225results about "Shackles" patented technology

A spring loaded quick release pin and tubular receiver with a retainer pin configured to secure the quick release pin in a shackle, clevis, yoke or forked rod end. The receiver is welded to a shackle or cast with the shackle as a single body. One end of the quick release pin has aligned J slots that engage the retainer pin positioned in the receiver with a clockwise twist. The other end of the quick release pin has a cap and a spring loaded sleeve that biases the cross pin against outside of the second leg of the shackle. The spring bias keeps the short leg of the J slot engaged with the retaining pin. The quick release pin is removed with a push and counter clockwise twist. The invention includes a kit with a receiver, a bushing and a quick release pin for installing or retrofitting existing shackles.

Locking devices as well as methods of their manufacture and use are disclosed. One locking device includes first and second legs operatively coupled together to form a perimeter substantially uninterrupted from a proximal end of the first leg to a proximal end of the second leg. The proximal ends are separated by an opening, and each proximal end respectively defines a passage. A keyway extends from the first leg passage, and first and second shoulders are adjacent the keyway. A receiving area extends from the second leg passage. A locking pin passes through the second leg passage and is movable between an open position, a closed position, and an intermediate position. The locking pin has a key and a stop that prevent the locking pin from passing entirely through the second leg passage. A biasing member biases the locking pin in various ways.

A shackle apparatus including a generally U-shaped shackle body having an arcuate end, a pair of parallel arms, and a retaining member spanning a gap defined between the shackle arms. The retaining member cooperates with the shackle body to define a closed loop which can be permanently attached to a sling or lifting cable. The retaining member prevents the shackle apparatus from being removed and installed on another sling or lifting cable without substantially destroying the shackle apparatus of the present invention.

A watch chain is disclosed. The watch chain comprises a pin groove formed at a spaced inner surface with a certain depth; a plurality of outer connection pieces which have through holes passing through the inner side of the pin groove in the direction of the back surface; a plurality of central connection pieces which have pin holes at spaced portion with the left and right sides of the same being communicated; a connection pin which passes through the pin hole of the central connection piece and is engaged at the pin groove of the outer connection piece of which both ends are connected with both sides of the central connection piece and with a screw hole being formed at both sides of the connection pin; and a screw which is engaged at the screw hole of the connection pin through the through hole, wherein the central connection piece and the outer connection piece of both sides are engaged so that a connection pin is inserted into the pin groove of the outer connection piece of one side and the pin groove of the outer connection piece of the other side through the pin hole of the central connection piece, and the screw is engaged at the screw hole of the connection pin through the through hole formed at the back surface of the outer connection piece.

A link plate assembly includes two first plate, two second plate, and two pins. The first plate includes a first aperture, a second aperture and a receiving aperture. Four convex portions facing the second plate are formed on the first plate. The second plate includes a first aperture and a second aperture. Two concave portions facing the first plate are formed on the second plate. One end of each pin is secured to the first aperture of the first plate. The other end of each pin includes a head portion and a groove portion. The head portion passes through the first aperture of the second plates and the receiving aperture of the other first plate. The groove portion passes through the second aperture of the first plate. The convex portions of the first plates contact with a non-concave part of the second plates when assembling. The convex portions coincide with the concave portions to disassemble the link plate assembly as the second plate is rotated relative to the first plate in a predetermined angle.

A lock assembly comprising a locking element having; a body having a first locking axis; at least one tab movable relative to the body, the tab movable between a retracted position and an extended position relative to the first locking axis; a locking surface having at least one retaining element; wherein the lock assembly is operative to adopt a locked condition where the at least one tab engages with a respective one of the at least one retaining element to prevent relative movement between the locking element and the locking surface in at least one direction of the first locking axis.

A hook is capable of hooking a chain at a desired length. The hook comprises a hook body, and a buckle above the hook body. The buckle has a U shape opening. Width of the shape opening is confined by the size of a chain to be hung. The buckle, has a penetrating groove which penetrates two inner sides of the buckle and one outer side of the buckle. A spring and a movable shaft pass through the penetrating groove. The movable shaft is positioned by a pin so that the spring is compressed by the movable shaft and the movable shaft will not drop out of the buckle. A notch is formed at a predetermined portion of the movable shaft. A semi-round groove is formed at a coupling portion of the buckle and the notch, and the semi-round groove is positioned across the two inner sides of the buckle.

A swivel attachment device comprising a pair of rings able to rotate freely with respect to one another around an axis of rotation defined by a central pivot-pin. At least one of the rings is in the form of a hook delineating a lateral access space. A removable closing part, composed of a spacer through which a fixing screw passes, is able to close said space performing partial take-up of the tensile forces.

A securing mechanism for a shackle having a pair of opposed legs with an opening at one end of each of the pair of opposed legs to form a pair of opposed openings. The securing mechanism includes a shackle bolt having a head at one end and a circumferential groove near an opposed end wherein the shackle bolt is received through the pair of opposed openings in the shackle. A two piece hinged clamp assembly is received in the circumferential groove in order to retain the shackle bolt in the shackle. A retainer pin is received in an opening in the two piece clamp assembly to hold the two piece clamp assembly in a closed position. A retainer clip surrounds the retainer pin. A lock pin through the two piece clamp assembly retains the retainer pin in the two piece clamp.

A shackle with a closure cross member having a concave cross section is disclosed. The closure cross member is inserted into the lugs at the end of a bail of a shackle such that the concave cross section is disposed between the inner faces of the lugs on the bail. The concave cross section of the closure cross member works to center a wire or rope connected to the shackle closure cross member and ensure that the wire or rope is perpendicular to the centerline of the closure cross member. The concave cross section disposed between the inner faces of the lugs on the bail ensures that the wire or rope connecting a load to the shackle remains normal to the centerline of the closure cross member regardless of the movement or orientation of the load attached to the shackle.

A load pin and clevis joint for joining two or more mechanical components together. The load pin includes a retention feature that requires two separate motions to unlock the pin. In a locked state, the load pin is secured across both halves of a clevis joint so that it completely spans an open span between the two clevis halves. In the preferred embodiment, the two motions required to unlock the load pin are (1) moving the load pin linearly; and (2) rotating the load pin.