B63H 3/008
Propeller-blade pitch changing: characterised by self-adjusting pitch
Official title: {characterised by self-adjusting pitch, e.g. by means of springs, centrifugal forces, hydrodynamic forces}
B63H3/008 (Propeller-blade pitch changing: characterised by self-adjusting pitch) appears on 59 US grants and 33 published applications in this corpus.
Search patents in B63H- Granted patents
- 59
- Published applications
- 33
- Assignees
- 27
- Inventors
- 84
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 8 |
| 2006 | 3 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 3 | 3 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 2 | 1 |
| 2017 | 3 | 1 |
| 2018 | 2 | 1 |
| 2019 | 2 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 3 |
| 2024 | 3 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Propulsion device for marine vessel and outboard motor17 Mar 2026US 12,576,956 B2Yamaha Hatsudoki Kabushiki Kaisha
- Hybrid propulsor for watercraft29 Apr 2025US 12,286,203 B2
- Variable-pitch propeller having optimal hub-to-tip diameter ratio3 Dec 2024US 12,157,550 B2Hyundai Heavy Industries Co., Ltd.
- Self-adjusting variable pitch propeller1 Oct 2024US 12,103,656 B2Submersed Technologies Pp1 AB
- Automatic passive variable pitch propeller13 Feb 2024US 11,897,592 B1The United States of America as represented by the Secretary of the Navy
- Propeller with folding blades and propulsion system10 Sep 2026US 2026/0264822 A1Velettrica S.R.L.
- Nautical propeller7 May 2026US 2026/0125142 A1Max Prop S.R.L.
- Marine propulsion unit19 Mar 2026US 2026/0077844 A1AB Volvo Penta
- Marine propulsion unit19 Mar 2026US 2026/0077845 A1AB Volvo Penta
- A self-adjusting variable pitch propeller8 Aug 2024US 2024/0262477 A1Submersed Technologies Pp1 AB
Most cited
By later US patents
- Marine propellers132US 4,304,524 AWoodcoxon Engineering (International) Limited · 1981
- Variable pitch propeller20US 4,792,279 A1988
- Automatic centrifugal force variable pitch propeller19US 5,286,166 A1994
- Controllable pitch propeller with a fail safe increased pitch movement17US 6,340,290 B12002
- Controllable pitch propeller for propulsor and hydroturbine15US 5,554,003 A1996