Rotary connector
US-12470030-B2 · Nov 11, 2025 · US
using bearing or shaft surface as contact surface
using bearing or shaft surface as contact surface · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01R39/12 |
| Official title | using bearing or shaft surface as contact surface |
| Display label | using bearing or shaft surface as contact surface |
| Total patents | 63 |
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 | 4 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 8 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 11 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Anti-erosion structure of motor including a ground structure
US-12374953-B2 · Jul 29, 2025 · US
Systems and methods to mitigate electrical voltage on a rotating shaft immersed in oil
US-2025233493-A1 · Jul 17, 2025 · US
Connection device
US-2025219339-A1 · Jul 3, 2025 · US
Arrangement for producing an electrically conductive connection between a first machine element and a second machine element
US-12334669-B2 · Jun 17, 2025 · US
Electric motor fan cover, end bell interface, and radially mounted brush holder
US-12294253-B2 · May 6, 2025 · US
Systems and methods to mitigate electrical voltage on a rotating shaft immersed in oil
US-12231007-B2 · Feb 18, 2025 · US
Discharge device for discharging electrical currents and machine comprising such a discharge device
US-2024339896-A1 · Oct 10, 2024 · US
Shaft-Grounding Device for Establishing an Electrically Conductive Connection Between a Rotatable Shaft and a Housing
US-2024275113-A1 · Aug 15, 2024 · US
Shaft Grounding Ring and Method for Production Thereof
US-2024223051-A1 · Jul 4, 2024 · US
Slip ring assembly for surgical instrument
US-11998202-B2 · Jun 4, 2024 · US
Electric Motor Fan Cover, End Bell Interface, and Radially Mounted Brush Holder
US-2024162792-A1 · May 16, 2024 · US
Rotary electric machine and drive device
US-11863043-B2 · Jan 2, 2024 · US
Anti-erosion structure of motor
US-2023402897-A1 · Dec 14, 2023 · US
Arcuate electrically conductive assembly for bearings
US-11773908-B1 · Oct 3, 2023 · US
Pan tilt unit
US-11732836-B2 · Aug 22, 2023 · US
Transmission for a motor vehicle, and electric axle drive
US-11635133-B2 · Apr 25, 2023 · US
Slip ring assembly for surgical instrument
US-2023059154-A1 · Feb 23, 2023 · US
Arrangement for producing an electrically conductive connection between a first machine element and a second machine element
US-2022384986-A1 · Dec 1, 2022 · US
Contact ring and contact system
US-11515680-B2 · Nov 29, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01R39/12?
- CPC H01R39/12 is the Cooperative Patent Classification code for “using bearing or shaft surface as contact surface.”
- How many patents are filed under CPC H01R39/12 (using bearing or shaft surface as contact surface)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC H01R39/12 growing?
- Publication counts under this code: 6 in 2024 vs 9 in 2025 (latest complete years).