Fast correction system for calendar information

1. A timepiece mechanism comprising:

a time measurement system and a calendar system connected to the time measurement system, the time measurement and calendar systems each being connected to a display system for displaying at least one time related value and at least one calendar related value, and

a fast calendar correction system for correcting at any time and in predetermined steps the display of the at least one calendar value while maintaining the at least one time related value and the connection of the display system to the time measurement and calendar systems during the correction phase,

wherein the fast calendar correction system includes a correction wheel set connected to the display system, a drive wheel mounted for free rotation on the correction wheel set and permanently connected to the time measurement system, and elastic coupling means between the correction wheel set and the drive wheel, so that the at least one calendar value of the display system is shifted by the calendar system when the fast calendar correction system is not active, or by the fast calendar correction system when it is active, without inducing stresses or movements in the time measurement system and wherein the elastic coupling means include two stop members pressed against toothing of a star of the correction wheel set by two elastic strips, each stop member including a slide-block cooperating with a slide-way integral with the drive wheel to guide the movement of the elastic coupling means and to transmit the motion of the drive wheel only to the at least one calendar value of the display system.

2. The mechanism according to claim 1 , wherein the slide-way is arranged in the thickness of the drive wheel in order to reduce the thickness of the mechanism.

3. The mechanism according to claim 1 , wherein the elastic strips are bent and each connect the two stop members on either side in order to form a substantially annular one-piece part.

4. The mechanism according to claim 1 , wherein the fast calendar correction system further includes a reduction device coupled to the correction wheel set.

5. The mechanism according to claim 4 , wherein the reduction device is of the epicyclic train type, a pinion of the correction wheel set forming the inner planetary wheel and two satellites mounted between the pinion and an outer planetary wheel forming the reduction means.

6. The mechanism according to claim 4 , wherein the reduction device includes at least one wheel-pinion assembly forming the reduction means.

7. The mechanism according to claim 1 , wherein the display system is of the dragging, instantaneous or semi-instantaneous type.

8. The mechanism according to claim 1 , wherein the predetermined step is proportional to the number of teeth of the star of the correction wheel set.

9. The mechanism according to claim 1 , wherein the display of the at least one time related value and/or the at least one calendar related value is of the type with a hand.

10. The mechanism according to claim 1 , wherein the display of the at least one time related value and/or the at least one calendar related value is of the type with a disc.

11. The mechanism according to claim 1 , wherein the predetermined step is of 12 hours.

12. The mechanism according to claim 1 , wherein the predetermined step is of 24 hours.

13. A timepiece wherein it includes a mechanism according to claim 1 .