F01D 11/22
By mechanically actuating the stator or rotor components
Official title: by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor
F01D11/22 (By mechanically actuating the stator or rotor components) appears on 262 US grants and 253 published applications in this corpus.
Search patents in F01D- Granted patents
- 262
- Published applications
- 253
- Assignees
- 65
- Inventors
- 495
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 5 |
| 2003 | 2 | 3 |
| 2004 | 5 | 1 |
| 2005 | 0 | 5 |
| 2006 | 4 | 5 |
| 2007 | 1 | 4 |
| 2008 | 4 | 8 |
| 2009 | 4 | 8 |
| 2010 | 6 | 11 |
| 2011 | 4 | 9 |
| 2012 | 6 | 6 |
| 2013 | 9 | 13 |
| 2014 | 9 | 10 |
| 2015 | 10 | 17 |
| 2016 | 13 | 29 |
| 2017 | 12 | 17 |
| 2018 | 15 | 11 |
| 2019 | 27 | 14 |
| 2020 | 17 | 19 |
| 2021 | 19 | 10 |
| 2022 | 18 | 11 |
| 2023 | 8 | 6 |
| 2024 | 12 | 16 |
| 2025 | 14 | 11 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Turbine engine tip clearance control utilizing electric machine23 Jun 2026US 12,662,946 B2Rtx Corporation
- Variable flowpath casings for blade tip clearance control5 May 2026US 12,618,333 B2General Electric Company
- Seal support assembly for a turbine engine7 Apr 2026US 12,595,745 B2General Electric Company
- Blade tip clearance control using material with negative thermal expansion coefficients17 Mar 2026US 12,577,883 B2General Electric Company
- Rapid active clearance control system of inter stage and mid-seals17 Mar 2026US 12,577,884 B2General Electric Company
- Turbine engine tip clearance control utilizing electric machine8 Oct 2026US 2026/0309046 A1Rtx Corporation
- Variable flowpath casings for blade tip clearance control10 Sep 2026US 2026/0266194 A1General Electric Company
- Rapid active clearance control system of inter stage and mid-seals2 Jul 2026US 2026/0185456 A1General Electric Company
- Control Logic for Thrust Link Whiffle-Tree Hinge Positioning for Improved Clearances12 Mar 2026US 2026/0073240 A1General Electric Company
- Seal support assembly for a turbine engine20 Nov 2025US 2025/0354499 A1General Electric Company
Most cited
By later US patents
- Tip clearance control apparatus for a turbo-machine blade80US 5,203,673 AWestinghouse Electric Corp. · 1993
- Gas turbine engine clearance control apparatus73US 5,228,828 AGeneral Electric Company · 1993
- Blade clearance control for turbomachinery69US 6,273,671 B1Allison Advanced Development Company · 2001
- Blade tip clearance control apparatus for a gas turbine engine59US 5,104,287 AGeneral Electric Company · 1992
- Rotor tip clearance control apparatus for a gas turbine engine58US 4,330,234 AROLLS-ROYCE plc · 1982