B63H 2023/067
The elements being formed by two or more coaxial shafts
Official title: {the elements being formed by two or more coaxial shafts, e.g. counter-rotating shafts}
B63H2023/067 (The elements being formed by two or more coaxial shafts) appears on 14 US grants and 14 published applications in this corpus.
Search patents in B63H- Granted patents
- 14
- Published applications
- 14
- Assignees
- 10
- Inventors
- 43
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Diagnostics system for a dual propeller drive unit9 Jun 2026US 12,649,549 B2AB Volvo Penta
- Marine propulsion system supported by a strut2 Sep 2025US 12,403,999 B2ZF Friedrichshafen AG
- Systems and methods for adjusting the rotational timing between driveshafts24 May 2022US 11,339,860 B1Brunswick Corporation
- Airboat transmission for driving counter-rotating propellers8 Mar 2022US 11,268,593 B2
- Strut mounted gear box for counter rotating propellers12 Jan 2021US 10,889,362 B2
- Diagnostics system for a dual propeller drive unit11 Jul 2024US 2024/0227994 A1AB Volvo Penta
- Marine propulsion system supported by a strut7 Sep 2023US 2023/0278690 A1ZF Friedrichshafen AG
- Coaxial contra-rotating circumferential thruster9 Jun 2022US 2022/0177105 A1
- Strut mounted gear box for counter rotating propellers5 Mar 2020US 2020/0070944 A1
- Airboat transmission for driving counter-rotating propellers7 Nov 2019US 2019/0338833 A1
Most cited
By later US patents
- Contra-rotating propulsor for marine propulsion19US 10,392,089 B2Michigan Marine Propulsion Systems, LLC · 2019
- Boat hull with outboard drive and outboard drive for boats15US 7,182,657 B2AB Volvo Penta · 2007
- Boat propulsion unit15US 8,277,270 B2Yamaha Hatsudoki Kabushiki Kaisha · 2012
- Counter-rotating transmission12US 6,540,570 B12003
- Counter rotating air propeller drive system3US 6,905,380 B1Husky Airboats Ltd. · 2005