Gas turbine engine shaft break mitigation
US-11428117-B2 · Aug 30, 2022 · US
Restoring position
Restoring position · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F01D21/08 |
| Official title | Restoring position |
| Display label | Restoring position |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 10 |
| 2019 | 17 |
| 2020 | 11 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and device for connecting fan rotor to low pressure turbine rotor
US-11261753-B2 · Mar 1, 2022 · US
Seal assembly with secondary retention feature
US-11174795-B2 · Nov 16, 2021 · US
Abnormality treatment apparatus for rotating machine, and rotating machine system
US-11060902-B2 · Jul 13, 2021 · US
Aircraft engine comprising a bearing between two concentric shafts
US-11021992-B2 · Jun 1, 2021 · US
Seal assembly with secondary retention feature
US-2021156311-A1 · May 27, 2021 · US
Support system having shape memory alloys
US-10968775-B2 · Apr 6, 2021 · US
Aircraft turbomachine with reduction gearset
US-2021087977-A1 · Mar 25, 2021 · US
Self centering unison ring
US-10801362-B2 · Oct 13, 2020 · US
System and method for rotor bow mitigation
US-10781754-B2 · Sep 22, 2020 · US
Gas turbine engine shaft break mitigation
US-2020248581-A1 · Aug 6, 2020 · US
Aircraft turbomachine assembly having an improved decoupling system in the event of a fan blade loss
US-10690004-B2 · Jun 23, 2020 · US
Mitigation of effects of fan blade off in a gas turbine engine
US-10677089-B2 · Jun 9, 2020 · US
Rotor support system having a shape memory alloy
US-10634007-B2 · Apr 28, 2020 · US
Aircraft engine comprising a bearing between two concentric shafts
US-2020109642-A1 · Apr 9, 2020 · US
Seal panel for a gas turbine engine
US-10590801-B2 · Mar 17, 2020 · US
Load reduction assemblies for a gas turbine engine
US-10584751-B2 · Mar 10, 2020 · US
Damping Device for Damping Shaft Vibration
US-2020056677-A1 · Feb 20, 2020 · US
Rotor of a fluid flow machine
US-2020011183-A1 · Jan 9, 2020 · US
Abnormality treatment apparatus for rotating machine, and rotating machine system
US-2019391005-A1 · Dec 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D21/08?
- CPC F01D21/08 is the Cooperative Patent Classification code for “Restoring position.”
- How many patents are filed under CPC F01D21/08 (Restoring position)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC F01D21/08 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).