Hydrostatic shoe with face seal
US-12492637-B2 · Dec 9, 2025 · US
Piston shoes
Piston shoes · 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 | F04B27/0886 |
| Official title | {Piston shoes} |
| Display label | Piston shoes |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 8 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrostatic shoe with face seal
US-2025243758-A1 · Jul 31, 2025 · US
Ball support arrangement for axial piston machines
US-2025207664-A1 · Jun 26, 2025 · US
Compressor having bulged bushings
US-12258965-B2 · Mar 25, 2025 · US
Compression mechanism
US-2024254989-A1 · Aug 1, 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
Shoe and swash plate compressor including the shoe
US-11015586-B2 · May 25, 2021 · US
Method for producing a swashplate
US-10792733-B2 · Oct 6, 2020 · US
Shoe for compressor
US-10794372-B2 · Oct 6, 2020 · US
Method for producing semispherical shoe for swash plate compressor and injection molding die
US-10670074-B2 · Jun 2, 2020 · US
Semispherical shoe for swash plate compressor and swash plate compressor
US-10598167-B2 · Mar 24, 2020 · US
Swash plate compressor
US-2019331105-A1 · Oct 31, 2019 · US
Sliding component, method for producing sliding component, and device for producing sliding component
US-10384301-B2 · Aug 20, 2019 · US
Shoe for compressor
US-2019186479-A1 · Jun 20, 2019 · US
Double-headed piston type swash plate compressor
US-10267299-B2 · Apr 23, 2019 · US
Shoe and swash plate compressor including the shoe
US-2019113030-A1 · Apr 18, 2019 · US
Slide member
US-10260491-B2 · Apr 16, 2019 · US
Double-headed piston type swash plate compressor
US-10145370-B2 · Dec 4, 2018 · US
Device for producing metal member
US-10071440-B2 · Sep 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B27/0886?
- CPC F04B27/0886 is the Cooperative Patent Classification code for “Piston shoes.”
- How many patents are filed under CPC F04B27/0886 (Piston shoes)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC F04B27/0886 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).