Positive displacement machine, compressor, cooling apparatus, and electronic equipment
US-12529362-B2 · Jan 20, 2026 · US
with an actuating element at the inner ends of the cylinders
with an actuating element at the inner ends of the cylinders · 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 | F04B27/053 |
| Official title | with an actuating element at the inner ends of the cylinders |
| Display label | with an actuating element at the inner ends of the cylinders |
| Total patents | 43 |
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 | 2 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piston type pump drive arrangement
US-12416296-B2 · Sep 16, 2025 · US
Reciprocating piston pump
US-12404847-B2 · Sep 2, 2025 · US
Multi-compression unit for ammonia production
US-2025178912-A1 · Jun 5, 2025 · US
Piston-cylinder assembly for a radial piston compressor, and radial piston compressor
US-2025172133-A1 · May 29, 2025 · US
Radial piston compressor with transmission element and piston guide ring
US-12286965-B2 · Apr 29, 2025 · US
Air compressor for vehicle
US-2024352925-A1 · Oct 24, 2024 · US
Vehicle with a retarder brake device, and corresponding braking method
US-2024286592-A1 · Aug 29, 2024 · US
Air compressor
US-12044227-B2 · Jul 23, 2024 · US
Reciprocating piston pump
US-2024052818-A1 · Feb 15, 2024 · US
Piston-cylinder assembly for a radial piston compressor, and radial piston compressor
US-2024011475-A1 · Jan 11, 2024 · US
Reciprocating piston pump comprising a housing defining a first chamber and a second chamber cooperating with a first piston and a second piston to define a third chamber and a fourth chamber
US-11815078-B2 · Nov 14, 2023 · US
Positive displacement machine, compressor, cooling apparatus, and electronic equipment
US-2023323869-A1 · Oct 12, 2023 · US
Air compressor
US-2023151803-A1 · May 18, 2023 · US
Reciprocating piston pump
US-2023046193-A1 · Feb 16, 2023 · US
Pump assembly
US-2023003210-A1 · Jan 5, 2023 · US
Reciprocating piston pump comprising a housing defining a first chamber and a second chamber cooperating with a first piston and a second piston to define a third chamber and a fourth chamber
US-11480165-B2 · Oct 25, 2022 · US
Piston type pump drive arrangement
US-2022235750-A1 · Jul 28, 2022 · US
Electric vacuum pump for braking system on passenger cars with v-twin piston arrangement
US-2022154707-A1 · May 19, 2022 · US
Compressor
US-2022074399-A1 · Mar 10, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B27/053?
- CPC F04B27/053 is the Cooperative Patent Classification code for “with an actuating element at the inner ends of the cylinders.”
- How many patents are filed under CPC F04B27/053 (with an actuating element at the inner ends of the cylinders)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F04B27/053 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).