Abstract: The timepiece movement is provided with an analog display device for an item of information whose value varies periodically or intermittently, this analog display device including an indicator for said information provided with a toothing and a mechanism for the periodic or intermittent driving of the indicator, this mechanism comprising a rotating wheel set whose pinion, in a meshing relationship with the toothing, is formed of two pins which are diametrically opposite relative to the rotational axis of the rotating wheel set, these two pins being configured to alternately penetrate successive hollows in the toothing and to form a self-locking system when the timepiece movement is subjected to shocks. Each of the two pins has, in a general plane of the toothing perpendicular to the axis of rotation of the rotating wheel set, a transverse profile having a first outer portion substantially in the arc of a circle centered on the axis of rotation.

Abstract: Arrangement of electrodes for a juxtaposed two digit display including a left digit and a right digit is disclosed. The right digit includes an upper electrode, a median electrode and a lower electrode. The right digit includes a lateral upper left electrode, a lateral lower left electrode, a lateral upper right electrode and a lateral lower right electrode. The left digit includes an upper electrode, a median electrode and a lower electrode. The left digit includes a lateral upper left electrode, a lateral lower left electrode, a lateral upper right electrode and a lateral lower right electrode. In the left digit, the upper electrode, the median electrode and the lower electrode are each formed of a first and second point-shaped electrode.

Abstract: An electronic clock mechanism includes an analog display device including a ring of dates and a stopwatch hand associated with a graduation of a small counter. The ring and hand are driven by a same electric motor via a permanent gear train, the hand being mounted on a wheel of the permanent gear train, the wheel arranged between a motor pinion and a movable element including a date driving wheel. The ring and date driving wheel respectively include two sets of teeth forming a permanent gear having a relatively large clearance to define a dead angle region for the date driving wheel as the ring is positioned by a jumper. The dead angle region is used to drive the stopwatch hand independently of the ring. The permanent gear train is arranged such that torque for positioning the rotor creates for the date driving wheel a blocking torque for shock-resistance.

Abstract: The timepiece movement is provided with an analogue display device for an item of information whose value varies periodically or intermittently, this analogue display device including an indicator for said information provided with a toothing and a mechanism for the periodic or intermittent driving of the indicator, this mechanism comprising a rotating wheel set whose pinion, in a meshing relationship with the toothing, is formed of two pins which are diametrically opposite relative to the rotational axis of the rotating wheel set, these two pins being configured to alternately penetrate successive hollows in the toothing and to form a self-locking system when the timepiece movement is subjected to shocks. Each of the two pins has, in a general plane of the toothing perpendicular to the axis of rotation of the rotating wheel set, a transverse profile having a first outer portion substantially in the arc of a circle centred on the axis of rotation.

Abstract: An electronic clock mechanism includes an analog display device including a ring of dates and a stopwatch hand associated with a graduation of a small counter. The ring and hand are driven by a same electric motor via a permanent gear train, the hand being mounted on a wheel of the permanent gear train, the wheel arranged between a motor pinion and a movable element including a date driving wheel. The ring and date driving wheel respectively include two sets of teeth forming a permanent gear having a relatively large clearance to define a dead angle region for the date driving wheel as the ring is positioned by a jumper. The dead angle region is used to drive the stopwatch hand independently of the ring. The permanent gear train is arranged such that torque for positioning the rotor creates for the date driving wheel a blocking torque for shock-resistance.

Abstract: Timepiece movement including a date display drive device formed of a display disc including a toothing, said drive device including driving means and a drive source. The driving means includes a wheel set including pins, having a toothed wheel and a pinion including pins, and an engaging wheel engaging said toothed wheel. The pinion with pins includes a pair of pins configured to be positioned on either side of any tooth of the toothing. The toothed wheel of the pin wheel and the engaging wheel respectively have complementary non-circular profiles. When the two pins are oriented in a tangential direction to the toothing, these two wheels have a first gear ratio that is lower than a second gear ratio between them when the two pins are in perpendicular alignment to said tangential direction.

Abstract: Timepiece movement including a date display drive device formed of a display disc including a toothing, said drive device including driving means and a drive source. The driving means includes a wheel set including pins, having a toothed wheel and a pinion including pins, and an engaging wheel engaging said toothed wheel. The pinion with pins includes a pair of pins configured to be positioned on either side of any tooth of the toothing. The toothed wheel of the pin wheel and the engaging wheel respectively have complementary non-circular profiles. When the two pins are oriented in a tangential direction to the toothing, these two wheels have a first gear ratio that is lower than a second gear ratio between them when the two pins are in perpendicular alignment to said tangential direction.

Abstract: Device with coaxial disengageable wheels for a timepiece movement including an input wheel, an output wheel, a hub, and a jumper mechanism including a spring and positioning elements defining a certain number of discrete angular positions of the input wheel with respect to the output wheel around an axis of rotation. The positioning elements including hollow elements and protruding elements, the spring being configured to apply an elastic force pushing the protruding elements against the hollow elements to couple the wheels to each other below a disengagement torque. The protruding elements and the hollow elements extend in the axial direction and the spring is configured to apply an elastic force in the axial direction.

