Smooth-starting electrical submersible pumps
US-2026002428-A1 · Jan 1, 2026 · US
a coupling allowing slip, e.g. torque converter
a coupling allowing slip, e.g. torque converter · 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 | F04D13/022 |
| Official title | {a coupling allowing slip, e.g. torque converter} |
| Display label | a coupling allowing slip, e.g. torque converter |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device for changing a pump unit of a centrifugal pump and centrifugal pump
US-12486848-B2 · Dec 2, 2025 · US
Integrated bearing systems for dynamically supporting shafts in pump systems
US-12460647-B2 · Nov 4, 2025 · US
One way clutch train for arresting backspin
US-12345139-B2 · Jul 1, 2025 · US
Device for changing a pump unit of a centrifugal pump and centrifugal pump
US-2025180025-A1 · Jun 5, 2025 · US
Device for changing a pump unit of a centrifugal pump and centrifugal pump
US-2025180039-A1 · Jun 5, 2025 · US
Fluid infusing system driven by dryer drum
US-12252835-B2 · Mar 18, 2025 · US
Pump
US-11873821-B2 · Jan 16, 2024 · US
One way clutch train for arresting backspin
US-2023383632-A1 · Nov 30, 2023 · US
Integrated bearing systems for dynamically supporting shafts in pump systems
US-2023358247-A1 · Nov 9, 2023 · US
Shear pin and drive shaft spring brake in electrical submersible pump
US-11795962-B2 · Oct 24, 2023 · US
Motor drive shaft spring clutch in electrical submersible pump
US-11608721-B2 · Mar 21, 2023 · US
Water pump
US-11598346-B2 · Mar 7, 2023 · US
Fluid infusing system driven by dryer drum
US-2023002954-A1 · Jan 5, 2023 · US
Pump
US-2022170476-A1 · Jun 2, 2022 · US
One-way clutch drive shaft coupling in submersible well pump assembly
US-11225972-B2 · Jan 18, 2022 · US
Device for driving a fuel pump for a turbomachine
US-11220959-B2 · Jan 11, 2022 · US
Motor Drive Shaft Spring Clutch In Electrical Submersible Pump
US-2021348488-A1 · Nov 11, 2021 · US
Shear Pin And Drive Shaft Spring Brake In Electrical Submersible Pump
US-2021324867-A1 · Oct 21, 2021 · US
Viscous coupling for a coolant pump
US-11073182-B2 · Jul 27, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D13/022?
- CPC F04D13/022 is the Cooperative Patent Classification code for “a coupling allowing slip, e.g. torque converter.”
- How many patents are filed under CPC F04D13/022 (a coupling allowing slip, e.g. torque converter)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC F04D13/022 growing?
- Publication counts under this code: 1 in 2024 vs 6 in 2025 (latest complete years).