F01D 21/02
Shutting-down responsive to overspeed
F01D21/02 (Shutting-down responsive to overspeed) appears on 185 US grants and 180 published applications in this corpus.
Search patents in F01D- Granted patents
- 185
- Published applications
- 180
- Assignees
- 79
- Inventors
- 440
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 5 |
| 2008 | 2 | 4 |
| 2009 | 1 | 5 |
| 2010 | 3 | 6 |
| 2011 | 4 | 6 |
| 2012 | 9 | 5 |
| 2013 | 5 | 8 |
| 2014 | 5 | 5 |
| 2015 | 5 | 8 |
| 2016 | 3 | 12 |
| 2017 | 3 | 9 |
| 2018 | 8 | 20 |
| 2019 | 16 | 9 |
| 2020 | 16 | 12 |
| 2021 | 8 | 15 |
| 2022 | 17 | 15 |
| 2023 | 16 | 9 |
| 2024 | 11 | 12 |
| 2025 | 11 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Braking control assembly for an aircraft gas turbine engine and method of using same29 Sep 2026US 12,749,993 B2Pratt & Whitney Canada Corp.
- System and method for overspeed detection and protection in an engine15 Sep 2026US 12,735,993 B2General Electric Company
- Deep peak-shaving and efficient operation control system and method for thermal power unit with variable turbine speed19 May 2026US 12,631,123 B2Zhejiang Baima Lake Laboratory Co., Ltd.
- Turbine overspeed protection2 Dec 2025US 12,486,784 B2ROLLS-ROYCE plc
- Coupling optical fibers and cooling fluid passages2 Dec 2025US 12,487,425 B2Rtx Corporation
- Dual speed or position probe-based shaft shear detection23 Jul 2026US 2026/0210300 A1Pratt & Whitney Canada Corp.
- Geared turbofan with overspeed protection2 Jul 2026US 2026/0185459 A1Rtx Corporation
- Method and module for detecting the state of a coupling device, and associated turbine engine and aircraft23 Apr 2026US 2026/0109470 A1Safran Aircraft Engines
- Turbine engine having a fan speed sensor system16 Apr 2026US 2026/0103995 A1General Electric Company
- Geared turbofan with overspeed protection13 Nov 2025US 2025/0347231 A1Rtx Corporation
Most cited
By later US patents
- Systems and methods involving multiple torque paths for gas turbine engines63US 8,621,871 B2United Technologies Corporation · 2014
- Dual turbogenerator auxiliary power system58US 5,799,484 AAllied-Signal Inc. · 1998
- Method of effecting fast turbine valving for improvement of power system stability41US 3,998,058 AFast Load Control Inc. · 1976
- Overspeed system redundancy monitor38US 4,712,372 AAvco Corporation · 1987
- Fuel controls for gas turbine engines38US 4,716,723 AWoodward Governor Company · 1988