# US 2013/0051183 A1 · Calendar mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0051183 A1 - Document ID: US20130051183A1 - Status: Published application - Kind: A1 - Application number: 13/561,541 - Filed: 2012-07-30 - Published: 2013-02-28 - Earliest claimed: 2011-08-30 - Assignees: Breitling SA - Inventors: Jacques GABATHULER; Trung Thanh NGUYEN; Serge NICOLLIN; Florent ZUFFEREY - Web page: https://patentgrep.com/patent/US20130051183A1 ## CPC - G04B 19/25333: {wherein the date indicators are driven or released mechanically by a clockwork movement} - G04B 19/02: Back-gearing arrangements between gear train and hands {(transmissions in general G04B13/00)} - G04B 19/25373: {driven or released stepwise by an energy source which is released at determined moments by the clockwork movement} - G04B 27/026: {for several clockworks or pairs of hands and/or supplementary functions} - G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08) ## Abstract Calendar mechanism for a timepiece, includes: at least one mobile (22; 23) for driving an indicator, a wheel (1) which, during normal operation of the timepiece, is driven in a first direction (S1), a lever (16) for actuating the mobile (22; 23), and first and second cams (2, 3) driven by the wheel (1) and controlling the movements of the actuating lever (16), these first and second cams (2, 3) being arranged so that their relative angular position differs depending on the direction of rotation of the wheel (1) so that the movements of the actuating lever (16) cause the mobile (22; 23) to advance periodically during normal operation of the timepiece and do not permit the mobile to advance during backwards time setting of the timepiece causing the wheel to rotate in a second direction (S2) opposite to the first direction (S1). ## Claims ### Claim 1 Calendar mechanism for a timepiece, comprising: at least one mobile (22; 23) for driving an indicator, a wheel (1) which, during normal operation of the timepiece, is driven in a first direction (S1), and a lever (16) for actuating the mobile (22; 23), characterised in that it further comprises first and second cams (2, 3) driven by the wheel (1) and controlling the movements of the actuating lever (16), these first and second cams (2, 3) being arranged so that their relative angular position differs depending on the direction of rotation of the wheel (1) so that the movements of the actuating lever (16) cause the mobile (22; 23) to advance periodically during normal operation of the timepiece and do not permit the mobile (22; 23) to advance during backwards time setting of the timepiece causing the wheel (1) to rotate in a second direction (S2) opposite to the first direction (S1). ### Claim 2 (depends on 1) Calendar mechanism as claimed in claim 1, characterised in that the first and second cams (2, 3) are coaxial to the wheel (1). ### Claim 3 (depends on 2) Calendar mechanism as claimed in claim 2, characterised in that the connection between the wheel (1), the first cam (2) and the second cam (3) comprises an oblong opening (5) and a pin (4) engaged in the oblong opening (5). ### Claim 4 (depends on 3) Calendar mechanism as claimed in claim 3, characterised in that the oblong opening (5) is provided in the wheel (1), the pin (4) is carried by the first cam (2) and the second cam (3) is fixedly attached to the wheel (1). ### Claim 5 (depends on 1) Calendar mechanism as claimed in claim 1, characterised in that the second cam (3) controls the actuating lever (16) via a second lever (11). ### Claim 6 (depends on 5) Calendar mechanism as claimed in claim 5, characterised in that the pivot (17) of the actuating lever (16) is carried by the second lever (11). ### Claim 7 (depends on 1) Calendar mechanism as claimed in claim 1, characterised in that the first cam (2) controls the actuating lever (16) by means of a third lever (8). ### Claim 8 (depends on 7) Calendar mechanism as claimed in claim 7, characterised in that the connection between the actuating lever (16) and the third lever (8) comprises an oblong opening (18) and a pin (19) engaged in the oblong opening (18). ### Claim 9 (depends on 8) Calendar mechanism as claimed in claim 8, characterised in that the oblong opening (18) is provided in the actuating lever (16) and the pin (19) is carried by the third lever (8). ### Claim 10 (depends on 1) Calendar mechanism as claimed in claim 1, characterised in that the actuating lever (16) comprises at least one beak (20; 21) and is arranged so that during normal operation of the timepiece this beak (20; 21) periodically engages in a toothing of the mobile (22; 23) in order to cause this mobile to advance and so that the engagements of this beak in the toothing of the mobile (22; 23) during backwards time setting of the timepiece have no effect on the angular position of the said mobile. ### Claim 11 (depends on 10) Calendar mechanism as claimed in claim 10, characterised in that it comprises a device (28-36; 39-42) to cause the beak (20; 21) to automatically leave the toothing of the mobile (22; 23) before a correction of the position of the said mobile. ### Claim 12 (depends on 11) Calendar mechanism as claimed in claim 11, characterised in that the said device (28-36) can be actuated by a displacement of a winding stem (27) into a predetermined axial position. ### Claim 13 (depends on 11) Calendar mechanism as claimed in claim 11, characterised in that the second cam (3) controls the actuating lever (16) via a second lever (11), and wherein said device (28-36; 39-42) comprises means (35, 36; 42) for moving the second lever (11) away from the second cam (3), this distancing movement causing a displacement of the actuating lever (16) causing the beak (20; 21) to leave the toothing of the mobile (22; 23). ### Claim 14 (depends on 12) Calendar mechanism as claimed in claim 12, characterised in that the second cam (3) controls the actuating lever (16) via a second lever (11) and the pivot (17) of the actuating lever (16) is carried by the second lever (11), and wherein said device (28-36; 39-42) comprises means (35, 36; 42) for moving the second lever (11) away from the second cam (3), this distancing movement causing a displacement of the actuating lever (16) causing the beak (20; 21) to leave the toothing of the mobile (22; 23).