Abstract: Timepiece lever for the transmission of motion between a transmitter wheel set and a receiver wheel set pivoting about distinct first and second axes of the lever which includes a pivoting plate carrying a transmission means remote from the first axis and of variable angular position relative to the first axis and which includes a control finger-piece or a transmission wheel set, the lever also including a frictional connection between a first friction surface of the transmitter wheel set and a second friction surface of the pivoting plate, the element carrying the first friction surface is elastic and the element carrying the second friction surface is elastic.

Abstract: Wristwatch including a case in or on which there is arranged a first open housing, a wristlet provided with one end arranged in the first open housing, and a fastening means for holding the end of the wristlet in the first housing. The fastening means includes a second housing opening onto the first housing and a fastening element arranged in the second housing and occupying one part of the first housing. The wristwatch further contains a means of retaining the fastening element.

Abstract: Device with coaxial disengageable wheels for a timepiece movement including an input wheel, an output wheel, a hub, and a jumper mechanism including a spring and positioning elements defining a certain number of discrete angular positions of the input wheel with respect to the output wheel around an axis of rotation. The positioning elements including hollow elements and protruding elements, the spring being configured to apply an elastic force pushing the protruding elements against the hollow elements to couple the wheels to each other below a disengagement torque. The protruding elements and the hollow elements extend in the axial direction and the spring is configured to apply an elastic force in the axial direction.

Abstract: The timepiece movement is provided with an analog device for displaying information whose value varies periodically or intermittently, this analog display device including, on the one hand, an indicator provided with a first toothing, and on the other hand, a mechanism for the periodic or intermittent driving of the indicator. The drive mechanism is formed by an irreversible transmission system which ensures a shock resistant function for the indicator. The display device further includes a positioning jumper for the indicator generating a positioning force on the first toothing, which is sufficient to precisely position the indicator in a plurality of discrete display positions, but considerably insufficient to ensure a shock resistant function for the indicator. Thus, the indicator can be driven with a relatively low torque; which therefore requires less energy and makes it possible to provide a drive mechanism with a lower gear reduction for the drive torque transmission ratio.

Abstract: Timepiece lever for the transmission of motion between a transmitter wheel set and a receiver wheel set pivoting about distinct first and second axes of the lever which includes a pivoting plate carrying a transmission means remote from the first axis and of variable angular position relative to the first axis and which includes a control finger-piece or a transmission wheel set, the lever also including a frictional connection between a first friction surface of the transmitter wheel set and a second friction surface of the pivoting plate, the element carrying the first friction surface is elastic and the element carrying the second friction surface is elastic.

Abstract: The timepiece movement is provided with an analogue device for displaying information whose value varies periodically or intermittently, this analogue display device including, on the one hand, an indicator provided with a first toothing, and on the other hand, a mechanism for the periodic or intermittent driving of the indicator. The drive mechanism is formed by an irreversible transmission system which ensures a shock resistant function for the indicator. The display device further includes a positioning jumper for the indicator generating a positioning force on the first toothing, which is sufficient to precisely position the indicator in a plurality of discrete display positions, but considerably insufficient to ensure a shock resistant function for the indicator. Thus, the indicator can be driven with a relatively low torque; which therefore requires less energy and makes it possible to provide a drive mechanism with a lower gear reduction for the drive torque transmission ratio.

Abstract: Arrangement of electrodes for a juxtaposed two digit display comprising a left digit and a right digit. The right digit comprises an upper electrode, a median electrode and a lower electrode. The right digit comprises a lateral upper left electrode and a lateral lower left electrode, and a lateral upper right electrode and a lateral lower right electrode. The left digit comprises an upper electrode, a median electrode and a lower electrode. The left digit comprises a lateral upper left electrode and a lateral lower left electrode, and a lateral upper right electrode and a lateral lower right electrode. In the left digit, the upper electrode, the median electrode and the lower electrode are each formed of a first and second point-shaped electrode.

Abstract: Wristwatch including a case in or on which there is arranged a first open housing, a wristlet provided with one end arranged in the first open housing, and a fastening means for holding the end of the wristlet in the first housing. The fastening means includes a second housing opening onto the first housing and a fastening element arranged in the second housing and occupying one part of the first housing. The wristwatch further contains a means of retaining the fastening element.

Abstract: The invention relates to a percussive tool having an oscillatory drive (3), the force of which is transmitted to a tool bit holder (25) by way of a drive member (17). Extending through the percussive tool is a longitudinal opening that allows a rod-shaped object, such as, for example, a guide wire, to be guided through the percussive tool. The tool bit holder (25) has a seat (34), which can receive the tool bit in different orientations. Moreover, the tool bit holder (25) is made of a combination of light metal and steel, which allows a reduction in acceleration forces and noise generation. A saddle-shaped coupling (24) is provided between the tool bit holder (25) and the drive member (17), which guarantees a tight fit.