A fastening device has a first fastening member with a plurality of teeth and a second fastening member with a plurality of sockets which are sequentially engagable in tooth and socket pairs in an engagement direction by relative rotation of the tooth and socket. Each tooth has a first surface and a second surface fixed relative to the first surface. Each socket has a recess defined by a first wall and second wall fixed relative to the first wall. Upon engagement, the first and second surfaces of the tooth abut the respective first and second walls of the recess and prevent relative movement of the tooth in the engagement direction and a portion of the first wall of the socket closely abutting the first surface of the tooth is disposed between the tooth and a portion of the first fastening member and prevents relative separation of the tooth and socket.

A female member (1) of a snap fastener includes a main body (2) made of a metal and having a cylindrical tube portion (23) and a dish-shaped portion (22), a resin spring (3) housed in the main body (2), and a surface covering member (4) crimped onto the cylindrical tube portion (23). The resin spring (3) is a resin plate that can be housed in the main body (2), and the resin plate has a slot (35, 35A, 35B, 35C) at a central portion thereof. The cylindrical tube portion (23) has a support portion for the resin spring (3), and the resin spring (3, 3A, 3B, 3C) is fixed in position by the support portion.

A reusable protective cover for a male portion of a snap fastener may be configured with a symmetrical convexly-curved continuous upper surface extending from the surface to which the male portion of the snap fastener is attached, to above the male portion of the snap faster, the upper surface having an area that is large in size relative to the size of the male portion of the snap fastener and shaped so that the force of someone stepping on the cover would be spread out over a much larger area than the area presented by the male portion of the snap fastener, thus greatly reducing the pressure on the bare foot of someone stepping on the cover, while also protecting the male portion of the snap fastener. Structure is provided to prevent water entrapment under the cover.

A two-part watch strap (1) including a clasping part (2) and a clasped part (3). The clasping part (2) includes: a clasping-part watch-attaching end; a clasping end opposite the clasping-part watch-attaching end; a strap/band/bracelet portion (4) extending between the watch-attaching and clasping ends of the clasping part (2); and a groove (11) arranged in the strap/band/bracelet portion (4). The clasped part (3) includes: a clasped-part watch-attaching end; a free end (9) opposite the clasped-part watch-attaching end; a strap/band/bracelet portion (6) extending between the watch-attaching and free ends of the clasped part (3); and a protruding portion (10) adjacent to, near, or at the free end (9). The protruding portion (10) is configured to engage with and at least partially lock into the groove (11) of the clasping part (2) so as to secure the free end (9) of the clasped part (3) to the clasping part (2).

An adjustment strap with quick crimp nibs for a multitude of binding embodiments (such as backpacks, seatbelt fasteners, waist belts, hats etc.) is disclosed. The invention being comprised of two, rigid but slightly flexible, interlocking tabs made of, but not limited to, plastic, silicone compounds and the like. Said interlocking tabs being considered male and female components. Notches along the perimeter of said female tab having a triangular shape with a protruding ridge configured to receive proximally-facing teeth on the male tab. An object of the invention is to enhance the ability of a strap to maintain its interlocking strength during tension loads.

An adjustment strap with quick crimp nibs for a multitude of binding embodiments (such as backpacks, seatbelt fasteners, waist belts, hats etc.) is disclosed. The invention being comprised of two, rigid but slightly flexible, interlocking tabs made of, but not limited to, plastic, silicone compounds and the like. Said interlocking tabs being considered male and female components. Notches along the perimeter of said female tab having a triangular shape with a protruding ridge configured to receive proximally-facing teeth on the male tab. An object of the invention is to enhance the ability of a strap to maintain its interlocking strength during tension loads.

An accessory lock includes a first connection element, a second connection element and a lock device. The first connection element includes a connection portion and a retaining portion connecting with the connection portion, wherein the connection portion has a holding cavity extending in a direction perpendicular with an axial direction of the connection portion. The second connection element has at least one through hole. The lock device includes a retainer disposed in the holding cavity of the connection portion of the first connection element. At a locked state of the accessory lock, the second connection element is retained and held between the retainer and the retaining portion of the first connection element by the retainer while the first connection element passing through the through hole of the second connection element.

A fastening device and a fastening system including two fastening devices. The fastening device includes a first part having a first engaging side and a second part having a second engaging side, and at least two sets of individual engaging members configured to engage each other. Each set of engaging members includes a hook member and a locking member. The hook member protrudes from the first engaging side and has an engagement side from which a hook protrudes. The locking member is pivotably connected to the second part and extends into a recess in the second engaging side. The recess is adapted to receive the hook member for engagement with the locking member, and the locking member is configured to pivot towards the hook member when the hook member is in engagement with the locking member and a force is applied from the hook member on the locking member.

Embodiments are generally directed to a snap button fastener providing electrical connection. An embodiment of a fastener includes a first mechanical part, the first mechanical part including at least a stud portion, the first mechanical part including a first electrical connector; a second mechanical part, the second mechanical part including at least a socket portion with a spring element and the socket portion, the second mechanical part including a second electrical connector. The stud portion of the first mechanical part and the socket portion of second mechanical part, if separated, are to interlock upon the application of a first force towards each other, and, if interlocked, to separate upon the application of a second force away from each other. The first electrical connector and the second electrical connector are to be electrically connected when the first mechanical part and the mechanical part are interlocked, and first electrical connector and the second electrical connector are to be disconnected when the first mechanical part and second mechanical part are separated.

A button assembly includes a back member, a socket or a stud secured with an eyelet or a rivet to the back member and a shell crimped onto the back member. Indicia may be disposed on the exterior surface of the shell. The button assemblies, each with a unique image, can be used to form a puzzle or provide a method of personal expression or a method of communication.