Abstract: A display system for a timepiece is disclosed. The system includes a mobile arranged to be driven by a drive source by first teeth provided on the mobile. The mobile includes second teeth including a teeth module of less than 0.05 mm, the second teeth being arranged so as to drive a display member either directly or indirectly.

Abstract: Mechanical oscillator for a timepiece including a balance (10) and a hairspring (12). The balance (10) and the hairspring (12) are produced from the same material. This material is non-magnetic and has a very low coefficient of thermal expansion.

Abstract: A clockwork movement includes at least two control elements which are movable with respect to the frame thereof, are used for interacting with the same external control member in response to the activation thereof and are positioned remotely to each other in the direction of the clockwork movement thickness. The clockwork movement has an intermediate connecting unit which is rotatable about an axis substantially extending in the direction of the clockwork movement thickness, pivotally mounted on the clockwork movement frame element and provided with a reception area which is distant from the axis and exposable to a force produced in response to the control member activation. The intermediate unit also includes at least two contact areas each of which is used for producing a force on the corresponding control element and which are located on both sides of the reception area in the direction of the axis.

Abstract: A clockwork movement includes a control member actuatable by a control lever in response to a user's action and having the form of a column wheel. The control member is rotatably mounted on the clockwork movement frame around an axis X, perpendicular thereto, for controlling first and second mechanisms exhibiting at least one movement function such as chronograph or alarm function. The control member includes rotationally fixable first, second and third parts which are mounted on a shaft at first, second and third levels, respectively, in a direction of the axis X for interacting with the control lever and for controlling the mechanisms. The shaft which is pivotally mounted with respect to the frame is arranged in at least two bearings, which are positioned remotely to each other for ensuring the shaft good stability, whereas the second and third parts are located on the both parts of the frame.

Abstract: The invention concerns a chronograph-type watch provided with a movement (29) comprising: current time display means, measured time display means, a time base designed to regulate said display means, a control device (34, 40) for starting and stopping the measured time display means, a reset device for resetting the measured time display means when time measurement is over. The watch is provided with a case (10) for housing the movement (29) and comprising at least one slide (24) for controlling the control and reset devices. Said watch further comprises a locking device (32, 52) designed to co-operate with the control device (34, 40) to enable or disable it, and an actuating member (28, 44) designed to de accessible outside the case (10), for controlling device locking device (32, 52).