Friction system for a horology movement
US-2026044113-A1 · Feb 12, 2026 · US
This page is not indexed by search engines while we improve data quality.
Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks); (friction clutch between spring and spring cylinder G04B1/185)
Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks); (friction clutch between spring and spring cylinder G04B1/185) · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G04B1/165 |
| Official title | {Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks); (friction clutch between spring and spring cylinder G04B1/185)} |
| Display label | Spring cylinder with friction transmission to the gearing (especially for Roskopf clockworks); (friction clutch between spring and spring cylinder G04B1/185) |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2017 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Movement for mechanical timepiece
US-2017351215-A1 · Dec 7, 2017 · US
Timepiece barrel assembly with reduced core diameter
US-9158282-B2 · Oct 13, 2015 · US
Timepiece barrel with reduced core diameter
US-9146535-B2 · Sep 29, 2015 · US
Timepiece barrel assembly with reduced core diameter
US-9033573-B2 · May 19, 2015 · US