Alternating Current Disconnector for Subsea Operation
US-2026088234-A1 · Mar 26, 2026 · US
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hydraulic
hydraulic · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/34 |
| Official title | hydraulic |
| Display label | hydraulic |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Actuating mechanism for operating a circuit breaker
US-12424400-B2 · Sep 23, 2025 · US
Actuating mechanism for operating a circuit breaker
US-2023411090-A1 · Dec 21, 2023 · US
Accumulator module for hydromechanical spring-loaded drive
US-11286959-B2 · Mar 29, 2022 · US
Anomaly diagnosis device and anomaly diagnosis method for oil-hydraulic operating mechanism
US-11038339-B2 · Jun 15, 2021 · US
Compact pole unit for fast switches and circuit breakers
US-10923298-B1 · Feb 16, 2021 · US
Two-stage valve arrangement for hydraulic control of a piston- cylinder arrangement of a high- or medium-voltage power switch
US-10830256-B2 · Nov 10, 2020 · US
Anomaly diagnosis device and anomaly diagnosis method for oil-hydraulic operating mechanism
US-2020321771-A1 · Oct 8, 2020 · US
Hydraulic drive for a switchgear
US-10229799-B2 · Mar 12, 2019 · US
Two-Stage Valve Arrangement for Hydraulic Control of a Piston-Cylinder Arrangement of a High- or Medium-Voltage Power Switch
US-2019017521-A1 · Jan 17, 2019 · US
Accumulator Module for Hydromechanical Spring-Loaded Drive
US-2018372125-A1 · Dec 27, 2018 · US
Differential cylinder for a hydromechanical drive for electrical circuit breakers
US-9920777-B2 · Mar 20, 2018 · US
Switchgear driving device
US-2018025867-A1 · Jan 25, 2018 · US
Working cylinder for a drive of an electric circuit breaker
US-9837222-B2 · Dec 5, 2017 · US
Locking apparatus for a hydromechanical spring energy store drive for a gas-insulated switchgear assembly
US-9791044-B2 · Oct 17, 2017 · US
Differential cylinder for a hydromechanical drive for electrical circuit breakers
US-9714645-B2 · Jul 25, 2017 · US
Electrical switching device, which switches stroke-dependently, with extended switching hysteresis
US-9704660-B2 · Jul 11, 2017 · US
Storage module for a hydraulic stored-energy spring mechanism
US-9620302-B2 · Apr 11, 2017 · US
Hydraulic valve for preventing leakage in an actuator for activating a high- or medium-voltage circuit breaker
US-9506573-B2 · Nov 29, 2016 · US
Spring-operated mechanism having delay circuit
US-9373455-B2 · Jun 21, 2016 · US