Method for controlling an actuation assembly
US-12411473-B2 · Sep 9, 2025 · US
variable ratio or reversing gearing (fixed ratio gearing B66D1/22)
variable ratio or reversing gearing (fixed ratio gearing B66D1/22) · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B66D1/225 |
| Official title | {variable ratio or reversing gearing (fixed ratio gearing B66D1/22)} |
| Display label | variable ratio or reversing gearing (fixed ratio gearing B66D1/22) |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Drive unit for a construction and/or material handling machine
US-12013023-B2 · Jun 18, 2024 · US
Winch with advanced electrical and mechanical smart controls
US-2024124277-A1 · Apr 18, 2024 · US
Method for controlling an actuation assembly
US-2024053726-A1 · Feb 15, 2024 · US
Drive unit for a construction and/or material handling machine
US-2023151882-A1 · May 18, 2023 · US
Automatic load brake having wear-induced locking mechanism
US-11377331-B2 · Jul 5, 2022 · US
High capacity cable puller with multi-speed automatic shifting transmission
US-2021362988-A1 · Nov 25, 2021 · US
Chain block
US-11034561-B2 · Jun 15, 2021 · US
Automatic load brake having wear-induced locking mechanism
US-2020307972-A1 · Oct 1, 2020 · US
Coaxial hoist geartrain cartridge
US-10752478-B2 · Aug 25, 2020 · US
Multiplying nested gearbox
US-10634218-B2 · Apr 28, 2020 · US
Hoist cable sensor with differential drive
US-2020102195-A1 · Apr 2, 2020 · US
Mechanism to selectively fix or free planetary carrier of epicyclic gearbox
US-2020087123-A1 · Mar 19, 2020 · US
Chain block
US-2020062559-A1 · Feb 27, 2020 · US
Motor assembly for drawworks systems and methods
US-10508715-B2 · Dec 17, 2019 · US
Mechanism to selectively fix or free planetary carrier of epicyclic gearbox
US-10479659-B2 · Nov 19, 2019 · US
Drawworks systems and methods
US-10464791-B2 · Nov 5, 2019 · US
Multiplying Nested Gearbox
US-2019128379-A1 · May 2, 2019 · US
Power Bar for Winch
US-2019112168-A1 · Apr 18, 2019 · US
Swivel winch rotated via an actuator in response to pressure sensor data
US-10173870-B1 · Jan 8, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66D1/225?
- CPC B66D1/225 is the Cooperative Patent Classification code for “variable ratio or reversing gearing (fixed ratio gearing B66D1/22).”
- How many patents are filed under CPC B66D1/225 (variable ratio or reversing gearing (fixed ratio gearing B66D1/22))?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC B66D1/225 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).