Barrel for timepiece
AssigneeRolex SA
InventorsFlorent Millet, Julien Saglini
Life of this patent
Estimating the term…
Abstract
A barrel for timepiece movement, comprising a barrel shaft (20) around which is arranged, in a rotationally mobile manner, an assembly comprising a drum (30) and a cover (40) delimiting a housing (50) for receiving a barrel spring (51), the drum (30) and the cover (40) each having a wall (31, 41) extending from a peripheral end (34, 44) of the barrel to a central end of the barrel at the level of the barrel shaft (20), wherein at least a part of at least one of said walls (31, 41) has a variable thickness which increases continually with distance away from the peripheral end of the barrel.
Claims20
A barrel for timepiece movement, comprising:
- a barrel shaft, and
- an assembly comprising a drum and a cover delimiting a housing for receiving a barrel spring, the assembly being arranged around the barrel shaft in a rotationally mobile manner,
- the drum and the cover each having a respective wall extending from a peripheral end of the barrel to a central end of the barrel in a vicinity of the barrel shaft,
- wherein at least a part of at least one of said respective walls has a variable thickness which increases continually with distance away from the peripheral end of the barrel, over a distance of at least half a radius of the drum.
A method for manufacturing a barrel for timepiece movement, comprising:
- producing by material removal at least one of (i) a barrel drum and (ii) a cover intended to delimit a housing to receive a barrel spring, the drum and the cover each having a respective wall extending from a peripheral end of the barrel to a central end of the barrel in a vicinity of the barrel shaft,
- wherein the producing step creates a variable thickness, which increases continually with distance away from the peripheral end of the barrel, of at least a part of at least one of said walls over a distance of at least half a radius of the drum.
Dependencies are inferred from the claim text.