Cooling fan device
US-12330476-B2 · Jun 17, 2025 · US
comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026)
comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026) · 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 | F04D25/022 |
| Official title | {comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026)} |
| Display label | comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026) |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 5 |
| 2017 | 12 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Working machine
US-2025121527-A1 · Apr 17, 2025 · US
Rotor assembly and fluid transmission device having the same
US-12221968-B1 · Feb 11, 2025 · US
Cooling fan device
US-2024025230-A1 · Jan 25, 2024 · US
Controller of fan coupling device
US-11635085-B2 · Apr 25, 2023 · US
Viscous coupling
US-11619273-B1 · Apr 4, 2023 · US
Controller of fan coupling device
US-11434808-B2 · Sep 6, 2022 · US
Blocking device of a fan
US-11391285-B2 · Jul 19, 2022 · US
Controller of fan coupling device
US-2021332825-A1 · Oct 28, 2021 · US
Controller of fan coupling device
US-2021332738-A1 · Oct 28, 2021 · US
System and method involving a variable speed cooling fan used with a compressor and an internal combustion engine
US-11002175-B2 · May 11, 2021 · US
System and method for a variable speed cooling fan on a skid mounted compressor
US-10927746-B2 · Feb 23, 2021 · US
Blocking device of a fan
US-2021018007-A1 · Jan 21, 2021 · US
System and Method For a Variable Speed Cooling Fan on a Skid Mounted Compressor
US-2020173340-A1 · Jun 4, 2020 · US
Clutch mechanism and method for controlling fan speed
US-10634197-B2 · Apr 28, 2020 · US
Fan systems including brushes and bristles for self-cleaning
US-2019301493-A1 · Oct 3, 2019 · US
Fan, motor driving assembly and load connecting mechanism thereof
US-10359080-B2 · Jul 23, 2019 · US
Motorcycle supercharger
US-10190454-B2 · Jan 29, 2019 · US
System and Method Involving a Variable Speed Cooling Fan Used With a Compressor and an Internal Combustion Engine
US-2018371981-A1 · Dec 27, 2018 · US
Fluid driving device, motor assembly and centrifugal friction clutch thereof
US-10145427-B2 · Dec 4, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D25/022?
- CPC F04D25/022 is the Cooperative Patent Classification code for “comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026).”
- How many patents are filed under CPC F04D25/022 (comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026))?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC F04D25/022 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).