Circuit breaker
US-12500055-B2 · Dec 16, 2025 · US
Interlocking mechanisms
Interlocking mechanisms · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/46 |
| Official title | Interlocking mechanisms |
| Display label | Interlocking mechanisms |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Switchgear with manual trip assembly and mechanical interlock
US-2025232933-A1 · Jul 17, 2025 · US
Switchgear with manual trip assembly and mechanical interlock
US-12266488-B2 · Apr 1, 2025 · US
Plug interlock apparatus for vacuum circuit breaker
US-12176164-B2 · Dec 24, 2024 · US
Assembly for engaging an electromagnetic actuator
US-12154741-B2 · Nov 26, 2024 · US
Circuit breaker
US-2024331962-A1 · Oct 3, 2024 · US
Method of mounting an interlock module between two contactors and an interlock module
US-11929228-B2 · Mar 12, 2024 · US
Assembly for engaging an electromagnetic actuator
US-2023282433-A1 · Sep 7, 2023 · US
Mechanical latching system kit for a medium voltage contactor
US-11640887-B2 · May 2, 2023 · US
Plug interlock apparatus for vacuum circuit breaker
US-2023065103-A1 · Mar 2, 2023 · US
Method of mounting an interlock module between two contactors and an interlock module
US-2022384124-A1 · Dec 1, 2022 · US
Retracting and extending apparatus for circuit breaker with interlock module
US-11476646-B2 · Oct 18, 2022 · US
Hybrid switching apparatus of the withdrawable type
US-11476061-B2 · Oct 18, 2022 · US
Switchgear with manual trip assembly and mechanical interlock
US-2022238288-A1 · Jul 28, 2022 · US
Hybrid switching apparatus of the withdrawable type
US-2022037097-A1 · Feb 3, 2022 · US
Circuit breaker
US-11189994-B2 · Nov 30, 2021 · US
Electrical switch
US-11101086-B2 · Aug 24, 2021 · US
Electrical Switch
US-2020227220-A1 · Jul 16, 2020 · US
Retracting and extending apparatus for circuit breaker with interlock module
US-2020212658-A1 · Jul 2, 2020 · US
Circuit breaker
US-2020212659-A1 · Jul 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H33/46?
- CPC H01H33/46 is the Cooperative Patent Classification code for “Interlocking mechanisms.”
- How many patents are filed under CPC H01H33/46 (Interlocking mechanisms)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC H01H33/46 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).