High-efficiency linear generator
US-12421890-B2 · Sep 23, 2025 · US
in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means
in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring 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 | F01B11/007 |
| Official title | {in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means} |
| Display label | in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-efficiency linear generator
US-2024287930-A1 · Aug 29, 2024 · US
High-efficiency linear generator
US-12000331-B2 · Jun 4, 2024 · US
High-efficiency linear generator
US-2023101969-A1 · Mar 30, 2023 · US
High-efficiency linear generator
US-11525391-B2 · Dec 13, 2022 · US
Six-cylinder opposed free piston internal combustion engine generator
US-11421586-B2 · Aug 23, 2022 · US
Six-Cylinder Opposed Free Piston Internal Combustion Engine Generator
US-2022120214-A1 · Apr 21, 2022 · US
Systems and methods for generating power using a combustion source
US-11280196-B2 · Mar 22, 2022 · US
High-efficiency linear combustion engine
US-2021079838-A1 · Mar 18, 2021 · US
Free piston device
US-10890070-B2 · Jan 12, 2021 · US
Linear expander and cryogenic refrigeration system including the same
US-10852040-B2 · Dec 1, 2020 · US
High-efficiency linear combustion engine
US-10851708-B2 · Dec 1, 2020 · US
Free piston apparatus
US-10844718-B2 · Nov 24, 2020 · US
Free piston device and method for operating a free piston device
US-10612380-B2 · Apr 7, 2020 · US
Free-piston device and method for operating a free-piston device
US-10605081-B2 · Mar 31, 2020 · US
Free piston device
US-10472995-B2 · Nov 12, 2019 · US
Free piston apparatus
US-2019085693-A1 · Mar 21, 2019 · US
Free piston device
US-2019085694-A1 · Mar 21, 2019 · US
Free piston device and method for operating a free piston device
US-2019085695-A1 · Mar 21, 2019 · US
Free-piston device and method for operating a free-piston device
US-2019085696-A1 · Mar 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01B11/007?
- CPC F01B11/007 is the Cooperative Patent Classification code for “in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means.”
- How many patents are filed under CPC F01B11/007 (in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC F01B11/007 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).