Abstract: An item of luggage includes an extendable and retractable handle mechanism having a handle axle to which a grip portion is mechanically connected. An elongate member is mounted to be movable in translation relative to a fixed sheath partly housing a locking/unlocking system, which is mechanically connected to elongate member. An interface system is actuated by the handle axle and actuates the locking/unlocking system. A support member forms a housing for a portion of the handle axle and the interface system. The support member includes a wall forming a guide and a stop for rotational movement of the interface system and of the handle axle between first and second positions of the grip portion and the handle axle. In the first position, the locking/unlocking system locks the handle in a selected position. In the second position, obtained by the rotation of the grip portion, the locking/unlocking system unlocks the handle.

Abstract: A link chain of an article of jewelry and/or gemstone jewelry includes first and second links mechanically secured to one another and each including an ornamental element, a cradle configured to receive the ornamental element in an internal space and including a slot formed at a first end of the cradle and leading into the internal space, and an assembly head extending such that it projects from a second end of the cradle outside the internal space of the cradle; with the link chain being formed by the insertion of the head of the first link into the internal space of the second link through the slot thereof and by the ornamental element which comes to face the head of the first link and which is set in the internal space of the second link.

Abstract: A method for producing a finished leather substitute, finished leather substitutes obtainable by such method, and uses thereof are provided. Specifically, a method for producing a finished leather substitute is provided, comprising providing a sheet material grown from mycelium having a top surface layer and a bottom surface, and applying at least one finishing coating to the bottom surface only.

Abstract: A jewel and/or jewellery article includes a frame, a flap able to move with respect to the frame, configured to admit a first configuration wherein the flap at least partially covers the frame and at least one ornamental element that it includes, and a second configuration wherein the flap at least partially uncovers the frame and the ornamental element, a drive mechanism configured to cause to slide on the frame, in a first sliding direction, the at least one flap between a first position in the first configuration of the article and a second position in the second configuration of the article, and an actuation mechanism configured to act on the drive mechanism when the actuation mechanism is urged in a second actuation direction different from the first sliding direction.

Abstract: The invention relates to a method for producing a finished leather substitute, which method comprises providing a sheet material grown from mycelium, which sheet material shows a top surface layer and a bottom surface, wherein the method comprises applying at least one finishing coating on the bottom surface only.

Abstract: A mechanical warning device (1) for a vehicle, including for a velocipede, includes a body (2), a ringer (3) mounted on the body, a striker (4) movably mounted on the body and relative to the ringer, and a magnet mechanism (5) which is configured such that, when the striker is displaced from a stable position to an intermediate position in which it has been displaced away from the ringer, it drives the striker from the intermediate position to strike the ringer then brings the striker back into the stable position.

Abstract: A device for opening/closing an article includes an assembly button and a clasp casing with a mechanism including a housing, locking member and latch; the mechanism structured so with the housing in a first position and the button is inserted into the casing, the locking member immobilizes the button at least with respect to translation, when the housing is made to rotate and passes from its first to a second position, the member is moved until the button is released and the latch is driven with translational movement into the casing until the button is pushed out of the casing and the housing and the member are immobilized, when the button is reinserted into the casing, it pushes the latch which releases the housing, which is rotated and passes from its second to first position and the member is moved until the button is immobilized with respect to translation.

Abstract: Disclosed is a jewellery article including at least one first part having a first cylindrical inner face in which there is provided at least one groove, at least one second part having a second cylindrical inner face provided, in the extension of same, with at least one rim, the at least one rim being arranged facing the at least one groove, and at least one attachment member mechanically secured to the at least one rim of the at least one second part and extending into the at least one groove of the at least one first part; the at least one groove, the at least one rim and the at least one attachment member being configured to allow the at least one first part and the at least one second part to rotate freely with respect to each other.

Abstract: Disclosed is a belt buckle including a surround and an ornamental plate arranged in an interior space defined by the surround. The ornamental plate is connected to the surround by a pivot that allows the ornamental plate to be reversed within the surround. The buckle includes a lock to hold the ornamental plate in position with respect to the surround in a first position that exposes a first face of the ornamental plate via an open upper face of the surround, and in a second position that exposes a second face of the ornamental plate via the open upper face of the surround. The lock includes a first element projecting along an edge face of the ornamental plate and a second element projecting on an interior edge of the surround and which are configured to lock together mechanically. Also disclosed is a belt including such a buckle.

Abstract: Disclosed is a belt buckle including a surround and an ornamental plate arranged in an interior space defined by the surround. The ornamental plate is connected to the surround by a pivot that allows the ornamental plate to be reversed within the surround. The buckle includes a lock to hold the ornamental plate in position with respect to the surround in a first position that exposes a first face of the ornamental plate via an open upper face of the surround, and in a second position that exposes a second face of the ornamental plate via the open upper face of the surround. The lock includes a first element projecting along an edge face of the ornamental plate and a second element projecting on an interior edge of the surround and which are configured to lock together mechanically. Also disclosed is a belt including such a buckle.