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US 7,350,966 B2Granted
Watch including at least two regulating systems
AssigneeMontres Breguet S.A.
InventorAlain Zaugg
Life of this patent
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AssigneeMontres Breguet S.A.
InventorAlain Zaugg
Estimating the term…
The invention concerns a watch with a mechanical movement of the type comprising at least two regulating systems (SR1, SR2) each including a mechanical oscillator and an escapement. The movement includes as many sub-assemblies (SE1, SE2) as there are regulating systems, each of said sub-assemblies including a regulating system (SR1, SR2), a barrel (B1, B2) and a going train transmitting energy from the barrel to the regulating system inside the sub-assembly. A differential display gear (Da) connects the barrel or the going train of each sub-assembly to the display (A) to average out the rate of the two sub-assemblies. In a preferred embodiment, the two sub-assemblies are mounted on a common rotating support (5) and their regulating systems are tourbillons which make an orbital movement about the center of the watch dial.
A watch with a mechanical movement including at least two regulating systems each including a mechanical oscillator and an escapement, the regulating systems being mounted on a common support and connected to a common time display device via a differential gear, wherein the movement includes as many sub-assemblies as there are regulating systems, each of said sub-assemblies including a regulating system, a barrel and a going train transmitting energy from the barrel to the regulating system inside the sub-assembly, and wherein the differential gear, called the differential display gear, connects the barrel or the going train of each of said sub-assemblies to the display.
Dependencies are inferred from the claim text.