The present invention concerns a fastening and/or connection device (10; 110, 210) for a jewellery and/or costume jewellery item (B), wherein said item (B) comprises a first free end (B1) and a second free end (B2) to be joined together. The device (10; 110; 210) comprises a first portion (20; 120) suited to be connected to the first free end (B1) of the item (B) and a second portion (30; 130) suited to be connected to the second free end (B2) of the item (B). The device (10; 110; 210) comprises a main body (40; 140), first connection means (50; 150; 250) suited to place the main body (40; 140) and the first portion (20; 120) in a disengaged operating configuration or in an engaged operating configuration, and second connection means (60; 160) suited to place the main body (40; 140) and the second portion (30; 130) in a disengaged operating configuration or in an engaged operating configuration.

A clasp assembly for removably securing two ends of a piece of jewelry includes a first mating segment. The first mating segment includes a key body. The key body is attached to and extends away from the first mating segment. A second mating segment is releasably engaged with the first mating segment. The second mating segment includes a receiver body. The receiver body has a key notch sized to receive the key body. A tab is attached to and extends away from the second mating segment and is configured to engage the key body. A locking clasp is pivotally coupled to the second mating segment. The locking clasp moves between a locked position and an unlocked position. A detent is attached to the locking clasp and is positioned to extend through the second locking aperture to inhibit the key body from being removed from the receiver body.

A clasp assembly for removably securing two ends of a piece of jewelry includes a first mating segment. The first mating segment includes a key body. The key body is attached to and extends away from the first mating segment. A second mating segment is releasably engaged with the first mating segment. The second mating segment includes a receiver body. The receiver body has a key notch sized to receive the key body. A tab is attached to and extends away from the second mating segment and is configured to engage the key body. A locking clasp is pivotally coupled to the second mating segment. The locking clasp moves between a locked position and an unlocked position. A detent is attached to the locking clasp and is positioned to extend through the second locking aperture to inhibit the key body from being removed from the receiver body.

A member for an accessory includes: a base portion that is connected to a part of an accessory; and a movable portion that is supported to be capable of turning relative to the base portion, and that opens and closes the clasp member for accessory by the turning. The clasp member is separably coupled to a coupling subject portion. A base-side coupling portion of the base portion is arranged on one side in a longitudinal direction of the base portion, the one side being opposite to another side on which a connecting part of the base portion is arranged, the connecting part being connected to the part of the accessory.

A jewelry closure mechanism (e.g., clasp) may include a locking receptacle and a locking pin that operate together to provide a closure mechanism for a piece of jewelry. The closure mechanism may or may not include a hinge. In some implementations, a locking pin may extend from the second arm and be inserted into a locking receptacle formed in a second arm to lock the two components together. The locking receptacle may include one or more wires (e.g., spring and/or precast) that extend transversely to the direction of the locking receptacle. The closure mechanism may be used as a general jewelry closure device and/or to couple segments of j ewelry together.

A jewelry article is disclosed. The jewelry article includes a main segment configured to loop around a body part and having a first and second end. A ring with a center opening is attached to the second end of the main segment. An extender has a first and second end, wherein the first end of the main segment is attached to the second end of the extender and the first end of the extender passes through and extends beyond the center opening of the ring, providing a variable circumference loop. The jewelry article further includes a fastener attached to the first end of the extender, wherein the fastener is larger than the opening of the ring and cannot pass therethrough, and the fastener is configured for removeable connection to the extender or the ring. Methods of securing the jewelry article around a body part are also disclosed.

Bands for wearable devices include multiple band retainers used to maintain engagement between an assembly (e.g., a pair) of bands. Some band retainers may be permanently affixed with the band at a certain location of the band, while other band retainers can be removable. The removable band retainers can be moved to different locations of the band, thus allowing the band retainer to retain another band at different locations. As a result, the assembly of bands can be used with different users, and in particular, users with different wrist sizes. Moreover, using multiple band retainers can provide an engagement force between the bands to withstand higher-impact events, such as swimming and diving. Additionally, bands and band retainers may include one or more liquid-resistant and corrosion-resistant materials.

A jewelry clasp includes a lower arm and an upper arm that are hingedly joined to each other at one respective ends thereof. A locking pin is provided adjacent a second end of the upper arm and the locking pin extends toward the respective second end of the lower arm and locked inside a locking receptacle formed adjacent a second distal end of the lower arm. The locking receptacle contains two spring wires that extend transversely to the direction of the locking receptacle, the spring wires being spaced from each other at a distance slightly smaller than the diametrical size of a pin head of the locking pin. The clasp can be used as a general jewelry closure device.

A child safety assembly includes a wristband that is selectively worn around a child's wrist. A lock is movably coupled to the wristband and the lock is selectively manipulated. The lock is selectively positioned in a locked position to retain the wristband on the wrist. The lock is selectively positioned in an unlocked position to facilitate the wristband to be removed from the wrist. An alert unit is coupled to the wristband and the alert unit is in thermal communication with the wristband's environment. The alert unit selectively emits an audible alarm and the alert unit is in wireless electrical communication with an electronic device. The alert unit emits the audible alarm when the alert unit detects a temperature of the wristband's environment falls below or rises above a trigger temperature. In this way the alert unit alerts a caregiver to a potential hazard with respect to the child.

A watchband assembly and a wrist-worn device having the same are provided. The watchband assembly includes a watch buckle, a watchband, a buckle tongue, and a rotating shaft for mounting the buckle tongue to the watch buckle, wherein the watch buckle includes a watch buckle upper cover and a watch buckle lower cover, the watchband and the rotating shaft are both arranged between the watch buckle upper cover and the watch buckle lower cover, and a fastener penetrates the watchband and is fixedly connected to the watch buckle to press and fix the watchband to the watch buckle. The lower surface of the watch buckle upper cover and/or the watch buckle lower cover is in contact with a human body when worn, such that the surface in contact with the human body when worn is smooth.