Transformer comprising a load break rotary switch
US-11881372-B2 · Jan 23, 2024 · US
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Liquid-break switches, e.g. oil-break
Liquid-break switches, e.g. oil-break · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/68 |
| Official title | Liquid-break switches, e.g. oil-break |
| Display label | Liquid-break switches, e.g. oil-break |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Arc extinguishing systems
US-11837420-B2 · Dec 5, 2023 · US
Transformer comprising a load break rotary switch
US-2023352251-A1 · Nov 2, 2023 · US
Liquid arc extinguish chamber for direct current breaking, direct current breaker and method thereof
US-11443909-B2 · Sep 13, 2022 · US
Arc extinguishing systems
US-2022181106-A1 · Jun 9, 2022 · US
Liquid arc extinguish chamber for direct current breaking, direct current breaker and method thereof
US-2020343063-A1 · Oct 29, 2020 · US
Quickly closing switch element
US-10388475-B2 · Aug 20, 2019 · US
Electrical system and electrical switching apparatus therefor
US-2018294123-A1 · Oct 11, 2018 · US
Quickly closing switch element
US-2018144890-A1 · May 24, 2018 · US
Switch apparatus for high pressure environments and system having the same
US-2016126032-A1 · May 5, 2016 · US
On-load tap changer with connection to oil reservoir of a transformer
US-2015325387-A1 · Nov 12, 2015 · US
Fail-open mechanism for motorized switch
US-9177741-B2 · Nov 3, 2015 · US
Switch having two sets of contact elements
US-9035212-B2 · May 19, 2015 · US