Watch
AssigneeIWC International Watch Co. AG
InventorKurt Klaus
Life of this patent
Estimating the term…
Abstract
A watch having a crown for setting the motion work and having a device, which can be driven by the hour wheel of the movement of the watch, for the automatic display of the months and the days of the month in accordance with the Gregorian calendar. In this connection, the display of the day of the month can be driven by a date wheel 13 and the display of the month by a month wheel 22 of the device. A year wheel of a year display and a decade wheel 26 of a decade display and possibly a century drive of a century display form together with the wheelwork of the month display and the day of the month display a closed coupling-less calendar wheelwork train whose date wheel 13 can be set by a correction device.
Claims17
In a watch having a crown for setting hands of the watch, the crown also setting a device which can be driven by the hour wheel of a watch movement for operating a day-of-the-month display to automatically display the month and the day of the month in accordance with the Gregorian calendar, the day-of-the-month display being driven by a date wheel of the device and the month display being driven by a month wheel of the device, the improvement comprising
- a year wheel of a year display including a first gear, a decade wheel of a multiple-year display including a second gear, together with a wheel work of the month display and the day-of-the-month display including a third gear;
- and a closed coupling-less calendar wheelwork train allowing the date wheel to be set by a correction means, said calendar wheelwork train comprising said first and said second and said third gears.
In a watch having a corwn for setting hands of the watch, the crown also setting a device which can be driven by the hour wheel of a watch movement for operating a day-of-the-month display to automatically display the month and the day of the month in accordance with the Gregorian calendar, the day-of-the-month display being driven by a date wheel of the device and the month display being driven by a month wheel of the device, the improvement comprising
- a year wheel of a year display and a decade wheel of a multiple-year display which form, together with a wheelwork of the month display and the day-of-the-month display, a closed, coupling-less calendar wheelwork train allowing the date wheel to be set by a correction means;
- the watch further comprising
- a shift finger disposed on the month wheel;
- a two-part, turnably mouned intermediate wheel mechanically coupled to the shift finger to be advanced by the shift finger, the two parts of the intermediate wheel having the same pitch circle and the same pitch, the first part of the intermediate wheel being provided completely with teeth, and the second part of the intermediate wheel having one-tenth the number of teeth as that of the first part of the intermediate wheel;
- and wherein
- the year wheel is driven by the first part of the intermediate wheel and the decade wheel is driven by the second part of the intermediate wheel.
In a watch having a crown for setting hands of the watch, the crown also setting a device which can be driven by the hour wheel of a watch movement for operating a day-of-the-month display to automatically display the month and the day of the month in accordance with the Gregorian calendar, the day-of-the-month display being driven by a date wheel of the device and the month display being driven by a month wheel of the device, the improvement comprising
- a year wheel of a year display and a decade wheel of a multiple-year display which form, together with a wheelwork of the month display and the day-of-the-month display, a closed, coupling-less calendar wheelwork train allowing the date wheel to be set by a correction means;
- and wherein
- said year wheel and the decade wheel are arranged coaxially to each other;
- the watch further comprising
- a decade display ring, and a coaxial year display ring which is surrounded by the decade display ring and which is firmly connected to the decade wheel, and wherein
- the year wheel is firmly connected to the coaxial year display ring.
Dependencies are inferred from the claim text.