Friction clutch of a multispeed transmission and electric drive of a vehicle
US-2025129823-A1 · Apr 24, 2025 · US
with friction surfaces arranged externally to the flux
with friction surfaces arranged externally to the flux · 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 | F16D27/08 |
| Official title | with friction surfaces arranged externally to the flux |
| Display label | with friction surfaces arranged externally to the flux |
| Total patents | 28 |
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 | 3 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electromagnetic clutch and method of closing and opening an electromagnetic clutch
US-2024352979-A1 · Oct 24, 2024 · US
Synchronized electromagnetic single plate clutch system
US-11480221-B2 · Oct 25, 2022 · US
Synchronized electromagnetic single plate clutch system
US-2022018401-A1 · Jan 20, 2022 · US
Synchronized electromagnetic single plate clutch system
US-11137035-B2 · Oct 5, 2021 · US
Synchronized electromagnetic single plate clutch system
US-2021277961-A1 · Sep 9, 2021 · US
Two-speed accessory drive pulley
US-10830126-B2 · Nov 10, 2020 · US
Electromagnetic clutch of a brushless control-by-wire centrifugal ball arm engagement device
US-10830289-B2 · Nov 10, 2020 · US
Two-speed accessory drive pulley
US-2020003113-A1 · Jan 2, 2020 · US
An electromagnetic clutch of a brushless control-by-wire centrifugal ball arm engagement device
US-2019390720-A1 · Dec 26, 2019 · US
Clutch system
US-10458491-B2 · Oct 29, 2019 · US
Rotation transmission device
US-10151357-B2 · Dec 11, 2018 · US
Rotating shaft device
US-2018328416-A1 · Nov 15, 2018 · US
Device for activating a low-friction clutch
US-10107340-B1 · Oct 23, 2018 · US
Device for activating a low-friction clutch
US-2018291968-A1 · Oct 11, 2018 · US
Electromagnetic clutch
US-9982725-B2 · May 29, 2018 · US
Clutch system
US-2018135707-A1 · May 17, 2018 · US
Electromagnetic clutch
US-2017241489-A1 · Aug 24, 2017 · US
Friction clutch assembly
US-9651097-B2 · May 16, 2017 · US
Clutch device
US-9541138-B2 · Jan 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16D27/08?
- CPC F16D27/08 is the Cooperative Patent Classification code for “with friction surfaces arranged externally to the flux.”
- How many patents are filed under CPC F16D27/08 (with friction surfaces arranged externally to the flux)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC F16D27/08 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).