Abstract: The piece of jewellery comprises at least two rings (2, 4) that can nest inside each other and have different diameters. These rings are assembled to each other so as to pivot relative to each other. The piece of jewellery can thus pass from a configuration wherein the rings are tilted to a configuration wherein they are nesting, such that the surface of the smaller ring (2) is concealed. The piece of jewellery further comprises indexing means (26, 11c) comprising a pin (26) secured to one of the rings (29) and which is arranged for cooperating with the edge (30) of an elongated aperture (11c) made in another ring (4), so as to immobilise the rings selectively in a plurality of relative positions.

Abstract: The watch with a metallic case including an electronic module for storing data, which is mounted in an external cavity in the back cover of a case. The module can communicate via broadcast signals with a read and/or write apparatus for said data. The module includes a base on which are mounted an integrated circuit chip having at least two bumps and a coil acting as a transmission and/or reception antenna. The coil is formed by an electrically conductive wire having two ends respectively connected to said bumps of said integrated circuit chip. The coil surrounds a space in which said chip is placed. The dome-shaped base of the electronic module is a metallic element that conducts magnetic flux to insulate the module coil magnetically from the metallic case during data communication between a read/write apparatus and said module. The base of the module can be covered by a protective cover.

Abstract: The invention concerns a timepiece including a case (10) and a crystal (22) together defining a housing (18) for a movement (20), and further including an element that is mobile in rotation (30) actuated by a control member (36) including a stem (42) of longitudinal axis AA, passing radially through said case (10), a crown (44) mounted on a first proximal end of said stem and a pinion (46) fixedly mounted in rotation on a second distal end of said stem (42). The control member (36) is fitted with a part (48) for axially securing said pinion (46) on said stem (42), arranged on the proximal side of said stem (42), said securing part (48) including: a first slit ring (62) mounted so as to be locked axially and radially on a first of the pinion (46)/stem (42) elements, and means for axially locking the second of the pinion (46)/stem (42) elements, secured to said slit ring (62).

Abstract: The invention concerns a bracelet or wristband of adjustable length, including: a first link including two ends defining first and second fixed points of attachment, a stopper including a through hole that allows the link to pass therethrough, releasable means for locking the link in the hole, and means for securing one of the ends of the link, and a securing element associated with the first point of attachment, the link being on one hand secured to the stopper by the second fixed point of attachment using the securing means, and on the other hand engaged in the hole so as to be able to be locked at a variable locking point, by the locking means, or to slide therein when the locking means are released, and the link further comprising, a variable point of attachment located substantially half-way between the second fixed point of attachment and the variable locking point (42).

Abstract: The device consists in compensating for the distortion of the characters marked on the dial caused by a lens, by writing the characters with a reverse pin cushion or barrel distortion.

Abstract: The invention concerns a link element (12) including one strand (14) which extends longitudinally in a horizontal plane and one front end of which (22) includes a device for attachment to a watch (10), the attachment device including: a casing (24) which is secured to the front end (22) of the strand (14); two coaxial securing pins (26) of transverse axis (A) which are received in two associated lateral housings (28) of the casing (24), a free end of each pin (26) being pivotably received about the transverse axis (A) in one of the two opposite orifices of the watch (10), characterized in that the casing (24) includes a bottom plate (32) and a top back plate (34), and in that the front end (22) of the strand (14) includes a holding pin (44), which is fitted vertically into a sink (46) of the bottom plate (32), the top back plate (34) being secured to the bottom plate (32) trapping the front end (22) of the strand (14) such that the casing (24) is secured to the strand (14).

Abstract: The links (1) are formed by a set of parts (3, 4, 6, 9, 15) including at least two caps (3, 4) including, on the one hand, means for assembling (13, 14, 15) their feet (3b, 4b) to hold, between their heads (3a, 4a) a decorative casing element (9), and on the other hand, locking means (6, 16) at the junction of their feet (3b, 4b) for immobilising each link (1) on the connecting member. The preferred embodiment includes a rigid tube (15) assembling the feet (3b, 4b) and holding a deformable insert locking the connecting member.

Abstract: The invention concerns a non-extending hinged bracelet including a plurality of links (6, 6?) hinged one after the other, each of the links including on one side a male hinge element and on the other side a female hinge element, the male hinge element of one link (6) being inserted in the female hinge element of the next link (6?) to form a hinge (1), said hinge elements being traversed by a pin forming the articulation of the hinge (1), a U-shaped part (14) which covers said hinge (1) including branches (16) which are engaged on either side of the hinge (1) and which have holes (18) in which the ends of the pin are engaged, said bracelet being characterized in that a cover (12) extending between two adjacent links (6, 6?) is arranged between the hinge (1) and the U-shaped part (14).

