F02C 3/113
With variable power transmission between rotors
Official title: with variable power transmission between rotors
F02C3/113 (With variable power transmission between rotors) appears on 229 US grants and 280 published applications in this corpus.
Search patents in F02C- Granted patents
- 229
- Published applications
- 280
- Assignees
- 63
- Inventors
- 356
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 3 |
| 2007 | 0 | 7 |
| 2008 | 2 | 4 |
| 2009 | 6 | 3 |
| 2010 | 4 | 4 |
| 2011 | 1 | 3 |
| 2012 | 3 | 8 |
| 2013 | 6 | 11 |
| 2014 | 9 | 12 |
| 2015 | 7 | 13 |
| 2016 | 6 | 11 |
| 2017 | 4 | 10 |
| 2018 | 7 | 14 |
| 2019 | 16 | 16 |
| 2020 | 13 | 28 |
| 2021 | 20 | 45 |
| 2022 | 30 | 16 |
| 2023 | 24 | 17 |
| 2024 | 24 | 18 |
| 2025 | 17 | 14 |
| 2026 | 10 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control system for open rotor propulsion system with one or more sensors9 Jun 2026US 12,650,085 B1Rtx Corporation
- Gearboxes for aircraft gas turbine engines26 May 2026US 12,637,961 B2ROLLS-ROYCE plc
- Gear changing system for an accessory gearbox of an aircraft turbine engine and method of use26 May 2026US 12,637,979 B2Safran Aircraft Engines
- Electrical power system for a vehicle17 Mar 2026US 12,577,906 B2General Electric Company
- Turboshaft engine clutch configuration10 Mar 2026US 12,571,438 B2General Electric Company
- Two-speed epicyclic gearbox for aircraft propulsion system20 Aug 2026US 2026/0242065 A1Pratt & Whitney Canada Corp.
- Power transfer assembly for an aircraft propulsion system23 Jul 2026US 2026/0208871 A1Rtx Corporation
- Hybrid aircraft propulsion system23 Jul 2026US 2026/0210264 A1Rtx Corporation
- Powerplant Assembly for an Aircraft16 Jul 2026US 2026/0200581 A1Pratt & Whitney Canada Corp.
- Symmetric Open Propulsor Rotating Patterns for Aircraft16 Jul 2026US 2026/0200583 A1Rtx Corporation
Most cited
By later US patents
- Differential geared engine201US 4,251,987 AGeneral Electric Company · 1981
- Shaft power transfer in gas turbine engines with machines operable as generators or motors166US 5,694,765 AROLLS-ROYCE plc · 1997
- Gas turbine engine system127US 5,867,979 AROLLS-ROYCE plc · 1999
- Aircraft, propulsion system, and system for taxiing an aircraft62US 8,727,270 B2ROLLS-ROYCE plc · 2014
- Constant-speed twin spool turboprop unit59US 6,082,967 ASociete Nationale d'Etude et de Construction de Moteurs D'Aviation "S.N.E.C.M A." · 2000