A centralized control unit for controlling an arm moving in a clockwise direction and in a counter-clockwise direction includes an arbor about which the centralized control unit pivots. The arm is integrally mounted on a toothed actuating wheel as an assembly, and the assembly is mounted to freely rotate about the arbor. The centralized control unit also includes a wheel to control the arm in the clockwise direction, a wheel to control the arm in the counter-clockwise direction, and a power wheel kinematically connected to an independent barrel to drive the arm.

A fastening method is for fastening at least one display element of a watch using a fastening device. Indeed, the at least one display element is fastened thanks to the fastening method via the fastening device. For this, it is necessary to provide the at least one display element, at least one movement, and at least one split ring, then to deform the at least one split ring so as to adapt to the at least one display element before fastening the at least one split ring with the at least one display element to the at least one movement.

A horological assembly (10) including a watch display module (1) and a plate (2) of a horological movement of the watch, the display module (1) being provided with at least one display component (4) and with a protective element (3) including an open recess in which is arranged the at least one display component (4) provided with a visible face (8) positioned facing a completely or partially transparent bottom of this recess, the protective element (3) including tabs (6a, 6b) helping to arrange this element in the plate (2).

A timepiece display device including a first display element and a second display element superimposed above a fixed part including a main bearing surface, this second display element is subjected to opposing forces exerted, on the one hand by lower return means which tend to bring the second display element closer to the first display element, and, on the other hand, by upper return mechanism which tends to move the second display element away from the first display element without contact between them or else by mechanical spacing device which includes a bearing surface providing a stop bearing function on a stop surface of the second display element, to limit the travel from the second display element to the first display element.

Disclosed is a display mechanism for a timepiece movement including a first display wheel and a second display wheel, which are arranged to be coplanar, characterised in that the first and second display wheels are further arranged to be pivoted with respect to each other by way of at least one ball bearing.

A time-indicating method includes at least of a time-indicating device for the hours and an additional time-indicating device for the minutes, wherein the time-indicating devices are indicating elements with a bearing point, and the bearing point of each time-indicating device is arranged on a common axis. An additional display element is rotatably arranged on the common virtual axis, and each display element has a slot extending from the outer circumference to the bearing point such that the slots rotate one below the other and independently of one another, wherein one, two, or three display elements are moved in an alternating manner via a setting device.

Disclosed is a mechanical movement including an information display device including at least one indicator member for the information, mounted pivoting about a pivot axis A. The movement encloses a cavity receiving at least the indicator member, the cavity being arranged so that the indicator member is housed entirely inside the movement. The movement includes at least one mobile arranged pivoting coaxially with the pivot axis A and including an outer peripheral toothing, the mobile being housed in the cavity and arranged to carry the indicator member. The mobile includes a felloe including the outer peripheral toothing and defining an inner opening, the felloe carrying an arm passing radially through the inner opening in order to be mounted pivoting on the pivot axis A, the indicator member being represented on the arm. Also disclosed is a timepiece including such a mechanical movement.

A Moon phase and Earth phase display device (100) for a horological movement, which device includes a display (110) including a plurality of graphical representations (120) symbolising respectively different successive phases of a celestial body, a dial (130) provided with two apertures (131) arranged so as to concomitantly display two diametrically opposed graphical representations (120), one of which symbolises a Moon phase and the other of which symbolises an Earth phase, and a drive mechanism (140) configured to drive the display (110) in sequential movement.

There are provided an information display mechanism, a timepiece movement, and a timepiece each capable of achieving a reduction in space. The information display mechanism includes a display wheel which has a plurality of inner teeth, on which information is displayed, and which has a ring-like shape, a driving wheel having a plurality of tooth parts configured to mesh with the inner teeth, and a drive section configured to rotate the driving wheel. The driving wheel is configured to rotate in a state in which the tooth parts and the inner teeth mesh with each other to thereby rotate the display wheel. The display wheel is provided with a regulatory protruding part configured to regulate mesh with the driving wheel. The drive section is configured to rotate the driving wheel in a first direction and a second direction opposite to the first direction.