Abstract: A timepiece glass, in particular a watch glass, wherein it comprises an optical device comprising at least one lens intended to enlarge an indication supplied by a timepiece, said lens comprising at least one aspherical face comprising at least one section passing through a vertical plane comprising an optical axis of vertical direction z, of which at least one outline can be defined by the following equation: z ? ( r ) = r 2 R ? ( 1 + 1 - ( 1 - ? ) ? ? r 2 R 2 ) + ? 4 ? r 4 + ? 6 ? r 6 + … in which R is the nominal radius of curvature, k is the constant of conicity, and ?(4,6, . . . ) is or are coefficient(s) of asphericity, and in which at least the constant of conicity k and/or at least one coefficient of asphericity is different from zero.

Abstract: Assembly screw (1) for the pivoting attachment of at least two horology components in a position of assembly, the assembly screw (1) comprising at least one guide portion (3) allowing one of the horology components to pivot, and at least one threaded portion (4) allowing it to be fixed to another horology component, wherein this screw comprises a shoulder (5) intended to come into abutment against this other horology component and a zone (10) of lower mechanical rigidity to reduce the contact pressure applied at the shoulder (5) of the assembly screw when the horology components are in the position of assembly.

Abstract: A timepiece glass, in particular a watch glass, wherein it comprises an optical device comprising at least one lens intended to enlarge an indication supplied by a timepiece, said lens comprising at least one aspherical face comprising at least one section passing through a vertical plane comprising an optical axis of vertical direction z, of which at least one outline can be defined by the following equation: z ? ( r ) = r 2 R ? ( 1 + 1 - ( 1 - ? ) ? ? r 2 R 2 ) + ? 4 ? r 4 + ? 6 ? r 6 + … in which R is the nominal radius of curvature, k is the constant of conicity, and ?(4,6, . . . ) is or are coefficient(s) of asphericity, and in which at least the constant of conicity k and/or at least one coefficient of asphericity is different from zero.

Abstract: Transmission device (100), for example for a watch mechanism (110), in particular for a winding train (100, 201) of a watch movement (120), including an input element (6) intended to be driven only in a first direction, an output element, a first mechanical connection arranged such that the displacement of the input element in a first direction causes the displacement of the output element in a second direction, and a second mechanical connection (9?, 9) arranged such that the displacement of the input element in the first direction causes the displacement of the output element in a third direction, the third direction being opposite the second direction.

Abstract: Assembly screw (1) for the pivoting attachment of at least two horology components in a position of assembly, the assembly screw (1) comprising at least one guide portion (3) allowing one of the horology components to pivot, and at least one threaded portion (4) allowing it to be fixed to another horology component, wherein this screw comprises a shoulder (5) intended to come into abutment against this other horology component and a zone (10) of lower mechanical rigidity to reduce the contact pressure applied at the shoulder (5) of the assembly screw when the horology components are in the position of assembly.

Abstract: Transmission device (100), for example for a watch mechanism (110), in particular for a winding train (100, 201) of a watch movement (120), including an input element (6) intended to be driven only in a first direction, an output element, a first mechanical connection arranged such that the displacement of the input element in a first direction causes the displacement of the output element in a second direction, and a second mechanical connection (9?, 9) arranged such that the displacement of the input element in the first direction causes the displacement of the output element in a third direction, the third direction being opposite the second direction.

Abstract: The invention relates to a watch strap strip (1) reinforcement (2) intended to be housed in a casing (3) of the strip made from a flexible material, wherein the reinforcement includes a linking element (4) mechanically connecting: an element (10) for fixing the strip to the watch case to an element (9) for fixing the strip to a closure element.

Abstract: An assembly device (3) for pivotally attaching at least two parts (M1, M2), comprising a screw (4) designed to be screwed into a first piece (M1) and carrying a pivoting guide pin (5) of a second part (M2), wherein this assembly device (3) comprises at least one elastic ring (6) able to work in conjunction with an element blocking one of the two parts (M1, M2), so as to prevent accidental axial movement of the assembly device (3).

Abstract: The invention relates to a watchstrap (1) including a plurality of mutually hinged elements (7) which each comprise at least one link (2, 3, 4, 4?) and at least one recess consisting of at least one hole (15, 15?) for receiving therein a linking member (10, 11, 12). Next to the open ends (16) of at least some of said holes (15, 15?), a clearance (20) of the linking member (10, 11, 12) is provided, preventing any contact at said point between the latter and said links (2, 3, 4, 4?).

Abstract: An assembly device (3) for pivotally attaching at least two parts (M1, M2), comprising a screw (4) designed to be screwed into a first piece (M1) and carrying a pivoting guide pin (5) of a second part (M2), wherein this assembly device (3) comprises at least one elastic ring (6) able to work in conjunction with an element blocking one of the two parts (M1, M2), so as to prevent accidental axial movement of the assembly device (3).

Abstract: A bracelet strand (1) for a wristwatch has a first end (2) suitable for a connection to a watchcase (29). A comfort pad (10) is arranged on the inner surface of the bracelet strand (1) towards this first end (2). This comfort pad (10) has a longitudinal opening (15).

Abstract: The invention relates to a watch strap strip (1) reinforcement (2) intended to be housed in a casing (3) of the strip made from a flexible material, wherein the reinforcement includes a linking element (4) mechanically connecting: an element (10) for fixing the strip to the watch case to an element (9) for fixing the strip to a closure element.

Abstract: This bracelet comprises a plurality of articulated elements (1) in which one transverse edge of each element is interlocked in a transverse edge of an adjacent element, a transverse passageway passing at least partially through the adjacent interlocked portions in order to form a bearing (7) in which an articulation member (10) is engaged and is held at least one end of the said transverse passageway. The mid-portion of the said articulation member (10) comprises at least one O-ring placed on the portion of the said articulation member (10) situated inside the said bearing (7) and close to its ends and in jointed contact with the wall of the said transverse passageway.

Abstract: A bracelet strand (1) for a wristwatch, comprising a first end (2) suitable for a connection to a watchcase (29), which comprises a comfort pad (10) arranged on the inner surface thereof towards this first end (2) and wherein this comfort pad (10) comprises a longitudinal opening (15).

Abstract: This bracelet comprises a plurality of articulated elements (1) in which one transverse edge of each element is interlocked in a transverse edge of an adjacent element, a transverse passageway passing at least partially through the adjacent interlocked portions in order to form a bearing (7) in which an articulation member (10) is engaged and is held at least one end of the said transverse passageway. The mid-portion of the said articulation member (10) comprises at least one O-ring placed on the portion of the said articulation member (10) situated inside the said bearing (7) and close to its ends and in jointed contact with the wall of the said transverse passageway.

Abstract: The invention relates to a watchstrap (1) including a plurality of mutually hinged elements (7) which each comprise at least one link (2, 3, 4, 4?) and at least one recess consisting of at least one hole (15, 15?) for receiving therein a linking member (10, 11, 12). Next to the open ends (16) of at least some of said holes (15, 15?), a clearance (20) of the linking member (10, 11, 12) is provided, preventing any contact at said point between the latter and said links (2, 3, 4, 4?).