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US 2011/0164474 A1Published application
Device comprising a clock movement and a chronograph module
AssigneeLVMH Swiss Manufactures SA
InventorHughes Jolidon
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AssigneeLVMH Swiss Manufactures SA
InventorHughes Jolidon
Estimating the term…
A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second. The organs of the base movement and of the chronograph module are arranged in such a way that in assembled state, the height and overall diameter do not exceed 7.75 mm and 30 mm respectively, the dimensions of the chronograph itself being not greater than 4 mm (height) and 30 mm (diameter) when its elements are mounted on a bottom plate, so that the device can advantageously be integrated in the case of a wrist-watch and affords an aesthetic exterior.
1-34. (canceled)
A wrist-watch, comprising:
The wrist-watch of claim 1, wherein:
The wrist-watch of claim 2, wherein the frequency of oscillation supplied by the second regulator organ is equal N times the frequency of oscillation supplied by the first regulator organ, the coefficient N being defined in such a way that the chronograph module allows a resolution to the hundredth of second at least.
The wrist-watch of claim 3, wherein the coefficient N is at least equal to 12.50, the frequency of the base movement being 28,000 oscillations per hour and the frequency of the chronograph module being at least 360,000 oscillations per hour.
The wrist-watch of claim 4, wherein an indicator organ of the chronograph module is mounted on a staff of the hundredth of second counter performing a 360 degrees rotation per second, and wherein said indicator organ is constituted of a hand permitting time intervals of a hundredth of second to be read, by coincidence of said hand with a graduation comprising hundred marks placed on a dial.
The wrist-watch of claim 1, wherein a balance of the regulator organ of the chronograph module is put in motion or stopped by means of a spring-blade mounted on a launcher.
The wrist-watch of claim 1, wherein said chronograph module is wound manually.
The wrist-watch of claim 1, wherein the chronograph module removably overlaps a clock part of said base movement.
The wrist-watch of claim 1, wherein organs of a clock part of the base movement and of the chronograph module are arranged on a single common bottom plate.
Dependencies are inferred from the claim text.