Montres Breguet S.a.

Jan Pittet

Marc Stranczl

Alain Zaugg

Davide Sarchi

Jean-Jacques Born

Thierry Conus

Eric Goeller

Jérôme Favre

Sylvain Marechal

Benoit Junod

Beat Gilomen

Patrick Ragot

Fabio Sciascia

Dave Mangin

Benoît Junod

Sylvain MARÉCHAL

A variable timepiece display mechanism includes a resilient hand with a drive pipe integral with a single-piece flexible strip including flexible segments joined at tips, a first segment thereof extends between the first pipe and a first tip. The mechanism also includes a driver for driving the pivoting of the pipe, and a stressor for stressing the first flexible segment in order to vary the position of the first tip relative to the output axis, as a function of the forces applied to the flexible strip. The drier and/or the stressor includes a first shaped gear train and/or a second shaped gear train in order to accelerate, stabilize the speed of, or slow at least the pipe over a part of the angular travel thereof.

Variable-geometry timepiece display mechanism with resilient hand

A variable timepiece display mechanism includes a resilient hand with two drive pipes integral with a one-piece flexible strip includes a tip or an index, with a driver for driving the pivoting of the pipe, and a stressor for stressing the strip so as to vary the position of the tip relative to the axis of the pipes, which includes an accelerator or decelerator device arranged such that it accelerates, or stabilizes the speed of, or slows down the first pipe and/or the second pipe over at least part of the angular travel thereof, which includes a device with a first differential gear on the drive gear train of the first pipe and/or a second differential gear on the drive gear train of the second pipe, and at least one cam forming an input of a differential gear.

The invention relates to a setting mechanism for a timepiece movement, including a setting gear train, a winder rod adapted to be moved from a first axial position termed a running position to a second axial position termed a setting position, a sliding pinion adapted to be moved from a first axial position in which the sliding pinion is disengaged from the setting gear train to a second axial position in which the sliding pinion meshes with the setting gear train, and a lever interengaged with the sliding pinion and adapted to pivot, when the winding rod is moved from a running position to a setting position and vice versa, in order to move the sliding pinion from the first axial position to the second and vice versa. The setting mechanism further includes, according to the invention, a device for immobilizing the setting gear train. This immobilizing device includes first and second immobilizing arms and an immobilizing wheel interengaged with the setting gear train. The first and second immobilizing arms are adapted, on the one hand, to the interengaged with the immobilizing wheel in a configuration termed locked in which the setting gear train is immobilized and, on the other hand, to be disengaged from the immobilizing wheel in a configuration termed unlocked in which the sliding pinion is free from meshing with the setting gear train. The immobilizing device includes to this end a locking/unlocking lever interengaged with the sliding pinion and adapted to cooperate with the first and second immobilizing arms in order to pass from the locked configuration to the unlocked configuration and vice versa when the winding rod is moved from a running position to a setting position and vice versa.

Setting mechanism for timepiece movement

Portable object provided with a mechanism for measuring atmospheric pressure, the atmospheric pressure measuring mechanism including an atmospheric pressure sensor whose geometric dimensions vary with atmospheric pressure fluctuations, the variations in the geometric dimensions of the atmospheric pressure sensor being applied to a device displaying a barometric tendency connected to the atmospheric pressure sensor via a coupling mechanism actuated by a user, the coupling mechanism being capable of being switched between a first position, in which the kinematic connection between the atmospheric pressure sensor and the barometric tendency display device is interrupted, and a second position in which the barometric tendency display device is kinematically coupled to the atmospheric pressure sensor.

Portable object provided with a device for measuring atmospheric pressure

The musical or striking watch includes a watch case, which is formed of a middle part and a back cover, provided with side apertures and removably secured in a sealed manner to the middle part. A crystal closes the case in a sealed manner. A timepiece movement is held inside the watch case and provided with a striking mechanism that can be actuated at determined times to produce notes or music. The watch further includes at least one removable acoustic radiating membrane, which is arranged in the watch case. The removable membrane includes, in a central position, a retaining member. This retaining member is arranged with play in a housing in an inner stop member of the back cover. Owing to the cooperation between the retaining member and the stop member, the bending of the membrane is limited following excess pressure or vacuum pressure according to environmental conditions.

Removable acoustic radiating membrane for a musical watch or striking watch and watch including the same

A timepiece wheel governor for regulating the pivoting speed (&#x3c9;) of a wheel set, about a pivot axis, including a pivoting inertia-block. It includes a spring to return this block towards this axis, and, when the wheel set pivots at a lower speed than a reference speed (&#x3c9;c), this block remains confined within a first volume of revolution, and, when the wheel set pivots at a higher speed than the reference speed (&#x3c9;c), this block is engaged, in one peripheral portion thereof, in a second volume contiguous with and external to the first one, this peripheral portion cooperating in this second volume with a regulator arranged to brake the wheel set and return the pivoting speed (&#x3c9;) thereof to the reference speed (&#x3c9;c), and to dissipate the surplus energy.

Governor for a timepiece wheel set or strike wheel set

A winding and time-setting control device for a timepiece movement including, connected in rotation, a movement stem secured in rotation to a sliding pinion driven in translation by a lever between winding and time-setting positions, and a control stem sliding between winding and time-setting control positions, actuating a pull-out mechanism. The mechanism includes a first pull-out piece including, about a first axis, an arm movable with the control stem, and a pivot cooperating with a complementary pivot of a second pull-out piece driving the lever and including an arm movable inside a housing in the movement stem. A timepiece incorporating a device of this type is also disclosed.

Winding and time-setting control device for a timepiece movement

The timepiece movement () includes a karussel () whose platform carries an escape wheel that cooperates with a balance (). The platform is driven from the time display mechanism associated with a time-setting mechanism (). The escape wheel is driven directly from the gear train. In addition to compensating for differences in rate due to gravity, the karussel of the invention proposes a new, complementary role: that of time indicator.

Timepiece movement with a karussel

The control stem device for a watch includes a first stem () rotating about its longitudinal axis and provided with means () for securing it to a manual control crown on the exterior of the watch, and a second stem (), substantially parallel and shifted in relation to said first stem and secured to an axially mobile sliding pinion () for selectively driving in rotation a mechanism for a first function () and a mechanism for a second function (), the first and second stems being connected in rotation by a transmission device (). The first stem is mounted to be axially mobile at least between an operating position associated with said first function and an operating position associated with said second function, so as to activate, by sliding between said positions, a pull-out mechanism () which cooperates with said sliding pinion () to make said pinion pass from one axial position to another, said sliding pinion () being meshed with the mechanism for the first function in one of its positions and with the mechanism for the second function in the other position. The first stem () slides in the first pinion () of the gear and can be removed. This device allows the control crown to be placed half way up the watchcase, in particular in the case of a watch with complications having a very thick movement.

Growing community of inventors

Le Lieu, Switzerland

Jan Pittet