Connection system
US-12421999-B2 · Sep 23, 2025 · US
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the clamped shaft being hollow
the clamped shaft being hollow · 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 | F16D2001/0903 |
| Official title | {the clamped shaft being hollow} |
| Display label | the clamped shaft being hollow |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Torque tube coupler
US-2025237268-A1 · Jul 24, 2025 · US
Torque tube coupler
US-12331789-B2 · Jun 17, 2025 · US
Torque limiting coupling
US-2024328462-A1 · Oct 3, 2024 · US
Torque tube coupler
US-2024200589-A1 · Jun 20, 2024 · US
Torque tube coupler
US-11946506-B2 · Apr 2, 2024 · US
Connection system
US-2023358258-A1 · Nov 9, 2023 · US
Torque tube coupler
US-2023213050-A1 · Jul 6, 2023 · US
Torque tube coupler
US-11592046-B2 · Feb 28, 2023 · US
Hybrid metallic/composite joint with separate internal bearing
US-11512738-B2 · Nov 29, 2022 · US
Wind turbine main shaft assembly
US-2022252048-A1 · Aug 11, 2022 · US
Torque tube coupler
US-2022082119-A1 · Mar 17, 2022 · US
Coupling assembly and wind turbine comprising such assembly
US-10989250-B2 · Apr 27, 2021 · US
Hybrid metallic/composite joint with separate internal bearing
US-2020325932-A1 · Oct 15, 2020 · US
Coupling assembly and wind turbine comprising such assembly
US-2019203774-A1 · Jul 4, 2019 · US
Rotor assembly
US-9353626-B2 · May 31, 2016 · US
Overload coupling
US-2016091029-A1 · Mar 31, 2016 · US
Fixation arrangement as well as an interchangeable part and a lock key
US-2015330434-A1 · Nov 19, 2015 · US