 2025/0197002 A1Beta Air, LLC
- Tip end joint arrangement for a rotor blade with reconfigurable attributes for structural and aerodynamic tuning5 Jun 2025US 2025/0178721 A1Lockheed Martin Corporation
Most cited
By later US patents
- Helicopter in-flight rotor tracking system, method, and smart actuator therefor60US 6,322,324 B1The Boeing Company · 2001
- Method and apparatus to determine need for rotor blade pitch adjustment and/or blade substitution57US 4,053,123 AChadwick-Helmuth Company, Inc. · 1977
- Apparatus and method for adjusting rotor blade tracking43US 5,913,659 AUnited Technologies Corporation · 1999
- Braided spar for a rotor blade and method of manufacture thereof42US 7,165,945 B2Sikorsky Aircraft Corporation · 2007
- Composite tip weight attachment36US 3,999,888 AUnited Technologies Corporation · 1976