B63H 3/00
Propeller-blade pitch changing
Official title: Propeller-blade pitch changing {(aircraft propellers B64C11/30; rotors of turbines F01D7/00; axial wind motors F03D7/022; axial-flow pumps F04D29/00)}
B63H3/00 (Propeller-blade pitch changing) appears on 242 US grants and 146 published applications in this corpus.
Search patents in B63H- Granted patents
- 242
- Published applications
- 146
- Assignees
- 112
- Inventors
- 372
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 9 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 11 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 0 |
| 2002 | 8 | 2 |
| 2003 | 3 | 3 |
| 2004 | 4 | 1 |
| 2005 | 3 | 11 |
| 2006 | 4 | 6 |
| 2007 | 3 | 1 |
| 2008 | 2 | 4 |
| 2009 | 3 | 3 |
| 2010 | 1 | 8 |
| 2011 | 3 | 10 |
| 2012 | 1 | 1 |
| 2013 | 8 | 5 |
| 2014 | 4 | 5 |
| 2015 | 3 | 8 |
| 2016 | 5 | 4 |
| 2017 | 9 | 6 |
| 2018 | 7 | 9 |
| 2019 | 5 | 9 |
| 2020 | 11 | 7 |
| 2021 | 5 | 10 |
| 2022 | 12 | 4 |
| 2023 | 5 | 8 |
| 2024 | 7 | 6 |
| 2025 | 5 | 3 |
| 2026 | 3 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B63H 3/06Propeller-blade pitch changing: characterised by use of non-mechanical actuating means60
- B63H 3/008Propeller-blade pitch changing: characterised by self-adjusting pitch59
- B63H 3/02Actuated by control element coaxial with propeller shaft57
- B63H 3/10Propeller-blade pitch changing: characterised by having pitch control conjoint with propulsion plant45
- B63H 3/002Propeller-blade pitch changing: with individually adjustable blades25
- B63H 3/12The pitch being adjustable only when propeller is stationary16
- B63H 2003/006Detecting or transmitting propeller-blade pitch angleIndexing code12
- B63H 2003/004Comprising means for locking blades in positionIndexing code7
Recent patents
- Propeller with folding blades and propulsion system12 May 2026US 12,623,761 B2Velettrica S.R.L.
- Propulsion device for marine vessel and outboard motor17 Mar 2026US 12,576,956 B2Yamaha Hatsudoki Kabushiki Kaisha
- Charging control method and system for marine propulsion device, and marine propulsion device13 Jan 2026US 12,522,332 B2Guangdong Epropulsion Technology Limited
- Propeller assembly and pitch control unit2 Dec 2025US 12,486,811 B2Ge Aviation Czech S.R.O.
- Adjustable performance for a vehicle19 Aug 2025US 12,391,116 B2Polaris Industries Inc.
- Variable toroidal propeller1 Oct 2026US 2026/0296613 A1Alpraaz AB
- Vessel motion control based on propeller slip24 Sep 2026US 2026/0285459 A1AB Volvo Penta
- Propeller with folding blades and propulsion system10 Sep 2026US 2026/0264822 A1Velettrica S.R.L.
- Method and apparatus for controlling ship propulsion, and a propulsion system20 Aug 2026US 2026/0242042 A1Wartsila Netherlands B.V.
- Pod drive unit23 Jul 2026US 2026/0208835 A1AB Volvo Penta
Most cited
By later US patents
- Marine propellers132US 4,304,524 AWoodcoxon Engineering (International) Limited · 1981
- Electronic throttle control62US 8,534,397 B2Polaris Industries Inc. · 2013
- Actuation system for a controllable pitch propeller51US 6,811,376 B2Hamilton Sundstrand Corporation · 2004
- Adjustable pitch propeller47US 5,997,253 ABrunswick Corporation · 1999
- Method for selecting the pitch of a controllable pitch marine propeller47US 6,379,114 B1Brunswick Corporation · 2002