Barrel
AssigneeSowind SA
InventorsStephane Oes, Laurent Calame
Life of this patent
Estimating the term…
Abstract
A timepiece barrel includes a drum defining a first compartment and a superimposed second compartment; a first tubular hub secured to a first cover and housed at least partially in the first compartment; a second tubular hub secured to a second cover housed at least partially in the second compartment. Each compartment contains a spring wound into a spiral and an inner first end of which collaborates with the first and second hubs respectively and a second end of which collaborates with the drum. The compartments are open on the side of the covers and the first and second covers are free with reference to the drum and are each provided with peripheral teeth, while the drum has no teeth.
Claims20
A timepiece barrel, comprising:
- a drum defining first and second superimposed compartments,
- a first tubular hub secured to a first cover and housed at least partially in the first compartment,
- a second tubular hub secured to a second cover housed at least partially in the second compartment, said second tubular hub rotating independently from said first tubular hub,
- each compartment containing a spring wound in a spiral, one inner end of which cooperates with the first and second hubs, respectively, and a second end of which cooperates with the drum, said compartments being open on the side of the covers, and in that said first and second covers are free relative to the drum and are each provided with a peripheral toothing, while the drum has no toothing.
Dependencies are inferred from the claim text.