Hydraulic piston pump/motor with non-cantilevered pistons
US-12553344-B2 · Feb 17, 2026 · US
Piston shoe retaining means
Piston shoe retaining means · 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 | F04B1/126 |
| Official title | Piston shoe retaining means |
| Display label | Piston shoe retaining means |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piston assembly for hydraulic pump
US-2025347276-A1 · Nov 13, 2025 · US
Straight axis variable displacement piston pump with feature to minimize piston side loading
US-12421944-B1 · Sep 23, 2025 · US
Hydraulic piston pump/motor with non-cantilevered pistons
US-2025290418-A1 · Sep 18, 2025 · US
Piston retainer plate
US-12372074-B1 · Jul 29, 2025 · US
Ball support arrangement for axial piston machines
US-2025207664-A1 · Jun 26, 2025 · US
Axial Piston Machine with Retraction Plate for High Rotational Speeds
US-2025003338-A1 · Jan 2, 2025 · US
Piston ball end
US-12078156-B2 · Sep 3, 2024 · US
Piston ball end
US-2024240624-A1 · Jul 18, 2024 · US
Piston of a hydraulic piston machine
US-11828274-B2 · Nov 28, 2023 · US
Piston of a hydraulic piston machine
US-2023279947-A1 · Sep 7, 2023 · US
Sliding member
US-11649802-B2 · May 16, 2023 · US
Hydrostatic axial piston machine of swash plate construction
US-11598322-B2 · Mar 7, 2023 · US
Sliding member
US-2022307461-A1 · Sep 29, 2022 · US
Hydraulic fan drive
US-2022082104-A1 · Mar 17, 2022 · US
Hydrostatic Axial Piston Machine of Swash Plate Construction
US-2022074396-A1 · Mar 10, 2022 · US
Swash-plate type piston pump motor
US-2021231112-A1 · Jul 29, 2021 · US
Hydrostatic axial piston machine
US-11002244-B2 · May 11, 2021 · US
Hydrostatic positive-displacement machine piston for the hydrostatic positive-displacement machine, and cylinder drum for the hydrostatic positive-displacement machine
US-10670000-B2 · Jun 2, 2020 · US
Swash plate type liquid-pressure rotating device and method of manufacturing same
US-10533544-B2 · Jan 14, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B1/126?
- CPC F04B1/126 is the Cooperative Patent Classification code for “Piston shoe retaining means.”
- How many patents are filed under CPC F04B1/126 (Piston shoe retaining means)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC F04B1/126 growing?
- Publication counts under this code: 2 in 2024 vs 6 in 2025 (latest complete years).