B64C 11/003
Variable-diameter propellers
Official title: {Variable-diameter propellers; Mechanisms therefor}
B64C11/003 (Variable-diameter propellers) appears on 35 US grants and 26 published applications in this corpus.
Search patents in B64C- Granted patents
- 35
- Published applications
- 26
- Assignees
- 16
- Inventors
- 64
- Latest grant
- 9 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 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 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 2 | 5 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 4 | 1 |
| 2021 | 2 | 3 |
| 2022 | 3 | 3 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Propeller safety device9 Jan 2024US 11,866,150 B2Hyundai Motor Company
- Propeller control system of air mobility19 Dec 2023US 11,845,533 B2Hyundai Motor Company
- Tip gap control systems with active blade tips28 Jun 2022US 11,370,536 B2Textron Innovations Inc.
- Sacrificial blade tips for ducted aircraft15 Mar 2022US 11,273,910 B2Textron Innovations Inc.
- Six degree of freedom aerial vehicle having reconfigurable propellers15 Feb 2022US 11,249,477 B2Amazon Technologies, Inc.
- Foldable Propeller Hub Mechanisms Based on Rolling Elements11 Jun 2026US 2026/0159222 A1Emraer SA
- Propeller control system of air mobility22 Dec 2022US 2022/0402593 A1Hyundai Motor Company
- Propeller safety device15 Sep 2022US 2022/0289361 A1Hyundai Motor Company
- Extendable blade for drone systems3 Mar 2022US 2022/0063798 A1
- Sacrificial Blade Tips for Ducted Aircraft23 Dec 2021US 2021/0394888 A1Textron Innovations Inc.
Most cited
By later US patents
- Vertical takeoff and landing aircraft119US 8,505,846 B12013
- Mechanism for synchronously varying diameter of a plurality of rotors and for limiting the diameters thereof68US 4,142,697 AUnited Technologies Corporation · 1979
- Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise28US 5,735,670 ASikorsky Aircraft Corporation · 1998
- Variable diameter rotor blade actuation system24US 6,019,578 ASikorsky Aircraft Corporation · 2000
- Rotor system having alternating length rotor blades for reducing blade-vortex interaction (BVI) noise23US 5,620,303 ASikorsky Aircraft Corporation · 1997