Winding drum and torsion spring for a winding drum
US-12466693-B2 · Nov 11, 2025 · US
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using torsion springs
using torsion springs · 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 | F03G1/026 |
| Official title | {using torsion springs} |
| Display label | using torsion springs |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Winding drum and torsion spring for a winding drum
US-2023011558-A1 · Jan 12, 2023 · US
Spring array and method for door counterbalancing
US-11536067-B2 · Dec 27, 2022 · US
Flexible organic light-emitting display (OLED) and spring component
US-11404660-B2 · Aug 2, 2022 · US
Coiled and twisted nanofiber yarns for electrochemically harvesting electrical energy from mechanical deformation
US-11085422-B2 · Aug 10, 2021 · US
Flexible organic light-emitting display (oled) and spring component
US-2021184159-A1 · Jun 17, 2021 · US
Spring array and method for door counterbalancing
US-2021002934-A1 · Jan 7, 2021 · US
Coiled and twisted nanofiber yarns for electrochemically harvesting electrical energy from mechanical deformation
US-2020208614-A1 · Jul 2, 2020 · US
Display device with rollable display panel
US-10701821-B2 · Jun 30, 2020 · US
Spring operated actuator for an electric apparatus
US-10522304-B2 · Dec 31, 2019 · US
Spring Operated Actuator For An Electric Apparatus
US-2019348231-A1 · Nov 14, 2019 · US
Hybrid spring and electric motor tape rule
US-10422616-B2 · Sep 24, 2019 · US
Display device with rollable display panel
US-2019037716-A1 · Jan 31, 2019 · US
Hybrid spring and electric motor tape rule
US-2019011244-A1 · Jan 10, 2019 · US
Seismic-Source Apparatus And Detection System
US-2018275297-A1 · Sep 27, 2018 · US
Actuation systems and methods
US-9879767-B2 · Jan 30, 2018 · US
Actuation Systems and Methods
US-2016138690-A1 · May 19, 2016 · US