Abstract:
The invention relates to a timepiece or piece of jeweler comprising an alloy containing at least 750 wt.-% gold, characterised in that the alloy comprises at least 200% copper, 4%-35% palladium and 1%-16% indium.
Abstract:
A barrel for timepiece movement, comprising a barrel shaft (20) around which is arranged, in a rotationally mobile manner, an assembly comprising a drum (30) and a cover (40) delimiting a housing (50) for receiving a barrel spring (51), the drum (30) and the cover (40) each having a wall (31, 41) extending from a peripheral end (34, 44) of the barrel to a central end of the barrel at the level of the barrel shaft (20), wherein at least a part of at least one of said walls (31, 41) has a variable thickness which increases continually with distance away from the peripheral end of the barrel.
Abstract:
The invention relates to a timepiece or piece of jewelry comprising an alloy containing at least 750 wt.-‰ gold, characterised in that the alloy also contains copper, palladium and indium, the sum of the concentrations of palladium and indium being less than or equal to 35‰, or less than or equal to 30‰, or even less than or equal to 25‰, and/or the sum of the concentrations of palladium and indium being between 15‰ and 35‰, or between 20‰ and 35‰, or even between 25‰ and 33‰.
Abstract:
The assembly device is intended for the pivoting attachment of at least two components (M1, M2). It comprises a screw (4) intended to be screwed into a first component (M1) and bearing a guide pin (5) guiding the pivoting of a second component (M2). According to the invention, the pin (5) comprises at least one rotation-prevention zone (540) having a shape designed to collaborate with a zone of corresponding shape of the first component (M1), so as to prevent said pin from rotating.
Abstract:
Method for engraving a component (1; 3) involving application to the component of a laser beam (5) the pulses of which each last less than one picosecond, so as to machine or remove material from the component and achieve coloration of the surface (6) in the bottom of the machining
Abstract:
A torsion resonator comprises an elongated torsion bar made in one flat piece with anchor-shaped ends supporting masses and an enlarged median zone at one side of which it is fixed by an elastically deformable branch to the bottom plate of a timepiece. An electrical transducer maintains torsional oscillation of the resonator and the relatively high torsional moment of inertia of the median zone compared to the rest of the bar prevents torsional efforts being transmitted to the supporting branch. Cooperating parts at the ends of the torsion bar and on the plate limit the amplitude of displacement of the torsion bar about the elastic branch.
Abstract:
A digital display timepiece having a panel of display elements which change their optical properties when electrically excited, an electronic circuit, the outputs of which are connected to the display elements, and a time base controlling the logic circuit, such that excitation of various sub-assemblies of said display elements controlled by the logic circuit displays the desired time, where the logic circuit and the display panel are so connected as to constitute a monolithic unit having a minimum number of input connections linking the output of the time base to the logic circuit.
Abstract:
Timepiece driving device (100), in particular for an instantaneous jump calendar system, the device including; an input mobile (13); a main cam (11) having a main cam profile, and connected to the input mobile either (i) with angular backlash or (ii) via a unidirectional coupling; an auxiliary cam (12) connected to the input mobile, and having an auxiliary cam profile; a cam follower (21) adapted to cooperate with the main cam profile and/or with the auxiliary cam profile; and an energy accumulator (22) elastically biasing the cam follower toward the main cam profile and toward the auxiliary cam profile, the timepiece driving device (100) being arranged so that the cam follower (21) comes substantially into contact with the auxiliary cam profile immediately at the end of the driving of the main cam (11) by action of the energy accumulator (22) on the main cam (11) via the cam follower (21).
Abstract:
The invention relates to a method of manufacturing of a watch component, comprising the steps consisting in: (10) forming a blank (200E1), particularly by injection, including at least one base surface (210) and at least one projecting portion (220) projecting from the base surface (210), (20) forming at least one coating layer (250) covering at least a part of the base surface (210) and/or over at least a part of the projecting portion (220), (30) removing by laser ablation at least a part of said at least one coating layer (250). (40) texturing by laser processing at least a part of the base surface (210) and/or at least a part of the projecting portion (220), and/or at least a part of the at least one coating layer (250).
Abstract:
Component, in particular a timepiece component, which has at least one porous core that includes a first material or based on a first material, having a relative density less than or equal to 80%, or less than or equal to 60%, or less than or equal to 50%, of the relative density of the first material in solid form, the at least one porous core having at least one area for which its porosity at its surface is lower than its porosity away from its surface.