IPC Subgroup
G04B 17/04 Oscillators acting by spring tension
Introduced: September 1968
Last revised: January 2006
Full Title
Mechanisms for stabilising frequency > Oscillators acting by spring tension
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
3 direct subcodes
Child Classifications
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- G04B 17/06 Oscillators with hairsprings, e.g. balance
- G04B 17/08 Oscillators with coil springs stretched and unstretched axially
- G04B 17/1 Oscillators with torsion strips or with springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane