F01D 21/08
Restoring position
F01D21/08 (Restoring position) appears on 46 US grants and 50 published applications in this corpus.
Search patents in F01D- Granted patents
- 46
- Published applications
- 50
- Assignees
- 18
- Inventors
- 116
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 4 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 3 | 3 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 1 | 4 |
| 2017 | 2 | 3 |
| 2018 | 3 | 6 |
| 2019 | 7 | 11 |
| 2020 | 8 | 4 |
| 2021 | 4 | 2 |
| 2022 | 4 | 3 |
| 2023 | 1 | 1 |
| 2024 | 3 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aircraft engine rotor assembly with gyroscopic stiffener29 Apr 2025US 12,286,894 B1Pratt & Whitney Canada Corp.
- Method for controlling the bending deformation of a turbomachine shaft at rest subjected to the residual heat of operation of the turbomachine2 Apr 2024US 11,946,385 B2Safran Aircraft Engines
- Damping device for damping shaft vibration26 Mar 2024US 11,940,032 B2General Electric Company
- Flexible frustoconical input shaft23 Jan 2024US 11,879,398 B2Safran Aircraft Engines
- System for the axial retention of a rolling element bearing21 Feb 2023US 11,585,237 B2Safran Aircraft Engines
- Active tip clearance control system for aircraft engine27 Aug 2026US 2026/0251072 A1Pratt & Whitney Canada Corp.
- Flexible frustoconical input shaft23 Feb 2023US 2023/0057973 A1Safran Aircraft Engines
- Method for controlling the bending deformation of a turbomachine shaft at rest subjected to the residual heat of operation of the turbomachine31 Mar 2022US 2022/0098997 A1Safran Aircraft Engines
- Seal assembly with secondary retention feature17 Feb 2022US 2022/0049659 A1Raytheon Technologies Corporation
- System for the axial retention of a ring of a rolling element bearing3 Feb 2022US 2022/0034237 A1Safran Aircraft Engines
Most cited
By later US patents
- Mid turbine frame system for gas turbine engine132US 8,061,969 B2Pratt & Whitney Canada Corp. · 2011
- Method and system for controlling distortion of turbine case due to thermal variations99US 6,691,019 B2General Electric Company · 2004
- Mid turbine frame system for gas turbine engine67US 8,245,518 B2Pratt & Whitney Canada Corp. · 2012
- Gas turbine and method of operating a gas turbine48US 9,121,309 B2MTU Aero Engines AG · 2015
- Bearing support40US 7,097,413 B2United Technologies Corporation · 2006