Lifting gear
US-2025153983-A1 · May 15, 2025 · US
Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00)
Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00) · 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 | B66D3/04 |
| Official title | Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00) |
| Display label | Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00) |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2017 | 7 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 12 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for determining the rope reeving of a pulley block
US-11999601-B2 · Jun 4, 2024 · US
Snatch ring pulley
US-11958727-B2 · Apr 16, 2024 · US
Spring lifting device for a crane
US-11932516-B2 · Mar 19, 2024 · US
Portable winch
US-11913588-B2 · Feb 27, 2024 · US
Capstan effect device
US-11685639-B2 · Jun 27, 2023 · US
Portable winch
US-2023100802-A1 · Mar 30, 2023 · US
Lifter
US-11613450-B2 · Mar 28, 2023 · US
Truck cap lifting kit
US-11607938-B2 · Mar 21, 2023 · US
Method and extraction system for extracting an electronic device from an immersive cooling container
US-2022315399-A1 · Oct 6, 2022 · US
Portable winch
US-11441722-B2 · Sep 13, 2022 · US
Drilling rig hoisting system
US-11339615-B2 · May 24, 2022 · US
Drilling rig hoisting system
US-2021301601-A1 · Sep 30, 2021 · US
Capstan Effect Device
US-2021285525-A1 · Sep 16, 2021 · US
Pulley for a wearable article
US-11091357-B2 · Aug 17, 2021 · US
Compressing device and method for carrying out compressing device
US-11028839-B2 · Jun 8, 2021 · US
Spring lifting device for a crane
US-2021139289-A1 · May 13, 2021 · US
Snatch ring pulley
US-2021130142-A1 · May 6, 2021 · US
Dump block for dragline rigging
US-10981759-B2 · Apr 20, 2021 · US
Portable winch
US-2021078841-A1 · Mar 18, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B66D3/04?
- CPC B66D3/04 is the Cooperative Patent Classification code for “Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00).”
- How many patents are filed under CPC B66D3/04 (Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00))?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC B66D3/04 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).