Hydraulic axial piston unit and method for controlling of a hydraulic axial piston unit
US-2025223951-A1 · Jul 10, 2025 · US
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of machines or pumps with rotary cylinder blocks
of machines or pumps with rotary cylinder blocks · 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 | F04B1/30 |
| Official title | of machines or pumps with rotary cylinder blocks |
| Display label | of machines or pumps with rotary cylinder blocks |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2018 | 3 |
| 2020 | 2 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System for detecting abnormality in hydraulic rotating equipment
US-2025101967-A1 · Mar 27, 2025 · US
Hydraulic axial piston unit and method for controlling of a hydraulic axial piston unit
US-11946462-B2 · Apr 2, 2024 · US
Hydrostatic piston machine unit
US-11592012-B2 · Feb 28, 2023 · US
Failure diagnosing device, pump unit including same, and failure diagnosing method
US-11365727-B2 · Jun 21, 2022 · US
Hydraulic axial piston unit and method for controlling of a hydraulic axial piston unit
US-2021164501-A1 · Jun 3, 2021 · US
Hydraulic motor
US-11009015-B1 · May 18, 2021 · US
Bent-axis axial-piston hydraulic machine
US-2021108623-A1 · Apr 15, 2021 · US
Hydrostatic Piston Machine Unit
US-2021071528-A1 · Mar 11, 2021 · US
Liquid pressure rotary machine
US-10920757-B2 · Feb 16, 2021 · US
Failure diagnosing device, pump unit including same, and failure diagnosing method
US-2020158146-A1 · May 21, 2020 · US
Liquid pressure rotary machine
US-2020018298-A1 · Jan 16, 2020 · US
Hydraulic motor
US-10125752-B1 · Nov 13, 2018 · US
Electronic control for a rotary fluid device
US-10100827-B2 · Oct 16, 2018 · US
Electrically controlled pressure control valve for an adjustable hydrostatic pump
US-10072654-B2 · Sep 11, 2018 · US
Variable displacement pump
US-2016252080-A1 · Sep 1, 2016 · US
Hydrostatic machine having a control device having a return element for controlling a regulating valve
US-9297369-B2 · Mar 29, 2016 · US