Abstract: The bezel (1) is interchangeable via a bayonet device. The shoulder (11) of the middle part (12) is provided with a circular groove (14) and at least two sinks (15) opening out partially into said groove (14). The bezel (1) includes at least two feet (2) positioned to engage in the sinks (15), said feet (2) each including a notch (4) open radially at the emergence of the sinks (15). A locking ring (20) provided with an outer member (21) for rotational manipulation, is positioned in the groove (14), one edge (23) of said ring (20) having a substantially equal thickness to the aperture of the notches (4) and including recesses (24) for the feet (2) to pass and the other edge (25) including a gorge (26) facing a gorge (16) of the middle part (12), the two gorges (16; 26) housing a click spring (30) of the ring (20).

Abstract: There is disclosed a wristband for a portable electronic instrument including at least a first wristband strand (50) including outer and inner faces and one end (50A) of which is intended to be fixed to a case of said portable electronic instrument, this first wristband strand (50) including, housed between said outer and inner faces, an electric conductor including a conductive plate (10) of elongated shape arranged longitudinally in said first wristband strand (50). The conductive plate (10) includes at least one lug (20) cut into its thickness and bent along a longitudinal line in the direction of one of said outer and inner faces of the first wristband strand (50). The first wristband strand (50) further includes at least one orifice (51) arranged transversely between said outer and inner faces of the first wristband strand (50) and arranged for electrically accessing said at least one lug (20). There is also disclosed a method for manufacturing such a wristband.

Abstract: The device consists in compensating for the distortion of the characters marked on the dial caused by a lens, by writing the characters with a reverse pin cushion or barrel distortion.

Abstract: The invention relates to watches, generally wristwatches, whose cases incorporate electronic modules for storing information that comprise an integrated circuit connected to an antenna consisting of a coil and are able to communicate by radio signals with a reading and/or writing device adapted at least to read the information contained in a memory of the integrated circuit and often also adapted to delete or modify at least some of that information and to add other information. To eliminate the drawbacks of prior art watches in which the module is inside the case (complicated fabrication or new design of the watch, increased volume thereof) or to reduce the importance of those drawbacks (attenuation and/or distortion of the signals sent and received by the coil), in the watch of the invention the electronic module (14) is housed at least for the most part in a cavity (13) in the back (3) of the case (1) open towards the outside.

Abstract: The invention concerns a watch including a case fitted with a glass and containing display means able to be observed through the glass, characterised in that said glass is made from a plate formed of a fibre optic group.

Abstract: The invention relates to watches, generally wristwatches, whose cases incorporate electronic modules for storing information that comprise an integrated circuit connected to an antenna consisting of a coil and are able to communicate by radio signals with a reading and/or writing device adapted at least to read the information contained in a memory of the integrated circuit and often also adapted to delete or modify at least some of that information and to add other information. To eliminate the drawbacks of prior art watches in which the module is inside the case (complicated fabrication or new design of the watch, increased volume thereof) or to reduce the importance of those drawbacks (attenuation and/or distortion of the signals sent and received by the coil), in the watch of the invention the electronic module (14) is housed at least for the most part in a cavity (13) in the back (3) of the case (1) open towards the outside.

Abstract: There is disclosed a device (1, 34) for positioning a first element (24) with respect to at least a second element (25) by means of a resilient locking member made in a single piece and having two ends (2, 3) connected by a bar (4) capable of being resiliently deformed in its axial direction (5). The longitudinal resilience of the bar (4) is due to the fact that it includes a plurality of apertures (11) over its length, said apertures (11) being located alternately on either side of a median plane (14) of the bar (4). This locking member can easily be manufactured in the form of a moulded plastic part.

Abstract: The reversible watch includes first (1) and second (2) cases mounted back-to-back and each having a back cover and securing elements for securing it to the other case in a way which the user can dismantle. In a particular embodiment, each of the cases includes horns (5) through which bars (8, 9) pass. The bars are also used as means for securing the first case to the second and as means for securing each of the ends (12, 13) of the wristband (15) to the assembly formed by said first and second cases. In another embodiment, the back covers of the two cases include elements for securing them to each other, and the assembly of the two cases is mounted in a reversible manner on a support secured to a non-reversible wristband.

Abstract: The bezel (2) allows the same reading direction to be kept for the indications (20) carried by a ring (4) able to rotate freely on a base (6) to which it is affixed to bring a selected indication (20) opposite a determined marking of the base (6) or of a dial (3). The indications (20) are marked on the outer surface of studs (10) each kept free in rotation about their rotational axis (10a) in a housing (30) provided through the thickness of the ring (4) and opening onto the base (6).

Abstract: The continuously variable electromagnetic transmission comprises a commutator-less, axial flux dynamoelectric machine (3) provided with an input shaft (2) and an output shaft (4), and means (20) for controlling and supplying electric power at a variable frequency to said machine. The dynamoelectric machine comprises a stator (16), a first rotor (12) which is connected to the input shaft, and a second rotor (15) which is connected to the output shaft and arranged in such a way that it can interact with the first rotor and the stator, whereby the two rotors and the stator are formed by discoid elements. The transmission comprises means for axially displacing at least one of the discoid elements in order to modify the width of the axial air gap between said element and an adjacent discoid element, whereby the magnetic field can be regulated by variations in said gap and the two rotors can be mechanically coupled to each other.