Abstract: A water-resistant watch case of a diving watch, includes at least one back mounted on a lower side of a middle part, and a crystal mounted on an upper side of the middle part. The crystal includes an annular peripheral surface to be fastened with an amorphous metal gasket on an inner annular surface that is complementary in shape, on the upper side of the middle part. The annular peripheral surface of the crystal is inclined towards the inside of the watch case at a determined angle less than 90° relative to a central axis perpendicular to a plane of the watch case to distribute stresses between the crystal and the middle part due to the water pressure during a dive. The annular peripheral surface and the inner annular surface are conical in shape.

Abstract: The stem-crown of a water-resistant watch case includes a tubular stem inserted into a tubular opening of a middle part of the watch case, and a crown including a first portion connected in part to the stem and a second handling portion. The first portion includes an annular contact surface inclined at less than 90° with respect to a longitudinal central axis of the stem-crown starting from the first portion towards the outside of the second portion. In a rest position, the first portion is in contact against an annular receiving surface of the middle part of complementary shape to one end of the tubular opening towards the outside. The crown further includes a washer under a bearing part of the first portion and contacting the stem, being configured to bear in an annular slot of the middle part between the tubular opening and the annular receiving surface.

Abstract: The water-resistant watch case includes at least one crystal mounted on an upper side of a middle, a fastening gasket being disposed between an upper annular inner wall of the middle and an upper annular outer wall of the crystal. The crystal includes an annular peripheral surface below the upper annular outer wall inclined at a defined angle smaller than 90° in relation to an axis perpendicular to a plane of the watch case to come into direct contact against an annular inner surface of the middle inclined at an angle similar to the inclination of the annular peripheral surface and below the upper annular inner wall of the middle. The annular peripheral surface and/or the annular inner surface of the middle comprise a domed contact portion for a contact on an annular contact line between the two surfaces.

Abstract: A method for manufacturing an external component for horology or jewellery made of a composite material including a reinforcement formed of a preferably perforated structure and a matrix composed of a synthetic material, the method including the successive steps consisting in: a) making a 3D file of the reinforcement, b) forming the reinforcement by additive manufacturing, c) embedding all or part of the reinforcement in the synthetic material. An external component for horology or jewellery can be made of a composite material including a matrix composed of a synthetic material and a reinforcement having a perforated structure obtained by additive manufacturing.

Abstract: A water-resistant watch case of a diving watch, includes a back mounted on a lower side of a middle part, and a crystal mounted on an upper side of the middle part. The crystal includes an annular peripheral surface mounted by a first portion of an annular gasket made of amorphous metal on an inner annular surface that is complementary in shape, on the upper side of the middle part. A second portion of the gasket on the first portion of the gasket maintains the crystal against the middle part. The annular peripheral surface of the crystal is inclined towards the inside of the watch case at an angle less than 90° relative to a central axis perpendicular to the plane of the watch case to distribute stresses between the crystal and the middle part due to the water pressure.

Abstract: A transponder for securing a product displayed in a shop. The transponder includes two blocks each including a contact surface, the contact surfaces being positioned face to face, the blocks being connected to each other by an adjustable connection, that allows to manually adjust the moving closer together or farther apart of the blocks with respect to one another, thus allowing the transponder to be attached to a suitable element of the product, by gripping the element between the contact surfaces of the blocks, one of the blocks including wireless detection and transmission equipment, which allows the remote management of the presence of the transponder on the suitable element.

Abstract: The stem-crown of a water-resistant watch case includes a tubular stem inserted into a tubular opening of a middle part of the watch case, and a crown including a first portion connected in part to the stem and a second handling portion. The first portion includes an annular contact surface inclined at less than 90° with respect to a longitudinal central axis of the stem-crown starting from the first portion towards the outside of the second portion. In a rest position, the first portion is in contact against an annular receiving surface of the middle part of complementary shape to one end of the tubular opening towards the outside. The crown further includes a washer under a bearing part of the first portion and contacting the stem, being configured to bear in an annular slot of the middle part between the tubular opening and the annular receiving surface.

Abstract: A water-resistant watch case of a diving watch, includes at least one back mounted on a lower side of a middle part, and a crystal mounted with a fastening gasket on an upper side of the middle part. The back includes an annular bearing surface for coming into contact with an inner annular surface of the middle part of a shape complementary to the bearing surface during mounting of the back on the middle part. The annular bearing surface and the inner annular surface are inclined towards the inside of the watch case at a determined angle less than 90° relative to a central axis perpendicular to a plane of the watch case so as to distribute stresses between the back and the middle part due to the water pressure during a dive. The annular bearing surface and the inner annular surface are conical in shape.

Abstract: A stem-crown of a water-resistant watch case includes a stem inserted into a tubular opening of a middle part of the watch case, and a crown including a first portion connected to the stem and a second handling portion. The first portion of the crown includes an annular contact surface, which is inclined at a determined angle less than 90° relative to a longitudinal central axis of the stem-crown, extending from the link between the stem and the first portion of the crown towards the outside of the second portion of the crown. In a rest position, the first portion of the crown comes into contact or bears against an annular receiving surface of the middle part, the shape thereof complements that of an end of the tubular opening to the outside.

Abstract: A transponder for securing a product displayed in a shop. The transponder includes two blocks each including a contact surface, the contact surfaces being positioned face to face, the blocks being connected to each other by an adjustable connection, that allows to manually adjust the moving closer together or farther apart of the blocks with respect to one another, thus allowing the transponder to be attached to a suitable element of the product, by gripping the element between the contact surfaces of the blocks, one of the blocks including wireless detection and transmission equipment, which allows the remote management of the presence of the transponder on the suitable element.

