Safety device and flight vehicle provided with safety device
US-12492005-B2 · Dec 9, 2025 · US
having an auxiliary cushioning piston within the main piston or the cylinder end face
having an auxiliary cushioning piston within the main piston or the cylinder end face · 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 | F15B15/227 |
| Official title | {having an auxiliary cushioning piston within the main piston or the cylinder end face} |
| Display label | having an auxiliary cushioning piston within the main piston or the cylinder end face |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 4 |
| 2022 | 4 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cylinder device
US-12241488-B1 · Mar 4, 2025 · US
Safety device and flight vehicle provided with safety device
US-2024262513-A1 · Aug 8, 2024 · US
Actuator, safety device, and flying body
US-2024255010-A1 · Aug 1, 2024 · US
Fluid pressure cylinder
US-11493064-B2 · Nov 8, 2022 · US
Improved hydraulic cylinder for a work vehicle
US-2022154740-A1 · May 19, 2022 · US
Hydraulic actuator equipped with an end-of travel slowing device
US-11268549-B2 · Mar 8, 2022 · US
Fluid pressure cylinder
US-2022025913-A1 · Jan 27, 2022 · US
Hydraulic actuator equipped with an end-of travel slowing device
US-2020362887-A1 · Nov 19, 2020 · US
Fluid pressure cylinder
US-10677270-B2 · Jun 9, 2020 · US
Hydraulic driving device for steam valve, combined steam valve, and steam turbine
US-10605116-B2 · Mar 31, 2020 · US
Actuator rate control with energy absorbing pressure relief system
US-10570935-B2 · Feb 25, 2020 · US
Rotational inerter and method
US-10337581-B2 · Jul 2, 2019 · US
Hydraulic cylinder for aircraft landing gear
US-10214280-B2 · Feb 26, 2019 · US
Cushion mechanism for a hydraulic cylinder
US-10202988-B2 · Feb 12, 2019 · US
Rotational inerter and method
US-2019003548-A1 · Jan 3, 2019 · US
Fluid pressure cylinder
US-2018298927-A1 · Oct 18, 2018 · US
Rotational inerter and method for damping an actuator
US-10088006-B2 · Oct 2, 2018 · US
Hydraulic driving device for steam valve, combined steam valve, and steam turbine
US-2018216486-A1 · Aug 2, 2018 · US
Actuator in a lift truck
US-9926178-B2 · Mar 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B15/227?
- CPC F15B15/227 is the Cooperative Patent Classification code for “having an auxiliary cushioning piston within the main piston or the cylinder end face.”
- How many patents are filed under CPC F15B15/227 (having an auxiliary cushioning piston within the main piston or the cylinder end face)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F15B15/227 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).