Display device for a watch
AssigneeEterna SA
InventorsWilly Meier, Paul Gerber
Life of this patent
Estimating the term…
Abstract
A display device is provided for a watch movement provided with a final gear train intended to drive, at least in a mediated way, means of displaying the time and an energy source driving the final gear train. In one implementation, the display device comprises a display disk for an additional function, and a display gearing of which one moving part carries the display disk. The display device also comprises a second energy source connected mechanically to the display gearing and operating means for the display gearing, designed so as to cause the gearing to be driven by the second energy source when the information for display has to be changed.
Claims10
A display device intended to be fitted to a watch movement of the type having a final gear train intended to drive, at least in a mediated way, means of displaying the time and an energy source driving the final gear train, the display device comprising:
- a display disk for an additional function,
- a display gearing of which one moving part carries the display disk,
- a second energy source, connected mechanically to the display gearing, and
- operating means for the display gearing, designed so as to cause the gearing to be driven by the second energy source when the information for display has to be changed.
Dependencies are inferred from the claim text.