Estimation apparatus and crane
US-12492104-B2 · Dec 9, 2025 · US
Adaptations of limit switches
Adaptations of limit switches · 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 | B66D1/56 |
| Official title | Adaptations of limit switches |
| Display label | Adaptations of limit switches |
| Total patents | 57 |
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 | 6 |
| 2019 | 13 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and method for loading and unloading cargo of air mobility
US-12473088-B2 · Nov 18, 2025 · US
Fairlead with integrated positioning device
US-12234130-B2 · Feb 25, 2025 · US
Homing load detecting device for rescue hoist and winch assemblies
US-2024158211-A1 · May 16, 2024 · US
Method to detect homing loads in rescue hoist and winch assemblies
US-2024158210-A1 · May 16, 2024 · US
Electric hoisting machine and control device and control method therefor
US-11853037-B2 · Dec 26, 2023 · US
Estimation apparatus and crane
US-2023406678-A1 · Dec 21, 2023 · US
Winch and fairlead assembly for a vehicle
US-2023286785-A1 · Sep 14, 2023 · US
Apparatus and method for loading and unloading cargo of air mobility
US-2023264816-A1 · Aug 24, 2023 · US
Rotational over travel protection for preventing over rotation of an object
US-11631557-B2 · Apr 18, 2023 · US
Lift assembly systems and methods
US-11511978-B2 · Nov 29, 2022 · US
Governor assembly and elevator system
US-11465881-B2 · Oct 11, 2022 · US
Rotational Over Travel Protection for Preventing Over Rotation of an Object
US-2022254584-A1 · Aug 11, 2022 · US
Compact hoist accessories and combination systems
US-11319198-B2 · May 3, 2022 · US
Fairlead with integrated positioning device
US-2022112055-A1 · Apr 14, 2022 · US
Double-drum intermediate gear linkage winding type hoisting system
US-11299378-B2 · Apr 12, 2022 · US
Double-drum linkage winding type hoisting system
US-2021300736-A1 · Sep 30, 2021 · US
Compact hoist system
US-11111117-B2 · Sep 7, 2021 · US
Crane winch assembly stowage and mode detection system and method
US-11053100-B1 · Jul 6, 2021 · US
Telescopic column
US-11047448-B2 · Jun 29, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66D1/56?
- CPC B66D1/56 is the Cooperative Patent Classification code for “Adaptations of limit switches.”
- How many patents are filed under CPC B66D1/56 (Adaptations of limit switches)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC B66D1/56 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).