A clasp for a watch bracelet including a cover connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, a connection between the second bracelet strand and the cover of the clasp, the connection including a connecting link sliding in a longitudinal direction of the clasp between a first position and a second position. The clasp includes at least one first and one second bars mounted in the cover, and the connecting link includes a lever provided with a hook capable of moving from a first position wherein the hook is engaged with a first bar integral with the cover of the clasp, into a second position wherein the hook is released from the engagement thereof with the first bar and the link is free to slide so as to engage the second bar with a hook.

The invention is directed to a decorative connector for forming a jewelry item, said decorative connector comprising: a decorative member having oppositely located sections, said decorative member comprising a loop at one of said oppositely located sections, said decorative member comprising a decorative body, said loop having a first end fixedly attached to the body of said decorative member, a second end of said loop removably connected to the body of said decorative member to open said loop, the connections between said loop and said body of said decorative member being substantially hidden from view, a passageway through the other of said oppositely located sections of said decorative member, said passageway enabling connecting said decorative connector to a jewelry item.

An extensible jewelry item includes an annular element formed by a plurality of links and an internal titanium or stainless steel spring is mounted to extend each link. Each link has on each side an external female element and an internal male element. The female elements are micro-slots in the extended sections of each links. The male elements are internal micro-posts that extend through the female's slots to restrict the movement of the female elements of the link adjacent thereto away from each other. The micro-size of posts and slots enables the mechanism to be applied to links as small as 2.0 mm×2.0 mm×2.0 mm; therefore, also ideal for fine jewelry rings. In the elliptical version of the extensible jewelry item, the adjacent surfaces of each link are designed with individual specific taper angles; thus, when assembled, the links form an elliptical shape. In the elliptical shape, each link is numbered, and is placed in specific position. In the round version of the extensible jewelry item, the taper angles of the adjacent surfaces are all the same; therefore, the links are not numbered and is not relevant where they'll be placed.

The present invention relates to jewelry and specifically jewelry with retroreflective inlays. Specifically, the invention relates to a chain link or other jewelry item, with an inlay trough formed in the chain. The inlay trough can be created in a number of ways including casting, CNC milling, photolithography and chemical milling. Once an inlay trough is created, a retroreflective material is embedded in the trough. The retroreflective material which has a bonded top layer of acrylic or polyester is then sealed into the trough with a resin layer that creates a highly reflective, water-resistant, and protective surface. The disclosed invention covers the chain or other jewelry of similar style and the method for producing the jewelry.

The method for configuring a wristwatch strap for a given wearer includes: firstly, acquiring (E1) at least one morphological data item (1; 2) of the wearer of the bracelet; intermediately, automatically determining (E2) at least one optimal bracelet configuration (c*) adapted to the wearer, including determining the adjustment of the length of the bracelet on the basis of the at least one morphological data item (1; 2), the intermediate determining (E2) of the at least one optimal configuration of the bracelet including determining configuration data; and secondly, preparing (E3) the bracelet of the wearer according to an optimal configuration determined in the preceding step.

The jewelry item comprises an elastic element, which extends along an extension direction of the item through the entire length of the item, and a plurality of ornamental elements, which are threaded one after the other on the elastic element so as to be slidable relative to the elastic element and are non-releasably connected in twos to one another. Each ornamental element comprises a hollow body having a pair of longitudinally opposite first faces, namely a right-hand face and a left-hand face, respectively, and a pair of radially opposite second faces, namely an inner face and an outer face, respectively. The right-hand face of each ornamental element has a through opening communicating with an inner cavity of the ornamental element.

A device for attaching a bracelet or strap to a watch case includes a bar secured to the watch case by at least one horn and an insert integral with the end of the bracelet. The bar and the insert are complementary in order to cooperate by fitting one inside the other to form a removable assembly to make the bracelet interchangeable. The bar is formed by a cylindrical arbor having at least one flat portion. The flat portion cooperates by fitting with a housing made in the insert. The housing has a substantially rectangular opening for receiving the flat portion. The bar includes a control member for pivoting the bar from a first position A, in which the insert is positioned on the arbor, to a second position B, in which the insert is locked onto the bar.

A device for attaching a bracelet or strap to a watch case includes a bar secured to the watch case by at least one horn and an insert integral with the end of the bracelet. The bar and the insert are complementary in order to cooperate by fitting one inside the other to form a removable assembly to make the bracelet interchangeable. The bar is formed by a cylindrical arbor having at least one flat portion. The flat portion cooperates by fitting with a housing made in the insert. The housing has a substantially rectangular opening for receiving the flat portion. The bar includes a control member for pivoting the bar from a first position A, in which the insert is positioned on the arbor, to a second position B, in which the insert is locked onto the bar.

A flexible jewelry cable includes a plurality of helical links. Each link has a body that extends helically about a central axis of the link. Each link includes a protrusion extending from an inner surface of the body at or near ends of the body. Each protrusion defines a through hole that is coaxially aligned with the body. The body defines a female recess on the inner surface of the body, each recess corresponding to one protrusion. The recesses are at or near the ends of the body. One recess of a first one of the links is configured to receive one protrusion of a second one of the links and align the hole of the received protrusion with the hole of one protrusion of the first link. The cable includes a string extending through the aligned holes of the protrusions of the links.

A tracking device, including a communication interface encased in a encasement with a receptacle on two opposite sides of the encasement, a strap, including one or more thin elongated flexible sheets, links coupled to one side of the one or more thin elongated flexible sheets, a fiber optic cable extending from a first end of the one or more thin elongated flexible sheets to a second end of the one or more thin elongated flexible sheets, a head connected to each end of the one or more thin elongated flexible sheets; wherein the heads are configured to fit into the receptacles and lock the strap in the receptacles thus preventing the strap from sliding out of the receptacles; and wherein the communication interface is configured to detect tampering with the strap by transmitting an optical signal through the fiber optic cable.