Abstract: A water-resistant watch case of a diving watch, includes at least one back mounted on a lower side of a middle part, and a crystal mounted with a fastening gasket on an upper side of the middle part. The back includes an annular bearing surface for coming into contact with an inner annular surface of the middle part of a shape complementary to the bearing surface during mounting of the back on the middle part. The annular bearing surface and the inner annular surface are inclined towards the inside of the watch case at a determined angle less than 90° relative to a central axis perpendicular to a plane of the watch case so as to distribute stresses between the back and the middle part due to the water pressure during a dive. The annular bearing surface and the inner annular surface are conical in shape.

Abstract: A stem-crown of a water-resistant watch case includes a stem inserted into a tubular opening of a middle part of the watch case, and a crown including a first portion connected to the stem and a second handling portion. The first portion of the crown includes an annular contact surface, which is inclined at a determined angle less than 90° relative to a longitudinal central axis of the stem-crown, extending from the link between the stem and the first portion of the crown towards the outside of the second portion of the crown. In a rest position, the first portion of the crown comes into contact or bears against an annular receiving surface of the middle part, the shape thereof complements that of an end of the tubular opening to the outside.

Abstract: A water-resistant watch case of a diving watch, includes a back mounted on a lower side of a middle part, and a crystal mounted on an upper side of the middle part. The crystal includes an annular peripheral surface mounted by a first portion of an annular gasket made of amorphous metal on an inner annular surface that is complementary in shape, on the upper side of the middle part. A second portion of the gasket on the first portion of the gasket maintains the crystal against the middle part. The annular peripheral surface of the crystal is inclined towards the inside of the watch case at an angle less than 90° relative to a central axis perpendicular to the plane of the watch case to distribute stresses between the crystal and the middle part due to the water pressure.

Abstract: A water-resistant watch case of a diving watch, includes at least one back mounted on a lower side of a middle part, and a crystal mounted on an upper side of the middle part. The crystal includes an annular peripheral surface to be fastened with an amorphous metal gasket on an inner annular surface that is complementary in shape, on the upper side of the middle part. The annular peripheral surface of the crystal is inclined towards the inside of the watch case at a determined angle less than 90° relative to a central axis perpendicular to a plane of the watch case to distribute stresses between the crystal and the middle part due to the water pressure during a dive. The annular peripheral surface and the inner annular surface are conical in shape.

Abstract: A method for manufacturing an external component for horology or jewellery made of a composite material including a reinforcement formed of a preferably perforated structure and a matrix composed of a synthetic material, the method including the successive steps consisting in: a) making a 3D file of the reinforcement, b) forming the reinforcement by additive manufacturing, c) embedding all or part of the reinforcement in the synthetic material. An external component for horology or jewellery can be made of a composite material including a matrix composed of a synthetic material and a reinforcement having a perforated structure obtained by additive manufacturing.

Abstract: A clasp for a bracelet having first and second free ends, the clasp including: a device for adjusting the useful length of the bracelet including an adjusting member carrying a first bracelet fastening member, and a lock having a default closed state, in which the adjusting member is fixed, and an open state, in which the adjusting member is free to slide with respect to a second bracelet fastening member to modify the useful length of the bracelet. The adjusting device is distinct from the locking member, and the lock is arranged to change from the closed state to the open state thereof by action of the user such that the adjusting member is shifted independently of the open or closed state of the clasp. The control member includes a push-piece displaceable in response to an action of the user, the push-piece being independent of the lock.

Abstract: A clasp for a watch bracelet or for a garment belt includes at least two unfolding arms articulated to each other, a first unfolding arm includes a first end attached to a bracelet strand and a second end pivotally articulated to a first end of a second unfolding arm, a second end of the second unfolding arm is traversed by an arbour about which there is articulated a cover with first and second flaps and to which another bracelet strand is attached. The clasp includes a push button fastening system, including at least one push button that controls a bolt pivotally mounted on the cover, the bolt includes a first hook cooperating with a second hook fitted to the first unfolding arm and keeping the second hook locked when the push button is not manually activated, the first hook being kept engaged with the second hook by an elastic structure.

Abstract: Clasp for a watch bracelet comprising a cover connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, a connecting means being inserted between the second bracelet strand and the cover of the clasp, the connecting means comprising an end link sliding along a longitudinal direction of the clasp between a first position in which the end link is at least partially engaged in the cover of the clasp, and a second position in which the end link is disengaged from the cover of the link, the end link comprising a push-button which, when pressed, causes a toothed element to change from a first position, in which the toothed element is in mesh with a rack toothing integral with the cover of the clasp, to a second position, in which the toothed element is released from the engagement thereof with the rack toothing; the clasp being characterized in that the end link includes a housing in which there is arranged at least one spring, the spring being covered by the push-button

Abstract: A bracelet clasp including three strips, and a cover hinged to one of the strips. The clasp is provided with first and second push-pieces and with a safety device preventing lateral movement of the cover causing the clasp to unlock when pressure is simultaneously exerted on the push-pieces. The safety device includes a spacer being received between the cover flaps, the ends of the spacer abutting against the cover flaps so as to prevent lateral movement of the cover causing the clasp to unlock when pressure is simultaneously exerted both on a push-piece and on a flap of the cover opposite the push-piece.

Abstract: A bracelet clasp includes three strips, and a cover hinged to one of the strips. The clasp is provided with first and second push-pieces and with a safety device preventing lateral movement of the cover causing the clasp to unlock when pressure is simultaneously exerted both on a push-piece and on a flap of the cover opposite said push-piece. The safety device includes a spacer being received between the cover flaps, the ends of the spacer abutting against the cover flaps so as to prevent lateral movement of the cover causing the clasp to unlock when pressure is simultaneously exerted both on a push-piece and on a flap of the cover opposite the push-piece.