F05D 2270/094
By using back-up controls
Official title: by using back-up controls
F05D2270/094 (By using back-up controls) appears on 56 US grants and 50 published applications in this corpus.
Search patents in F05D- Granted patents
- 56
- Published applications
- 50
- Assignees
- 36
- Inventors
- 107
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 4 |
| 2008 | 0 | 3 |
| 2009 | 4 | 0 |
| 2010 | 2 | 0 |
| 2011 | 1 | 7 |
| 2012 | 1 | 2 |
| 2013 | 3 | 0 |
| 2014 | 2 | 1 |
| 2015 | 2 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 4 |
| 2018 | 2 | 2 |
| 2019 | 4 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 5 | 3 |
| 2023 | 1 | 2 |
| 2024 | 1 | 3 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for blocking the shut-off of a propulsion engine for aircraft13 Jan 2026US 12,523,181 B2Airbus Operations GmbH
- Accommodation for mismatch in guide vane feedback via undesired engine behavior6 Jan 2026US 12,516,636 B1Pratt & Whitney Canada Corp.
- Method for regulating the speed of rotation of a propulsion device of a hybrid propulsion unit for an aircraft, in the event of a failure of the main regulation system of the heat engine of the hybrid propulsion unit4 Nov 2025US 12,460,587 B2Safran Helicopter Engines
- Hydrogen fuel leak detection system4 Mar 2025US 12,241,424 B2General Electric Company
- Steam turbine valve abnormality monitoring system, steam turbine valve drive device, steam turbine valve device, and steam turbine plant19 Mar 2024US 11,933,183 B2Kabushiki Kaisha Toshiba
- Method for regulating the speed of rotation of a propulsion device of a hybrid propulsion unit for an aircraft, in the event of a failure of the main regulation system of the heat engine of the hybrid propulsion unit6 Feb 2025US 2025/0042563 A1Safran Helicopter Engines
- Aircraft powerplant with multiple independent fuel systems26 Dec 2024US 2024/0426253 A1Pratt & Whitney Canada Corp.
- Aircraft anti-icing system1 Aug 2024US 2024/0254894 A1Rohr, Inc.
- Device for blocking the shut-off of a propulsion engine for aircraft1 Aug 2024US 2024/0254929 A1Airbus Operations GmbH
- Redundant electrically driven fuel and oil pumping system for gas turbines9 Mar 2023US 2023/0072590 A1Rolls-Royce North American Technologies Inc.
Most cited
By later US patents
- Failsafe electronic control systems84US 4,718,229 AROLLS-ROYCE plc · 1988
- Gas turbine engine control system having integral flight Mach number synthesis method35US 5,394,689 AGeneral Electric Company · 1995
- Back-up control system for F101 engine and its derivatives27US 4,794,755 AThe United States of America as represented by the Secretary of the Air Force · 1989
- Gas turbine aeroengine control system26US 6,393,355 B1Honda Giken Kogyo Kabushiki Kaisha · 2002
- Air driven turbine having a blade pitch changing mechanism including overspeed protection25US 5,685,694 ASundstrand Corporation · 1997