Mechanical assembly for the transmission of axial forces between at least two rotor parts of a turbomachine and method for producing a variable threading for such an assembly
US-2021262347-A1 · Aug 26, 2021 · US
threaded
threaded · 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 | F05D2250/281 |
| Official title | threaded |
| Display label | threaded |
| Total patents | 72 |
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 | 7 |
| 2016 | 14 |
| 2017 | 8 |
| 2018 | 10 |
| 2019 | 11 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Airfoil shroud assembly using tenon with externally threaded stud and nut
US-11028709-B2 · Jun 8, 2021 · US
Rotary machine with cooling jacket including helical groove
US-2021115925-A1 · Apr 22, 2021 · US
Locking spacer assembly, corresponding blade assembly, method for installing a locking spacer
US-2021003021-A1 · Jan 7, 2021 · US
Case coupling and assembly
US-10801367-B2 · Oct 13, 2020 · US
Fluid transfer assembly for rotational equipment
US-2020256213-A1 · Aug 13, 2020 · US
Airfoil shroud assembly using tenon with externally threaded stud and nut
US-2020088049-A1 · Mar 19, 2020 · US
Closing assembly for closing a blade ring, associated blade supports, turbomachine, and method for inserting a closing assembly
US-10570756-B2 · Feb 25, 2020 · US
Retention of a rotor of an electronically-controlled turbomachine
US-2020032653-A1 · Jan 30, 2020 · US
Method for repairing a generator rotor blade connection
US-10527056-B2 · Jan 7, 2020 · US
Turbine case coupling
US-10519805-B2 · Dec 31, 2019 · US
Segregated impeller shroud for clearance control in a centrifugal compressor
US-2019353180-A1 · Nov 21, 2019 · US
Threaded connection for tandem motors of electrical submersible pump
US-10458415-B2 · Oct 29, 2019 · US
Injector fittings
US-10436448-B2 · Oct 8, 2019 · US
Segregated impeller shroud for clearance control in a centrifugal compressor
US-10408226-B2 · Sep 10, 2019 · US
Moment accommodating fastener assembly
US-10392969-B2 · Aug 27, 2019 · US
Turbocharger shaft seal
US-10378449-B2 · Aug 13, 2019 · US
High efficiency centrifugal impeller
US-2019234216-A1 · Aug 1, 2019 · US
Turbine engine bearing assembly and method for assembling the same
US-10274016-B2 · Apr 30, 2019 · US
Pedestals with heat transfer augmenter
US-10247099-B2 · Apr 2, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F05D2250/281?
- CPC F05D2250/281 is the Cooperative Patent Classification code for “threaded.”
- How many patents are filed under CPC F05D2250/281 (threaded)?
- Our database includes 72 publications tagged with this CPC code.
- Is patent activity under CPC F05D2250/281 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).