Assemblies and methods for enhancing diversion of gas and/or fluid from operation of a reciprocating compressor
US-2026049607-A1 · Feb 19, 2026 · US
having cylinders arranged oppositely relative to main shaft
having cylinders arranged oppositely relative to main shaft · 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 | F04B27/02 |
| Official title | having cylinders arranged oppositely relative to main shaft |
| Display label | having cylinders arranged oppositely relative to main shaft |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Positive displacement machine, compressor, cooling apparatus, and electronic equipment
US-12529362-B2 · Jan 20, 2026 · US
Reciprocating piston pump
US-12404847-B2 · Sep 2, 2025 · US
Compression system with gas leak recovery and fuel cells, and method
US-2025260028-A1 · Aug 14, 2025 · US
Double acting two stage piston type pump
US-2025237203-A1 · Jul 24, 2025 · US
Method for Determining a Piston Position in a Hydraulic Cylinder Drive, Method for Operating an Arrangement including a Hydraulic Cylinder Drive, and Mechanism for Implementing the Methods
US-2025188962-A1 · Jun 12, 2025 · US
Multi-compression unit for ammonia production
US-2025178912-A1 · Jun 5, 2025 · US
Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine
US-12055134-B2 · Aug 6, 2024 · US
Air compressor system having a hollow piston forming an interior space and a check valve in a piston crown allowing air to exit the interior space
US-11913441-B2 · Feb 27, 2024 · US
Reciprocating piston pump
US-2024052818-A1 · Feb 15, 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
Double-piston compressor having a sliding block producing a stroke curve that deviates from a sinusoidal stroke curve
US-11732702-B2 · Aug 22, 2023 · US
Air compressor system
US-2023204022-A1 · Jun 29, 2023 · US
Reciprocating piston pump
US-2023046193-A1 · Feb 16, 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
Linear actuator pumping system
US-11396868-B2 · Jul 26, 2022 · US
Double acting two stage integrated pump
US-11300110-B2 · Apr 12, 2022 · US
Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine
US-2021404458-A1 · Dec 30, 2021 · US
Reciprocating compressor and control method therefor
US-11143177-B2 · Oct 12, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B27/02?
- CPC F04B27/02 is the Cooperative Patent Classification code for “having cylinders arranged oppositely relative to main shaft.”
- How many patents are filed under CPC F04B27/02 (having cylinders arranged oppositely relative to main shaft)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC F04B27/02 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).