F05D 2240/58
Piston ring seals
F05D2240/58 (Piston ring seals) appears on 117 US grants and 136 published applications in this corpus.
Search patents in F05D- Granted patents
- 117
- Published applications
- 136
- Assignees
- 35
- Inventors
- 285
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 3 |
| 2014 | 1 | 4 |
| 2015 | 2 | 8 |
| 2016 | 3 | 10 |
| 2017 | 8 | 7 |
| 2018 | 10 | 9 |
| 2019 | 9 | 10 |
| 2020 | 12 | 11 |
| 2021 | 10 | 14 |
| 2022 | 13 | 15 |
| 2023 | 16 | 8 |
| 2024 | 10 | 11 |
| 2025 | 16 | 14 |
| 2026 | 7 | 7 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sealing ring25 Aug 2026US 12,716,361 B2Industria De Turbo Propulsores, S.A.U.
- Center tie rotor seal26 May 2026US 12,637,953 B1Rtx Corporation
- Piston seal ring bypass31 Mar 2026US 12,590,634 B2Rtx Corporation
- Gas turbine engine with carbon/carbon composite piston seal27 Jan 2026US 12,535,013 B2Rtx Corporation
- Flame protection seals for gas turbine engines13 Jan 2026US 12,523,175 B1Pratt & Whitney Canada Corp.
- Turbine vane frame assembly10 Sep 2026US 2026/0266201 A1General Electric Company
- Method for reducing adhesive damage due to loss of lubrication in aerospace piston rings23 Jul 2026US 2026/0210257 A1Rtx Corporation
- Piston Seal Ring Bypass9 Jul 2026US 2026/0194140 A1Rtx Corporation
- Mid-turbine frame damping system for a gas turbine engine2 Jul 2026US 2026/0185460 A1Rtx Corporation
- Carbon Radial Seal4 Jun 2026US 2026/0153056 A1Rtx Corporation
Most cited
By later US patents
- Gas turbine engine seal carrier30US 9,255,487 B2United Technologies Corporation · 2016
- Seal assembly for a static structure of a gas turbine engine10US 10,087,847 B2United Technologies Corporation · 2018
- Gas turbine engine impeller system for an intermediate pressure (IP) compressor10US 9,683,488 B2Rolls-Royce North American Technologies Inc. · 2017
- Method and system for modulated turbine cooling9US 10,113,486 B2General Electric Company · 2018
- Gas turbine9US 9,188,062 B2Mitsubishi Hitachi Power Systems, Ltd. · 2015