IPC Main Group
G04B 5/00 Automatic winding-up
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS
4 direct subcodes
Child Classifications
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- G04B 5/02 by self-winding caused by movement of the watch
- G04B 5/2 by movements of other objects, e.g. by opening hand-bag, by opening case, by opening door; Winding-up by wind power
- G04B 5/22 by thermometric, barometric, or like effects or alterations
- G04B 5/24 Protecting means preventing overwinding