An apparatus for timely and securely locking and releasing a rope includes a housing having an interior space and a communication portion for entering a rope into the housing. The housing includes an abutment portion fixed into the housing, a rotatable cam configured to be corresponsive to the abutment portion and pivotally connected to an inner side of one of the side panels, an elastic member installed between the side panel and the cam, and a rotatable start portion having an engagement surface and a first engagement portion. The rotatable start portion is configured to be corresponsive to an end of the cam and pivotally connected to an end of an inner side of one of the side panels, and an end of the start portion has a second engagement portion corresponding to the first engagement portion.

An assembling structure for timely and securely locking and releasing a rope includes a housing including two integral side walls for defining a space to allow a rope to pass through; a contact surface on an inner surface of the housing; a pivotal cam including an occlusion section and an engagement surface adapted to pivot about the contact surface from a first position to a second position and vice versa; a torsion spring on one pivot of the cam and having one end fastened in the cam and the other end passing through a limit member of the cam; and a pivotal trigger adapted to pivot about the housing from a third position to a fourth position and vice versa, the trigger including an occlusion member at one end in gear engagement with the occlusion section and a lever at the other end and extending out of the housing.

A Irreversibly Locking Clip. The clip has a hinged latch that pivots from an open position to a closed position, similar to a conventional caribiner. The clip provides the structural strength and durability of a caribiner or shackle. The clip includes one or more spring-loaded pins that will irreversibly lock the latch in a closed position by extending into a corresponding socket when the latch is closed. Additionally, the clip incorporates a retaining tip at the tip end of the latch that engages a tip retaining socket when the latch is closed in order to provide additional reinforcement between the latch and the body of the clip.

A Irreversibly Locking Clip. The clip has a hinged latch that pivots from an open position to a closed position, similar to a conventional caribiner. The clip provides the structural strength and durability of a caribiner or shackle. The clip includes one or more spring-loaded pins that will irreversibly lock the latch in a closed position by extending into a corresponding socket when the latch is closed. Additionally, the clip incorporates a retaining tip at the tip end of the latch that engages a tip retaining socket when the latch is closed in order to provide additional reinforcement between the latch and the body of the clip.

A bicycle chain comprises an inner link plate. The inner link plate comprises a first inner-link end portion, a second inner-link end portion, an inner-link intermediate portion, a first chromized layer, and a second chromized layer. The first inner-link end portion includes a first inner-link opening and a first axially extending surface. The second inner-link end portion includes a second inner-link opening and a second axially extending surface. The first chromized layer has a first maximum axially chromized-treatment length defined in the first axially extending surface in an axial direction. The second chromized layer has a second maximum axially chromized-treatment length defined in the second axially extending surface in the axial direction. Each of the first maximum axially chromized-treatment length and the second maximum axially chromized-treatment length is equal to or larger than 1.1 mm.

A bicycle chain comprises an inner link plate. The inner link plate comprises a first inner-link end portion, a second inner-link end portion, an inner-link intermediate portion, a first chromized layer, and a second chromized layer. The first inner-link end portion includes a first inner-link opening and a first axially extending surface. The second inner-link end portion includes a second inner-link opening and a second axially extending surface. The first chromized layer has a first maximum axially chromized-treatment length defined in the first axially extending surface in an axial direction. The second chromized layer has a second maximum axially chromized-treatment length defined in the second axially extending surface in the axial direction. Each of the first maximum axially chromized-treatment length and the second maximum axially chromized-treatment length is equal to or larger than 1.1 mm.

The invention relates to a latching arrangement, in particular for a component from lifting, lashing or fastening technology. The latching arrangement has a first component provided at its one end with at least one laterally protruding, spring-tensioned latching projection, and a second component provided with a receptacle configured to receive in an insertion direction and to fasten rotatably the end of the first component. The second component comprises a latching recess for the latching projection, wherein the latching recess is bounded at least at one side by a release shoulder displaceable into the latching recess which is provided with a hand switch arranged so as to be accessible from outside the latching arrangement, which hand switch is connected in a movement-transmitting manner to the release shoulder and closes the receptacle. By simple actuation of the hand switch, the latching can be repeatedly and easily released.

The invention relates to a latching arrangement, in particular for a component from lifting, lashing or fastening technology. The latching arrangement has a first component provided at its one end with at least one laterally protruding, spring-tensioned latching projection, and a second component provided with a receptacle configured to receive in an insertion direction and to fasten rotatably the end of the first component. The second component comprises a latching recess for the latching projection, wherein the latching recess is bounded at least at one side by a release shoulder displaceable into the latching recess which is provided with a hand switch arranged so as to be accessible from outside the latching arrangement, which hand switch is connected in a movement-transmitting manner to the release shoulder and closes the receptacle. By simple actuation of the hand switch, the latching can be repeatedly and easily released.

A shortening hook with a coupling connection for shortening sling chains in hangers, having a hook body which comprises an eyelet at the top for coupling to a suspension ring and at the bottom a coupling connection with a coupling slot which is delimited by two parallel side wings and is downwardly open for the suspension of a chain and in its central region comprises a hooking-in region, which realizes an upwardly open, rectilinearly extending shortening slot and on which a chain, which is coupled to the coupling connection, is hookable by way of its free end region. In each case, only a coupling slot and a shortening slot are realized on the hook body and, when the shortening hook is seen in side view, are mounted offset laterally with respect to one another.

A chain fastening assembly includes a fastener that has a first loop and a second loop. The first loop has a clevis that is attached to a chain being releasably fastened to the first loop. Additionally, the first loop has a diameter that is sufficient to have a chain link passed therethrough regardless of the orientation of the chain link. The second loop has an inside diameter being sufficient to have a chain link passed therethrough when the chain link is oriented to lie on a vertical plane. Thus, the chain link can be passed into the second loop. Moreover, the second loop has an inside diameter being insufficient to allow the chain link to pass therethrough when the chain link is oriented to lie on a horizontal plane. In this way the fastener retains the chain in a closed loop for towing or the like.