F05D 2270/02
To control rotational speed
Official title: to control rotational speed (n)
F05D2270/02 (To control rotational speed) appears on 569 US grants and 606 published applications in this corpus.
Search patents in F05D- Granted patents
- 569
- Published applications
- 606
- Assignees
- 191
- Inventors
- 1,168
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 1 |
| 2002 | 3 | 4 |
| 2003 | 6 | 8 |
| 2004 | 8 | 10 |
| 2005 | 7 | 6 |
| 2006 | 11 | 8 |
| 2007 | 5 | 15 |
| 2008 | 10 | 10 |
| 2009 | 4 | 5 |
| 2010 | 8 | 14 |
| 2011 | 4 | 9 |
| 2012 | 10 | 12 |
| 2013 | 14 | 20 |
| 2014 | 7 | 18 |
| 2015 | 7 | 17 |
| 2016 | 17 | 32 |
| 2017 | 15 | 65 |
| 2018 | 28 | 43 |
| 2019 | 46 | 41 |
| 2020 | 47 | 64 |
| 2021 | 50 | 59 |
| 2022 | 48 | 56 |
| 2023 | 62 | 33 |
| 2024 | 47 | 23 |
| 2025 | 29 | 13 |
| 2026 | 12 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for overspeed detection and protection in an engine15 Sep 2026US 12,735,993 B2General Electric Company
- Method for controlling an air-cooled compressor or vacuum pump device and an air-cooled compressor or vacuum pump device4 Aug 2026US 12,698,774 B2Atlas Copco Airpower, Naamloze Vennootschap
- Control system and method for powering a low inertia generator with a gas turbine engine and maintaining speed governing tolerance21 Jul 2026US 12,687,132 B1Pratt & Whitney Canada Corp.
- Control system for a turbogenerator and method14 Jul 2026US 12,680,512 B2Rolls-Royce Deutschland Ltd & Co KG
- Uncontrollable high thrust (UHT) protection for hybrid-electric aircraft propulsion systems14 Jul 2026US 12,680,513 B2Pratt & Whitney Canada Corp.
- Gas turbine propulsion system with variable pitch fan and method for operating the system8 Oct 2026US 2026/0309094 A1Rtx Corporation
- Two-speed epicyclic gearbox with clutch for aircraft propulsion system24 Sep 2026US 2026/0286902 A1Pratt & Whitney Canada Corp.
- Engine control device, power supply system, moving object, engine control method, and storage medium10 Sep 2026US 2026/0266226 A1Honda Motor Co., Ltd.
- Aircraft propulsion system with turbine engine coupled to an electric generator the power of which is limited as a function of engine speed3 Sep 2026US 2026/0258734 A1Safran Aircraft Engines
- The sequence in which safety functions are activated in propeller governors or controllers to mitigate undesirable effects occurring during flight27 Aug 2026US 2026/0249979 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Multi-compatible digital engine controller179US 9,429,078 B1Tucson Embedded Systems, Inc. · 2016
- Gas turbine engine overspeed prevention178US 9,689,316 B1Tucson Embedded Systems, Inc. · 2017
- Controller assembly for simultaneously managing multiple engine/pump assemblies to perform shared work171US 10,415,557 B1Tucson Embedded Systems, Inc. · 2019
- Pump-engine controller169US 9,869,305 B1Tucson Embedded Systems, Inc. · 2018
- Multi-compatible digital engine controller169US 9,879,609 B1Tucson Embedded Systems, Inc. · 2018