Quieted front exhaust motor
US-12496699-B2 · Dec 16, 2025 · US
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specially adapted for reversible machines or engines
specially adapted for reversible machines or engines · 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 | F01C20/04 |
| Official title | specially adapted for reversible machines or engines |
| Display label | specially adapted for reversible machines or engines |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air motor with increased dwell at max vane extension
US-2024368992-A1 · Nov 7, 2024 · US
Quieted front exhaust motor
US-2024351180-A1 · Oct 24, 2024 · US
Reversible gerotor pump system
US-11859614-B2 · Jan 2, 2024 · US
Reversible gerotor pump system
US-2023022514-A1 · Jan 26, 2023 · US
Reversing mechanism for a power tool
US-11541525-B2 · Jan 3, 2023 · US
Reversing mechanism for a power tool
US-2021394351-A1 · Dec 23, 2021 · US
Compressed air energy storage power generation device and compressed air energy storage power generation method
US-2021388854-A1 · Dec 16, 2021 · US
Reversing mechanism for a power tool
US-10590770-B2 · Mar 17, 2020 · US
Turning device
US-10487658-B2 · Nov 26, 2019 · US
Reversible pneumatic vane motor
US-9835031-B2 · Dec 5, 2017 · US
Hydroelectric gear pump with varying helix angles of gear teeth
US-2017248019-A1 · Aug 31, 2017 · US
Turning device
US-2017226858-A1 · Aug 10, 2017 · US
Reversing Mechanism for a Power Tool
US-2016258291-A1 · Sep 8, 2016 · US
Fluid machine and rankine cycle
US-2015064039-A1 · Mar 5, 2015 · US