B64C 27/327
Retention means relieving the stress from the arm
Official title: {Retention means relieving the stress from the arm, e.g. tie-bars}
B64C27/327 (Retention means relieving the stress from the arm) appears on 8 US grants and 6 published applications in this corpus.
Search patents in B64C- Granted patents
- 8
- Published applications
- 6
- Assignees
- 9
- Inventors
- 30
- Latest grant
- 17 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotor mast with composite insert17 Jan 2023US 11,554,858 B2Textron Innovations Inc.
- Rigid rotor head with tension torsion (TT) strap retention30 Jun 2020US 10,696,386 B2Sikorsky Aircraft Corporation
- Mounting plates for rotor hub accessories10 Dec 2019US 10,501,174 B2Sikorsky Aircraft Corporation
- Rotorcraft rotor head, which is rigid in drag and articulated in pitch and flapping12 Dec 1995US 5,474,424 AAerospatiale Societe Nationale Industrielle
- Reinforced connecting link means12 Nov 1985US 4,552,035 ADunlop Limited
- Compact propeller blade retention assembly23 Apr 2026US 2026/0109458 A1Lockheed Martin Corporation
- Compact propeller blade retention assembly10 Aug 2023US 2023/0249811 A1Lockheed Martin Corporation
- Rotor mast with composite insert10 Dec 2020US 2020/0385108 A1Bell Helicopter Textron Inc.
- Mounting plates for rotor hub accessories10 Jan 2019US 2019/0009896 A1Sikorsky Aircraft Corporation
- Pitch bearing assembly for rotor system and aircraft25 Oct 2018US 2018/0305006 A1Sikorsky Aircraft Corporation
Most cited
By later US patents
- Method for producing a bendable and twistable element and such an element produced thereby19US 4,386,989 ASociete Nationale Industrielle et Aerospatiale · 1983
- Reinforced connecting link means16US 4,552,035 ADunlop Limited · 1985
- Rotorcraft rotor head, which is rigid in drag and articulated in pitch and flapping8US 5,474,424 AAerospatiale Societe Nationale Industrielle · 1995
- Damping device for a helicopter rotor blade7US 4,360,337 AMesserschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftung · 1982
- Rigid rotor head with tension torsion (TT) strap retention2US 10,696,386 B2Sikorsky Aircraft Corporation · 2020