Variable displacement hydraulic motor
US-12326088-B2 · Jun 10, 2025 · US
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Pistons
Pistons · 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 | F01B3/0085 |
| Official title | {Pistons} |
| Display label | Pistons |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydraulic machine with a threaded central pin for setting machine preload
US-2024410282-A1 · Dec 12, 2024 · US
Variable displacement hydraulic motor
US-2024280020-A1 · Aug 22, 2024 · US
Hydraulic unit cylinder block for integrated drive generator
US-10539213-B2 · Jan 21, 2020 · US
Articulated coupling for piston sealing device
US-10487825-B2 · Nov 26, 2019 · US
Hydrostatic axial piston machine of swash plate design with an adjustable swept volume, in particular hydrostatic axial piston pump
US-10408199-B2 · Sep 10, 2019 · US
Method for manufacturing a spherical-cap-shaped recess in a drive shaft, drive shaft comprising the recess, and hydrostatic axial piston machine comprising the drive shaft
US-10302072-B2 · May 28, 2019 · US
Hydraulic unit cylinder block for integrated drive generator
US-2019101202-A1 · Apr 4, 2019 · US
Piston included in liquid-pressure rotating device and liquid-pressure rotating device
US-10167855-B2 · Jan 1, 2019 · US
Hydraulic pump
US-2018335024-A1 · Nov 22, 2018 · US
Articulated coupling for piston sealing device
US-2018245583-A1 · Aug 30, 2018 · US
Hydraulic piston machine, in particular water hydraulic machine
US-9915248-B2 · Mar 13, 2018 · US
Hydrostatic Axial Piston Machine of Swash Plate Design with an Adjustable Swept Volume, in particular Hydrostatic Axial Piston Pump
US-2018058433-A1 · Mar 1, 2018 · US
Method for Manufacturing a Spherical-Cap-Shaped Recess in a Drive Shaft, Drive Shaft Comprising the Recess, and Hydrostatic Axial Piston Machine Comprising the Drive Shaft
US-2017138355-A1 · May 18, 2017 · US
Hydrostatic axial piston machine
US-9644617-B2 · May 9, 2017 · US
Piston and slipper assembly for hydraulic unit
US-2016281691-A1 · Sep 29, 2016 · US
Piston included in liquid-pressure rotating device and liquid-pressure rotating device
US-2016076524-A1 · Mar 17, 2016 · US
Combustion chamber for large gas engine
US-9200559-B2 · Dec 1, 2015 · US
Hydrostatic Axial Piston Machine
US-2015078923-A1 · Mar 19, 2015 · US