B63H 2005/106
With drive shafts of second or further propellers co-axially passing through hub
Official title: {with drive shafts of second or further propellers co-axially passing through hub of first propeller, e.g. counter-rotating tandem propellers with co-axial drive shafts}
B63H2005/106 (With drive shafts of second or further propellers co-axially passing through hub) appears on 51 US grants and 45 published applications in this corpus.
Search patents in B63H- Granted patents
- 51
- Published applications
- 45
- Assignees
- 24
- Inventors
- 107
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 4 |
| 2015 | 3 | 4 |
| 2016 | 1 | 3 |
| 2017 | 3 | 1 |
| 2018 | 3 | 2 |
| 2019 | 4 | 3 |
| 2020 | 3 | 4 |
| 2021 | 4 | 2 |
| 2022 | 4 | 4 |
| 2023 | 2 | 1 |
| 2024 | 3 | 2 |
| 2025 | 3 | 4 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Outboard motor8 Sep 2026US 12,728,973 B2Suzuki Motor Corporation
- Diagnostics system for a dual propeller drive unit9 Jun 2026US 12,649,549 B2AB Volvo Penta
- Enhanced performance parallel loop blade propellers14 Apr 2026US 12,600,448 B1
- Angularly positioned marine propeller combination and a method of operating a marine propeller combination16 Dec 2025US 12,497,147 B2AB Volvo Penta
- Duo-propellers and single propellers26 Aug 2025US 12,397,889 B2Sharrow Engineering LLC
- Marine drive system comprising an interceptor assembly4 Jun 2026US 2026/0152270 A1AB Volvo Penta
- Marine controllable-pitch propeller, propeller system for a boat and boat including the same30 Apr 2026US 2026/0116520 A1AB Volvo Penta
- Marine drive transmission with contra-rotating propellers29 Jan 2026US 2026/0028104 A1ZF Friedrichshafen AG
- Marine drive unit15 Jan 2026US 2026/0015072 A1AB Volvo Penta
- Duo-propellers and single propellers27 Nov 2025US 2025/0360996 A1
Most cited
By later US patents
- Drive means in a boat31US 6,623,320 B1AB Volvo Penta · 2003
- Contra-rotating propulsor for marine propulsion19US 10,392,089 B2Michigan Marine Propulsion Systems, LLC · 2019
- Counter-rotating boat propeller drive17US 5,017,168 A1991
- Transmission system for counter-rotational propulsion device13US 5,601,464 ASanshin Kogyo Kabushiki Kaisha · 1997
- Seal arrangement for propeller shafts of ships13US 5,624,290 ABlohm + Voss Holding AG · 1997