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US 9,671,754 B2Granted
Barrel with substantially constant torque
AssigneeGlashütter Uhrenbetrieb GmbH
InventorsPatrick Streubel, Silko Goldmann
Life of this patent
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Abstract
A barrel for a timepiece. The barrel has a device for limiting the number of running rotations of the barrel, wherein this device still allows any number of winding rotations of the barrel.
Claims20
A barrel for a timepiece, wherein said barrel comprises:
- a device to limit a number of running rotations of the barrel, wherein
- said device still allows any number of winding rotations of the barrel, and
- an outer periphery of said device in a radial direction of the barrel is disposed radially inward with respect to an outer periphery of a mainspring of the barrel in the radial direction.
A barrel for a timepiece, wherein said barrel comprises:
- a device to limit a number of running rotations of the barrel, wherein
- said device still allows any number of winding rotations of the barrel,
- said device comprises a rotatable positioning ring mounted on the barrel, and
- said rotatable positioning ring is fitted in a stack between a base of the barrel and a cover plate.
1 more element
A barrel for a timepiece, wherein said barrel comprises:
- a device to limit a number of running rotations of the barrel, wherein
- said device still allows any number of winding rotations of the barrel,
- said device comprises a rotatable positioning ring mounted on the barrel, and
- said positioning ring comprises a first pin, which interacts with a return spring in a placement plane in a winding direction when winding up the barrel.
1 more element
Dependencies are inferred from the claim text.