Abstract:
Regulating members for a mechanical timepiece, specifically a system based on magnetic interaction between a resonator, in a form of a tuning fork for example, and an escape wheel, as a magnetic escapement. In the system plural areas of magnetic interaction between the resonator and the escape wheel are arranged such that torques produced at the escape wheel by the interactions compensate each other if the escape wheel is not synchronized at the frequency of the resonator. This results in negligible torque in the escape wheel when the escape wheel rotates slowly in a direction of an arrow or opposite direction. This allows the timepiece to start with a low mainspring torque and without any start procedure or device and provides better resistance of the timepiece against a loss of synchronization in event of a shock.
Abstract:
Timepiece resonator oscillating at a natural frequency, comprising one oscillating member and oscillation maintenance means, this oscillating member carrying a regulator oscillating at a regulation frequency comprised between 0.9 times and 1.1 times the value of an integer multiple greater than or equal to 2 of the natural frequency, this resonator is included in a timepiece movement for a timepiece, particularly a watch, and this regulator imposes a periodic modulation of the resonant frequency and/or quality factor and/or point of rest of this resonator.
Abstract:
The timepiece comprises means for indicating the sunrise and sunset taking into account seasonal variations (17, 27). These means comprise a sphere (17) representing the Earth, a shell (27) arranged concentrically to the sphere and arranged to delimit a part of the globe where it is night time from another part where it is daytime by indicating the position of the Earth's terminator. The shell can pivot around the globe along two perpendicular axes (X-X, Y-Y). The shell is driven by the movement in order to revolve at the rate of one revolution every 24 hours around the polar axis (X-X). A differential mechanism (50) is controlled by a year cam (72) that has a profile representing the inclination of the sun in relation to the equatorial plane. The differential mechanism controls the inclination of the shell around the axis (Y-Y) by means of a drive shaft (35) concentric to the polar axis (X-X).
Abstract:
The wearable device incorporates a device for measuring the ambient temperature, which comprises an infrared sensor. In an ambient temperature measurement mode a control circuit activates the infrared sensor several times so that it can supply a plurality of measurement signals over a certain period of time. A circuit for processing measurement signals is then arranged in order to supply temperature values corresponding to at least a portion of the measurement signals and to take a mean for at least a portion of these temperature values to obtain an average temperature value that is considered to be representative of the ambient temperature. The invention also relates to a method for measuring the ambient temperature that can be implemented by means of this wearable device.
Abstract:
Method for manufacturing an electroformed timepiece component: the same first alloy including a first precious metal is selected to make both functional inserts and an electroformed shell; these inserts are made; an electroforming substrate having a complementary profile to the inner profile of this component is formed in a second sacrificial material; these inserts are inserted into housings made on this substrate, to form an equipped sacrificial substrate, which is provided with the resists necessary to obtain, by means of an electroforming process, a bare electroformed component, with deposition of material on this substrate, acting as a core to form this electroformed shell, and on each accessible surface of each insert to secure the insert to this electroformed shell; then this sacrificial substrate is destroyed and all of these resists are removed.
Abstract:
The present invention relates to a method of making a timepiece plate. This method is characterized in that it includes the following steps: a) taking (A1, A2) the material forming the plate including at least one metallic element; b) forming (B1, B2) the plate; c) cooling (C) everything so as to obtain the timepiece plate in an at least partially amorphous state; and d) retrieving (D) the plate.
Abstract:
The invention relates to a device for assembling a casing ring in a watch case middle including bearing surfaces on the inner wall thereof, the casing ring including two housings opening in the lateral face of the casing ring, and in the upper or lower face of the casing ring.The device includes a locking part, capable of pivoting about a vertical axis of rotation passing through said upper or lower opening from a first position, in which the locking part is housed in the housing, to a second position, in which the locking part protrudes and abuts against a bearing surface of the inner wall of the case middle so as to hold said casing ring in said case middle.According to the invention, one locking part is snap-fitted in each of the housings and pivots about the vertical axis of rotation.The invention also concerns a watch fitted with such an assembly device.
Abstract:
Set of luminous display hands for a portable object including a frame housing an electrical energy supply source including a first and a second terminal, the set of luminous display hands including at least a first and a second luminous display hand made of an electrically non-conductive material and in which a hole is arranged for the passage of a drive arbor, the drive arbor of the second luminous display hand being arranged concentrically inside the drive arbor of the first luminous display hand, each of the first and second luminous display hands carrying a first, respectively a second light source which emits light, the first and second light sources each including a first and a second pole, wherein, depending on whether the light sources are mounted in parallel or in series, the first pole or the second pole of the second light source is connected to the first pole of the first light source by contact between the first and second luminous hands.
Abstract:
A watch or timepiece regulating member includes a balance, a balance-cock, at least one light energy source, and at least one balance spring attached between the balance and the balance-cock. The balance spring is made of quartz or of glass or of ceramic or is partially transparent to visible and/or ultraviolet wavelengths or made of an at least partially amorphous material and transmits and diffuses light emitted by the light energy source.
Abstract:
Method for maintaining and regulating the frequency of a timepiece resonator mechanism (1) around its natural frequency (ω0).A regulator device (2) acts on said resonator (1) with a periodic motion which requires a periodic modulation of at least the resonant frequency of said resonator (1), by requiring at least a modulation of the active length of a spring comprised in said resonator mechanism (1), with a regulation frequency (ωR) which is comprised between 0.9 times and 1.1 times the value of an integer multiple of said natural frequency (ω0), said integer being greater than or equal to 2 and less than or equal to 10.