A releasable mooring chain link (1, 10) having a generally ring-shaped configuration with one side of the link capable of being opened or closed by a bolt (7, 11), and a web (6) extending transverse within said ring-shape to connect opposite sides of said link (1, 10). The invention further relates to a method for maintaining the releasable link closed.

A release mechanism for separating sections of mooring lines has a main body with two separable first and second halves or sections. A hydraulic assembly within the main body is controlled by an acoustic system, and moves a rod and button so as to move locking shoes within the main body. The locking shoes hold the first and second sections locked together, or alternatively release them to disconnect the mooring line. In addition to the acoustically controlled hydraulic assembly, the release mechanism has a mechanical disconnect, which is operated by pulling the release mechanism into a chain fairlead or the like, or by pulling an encircling member such as a trigger sleeve into the release mechanism. The release mechanism may include instrumentation to transmit various operating conditions of the release mechanism when in use.

A release mechanism for separating sections of mooring lines has a main body with two separable first and second halves or sections. A hydraulic assembly within the main body is controlled by an acoustic system, and moves a rod and button so as to move locking shoes within the main body. The locking shoes hold the first and second sections locked together, or alternatively release them to disconnect the mooring line. In addition to the acoustically controlled hydraulic assembly, the release mechanism has a mechanical disconnect, which is operated by pulling the release mechanism into a chain fairlead or the like, or by pulling an encircling member such as a trigger sleeve into the release mechanism. The release mechanism may include instrumentation to transmit various operating conditions of the release mechanism when in use.

An extended-life tire chain and method of extending the life of a tire chain. An extended-life tire chain has a plurality of chain links, a plurality of twin clevises each secured to two of the links, and a plurality of clevis pins each having a head on one of its extremities. Each twin clevis has two receptacles. Each clevis pin is removably disposed in a different one of the receptacles. The twin clevises are oriented such that, when the tire chain is installed on a tire, the heads project radially away from a tread surface of the tire.

A shackle for a choker hitch includes a shackle body having a first end portion and a second end portion, a stabilizer portion positioned therebetween, a first leg and a second leg fixedly spaced apart by, and connected to, the stabilizer. The body includes a load-facing surface with a gripping surface extending from the first to the second end portion. A rod is removably positioned across the first end portion, and rigidly and removably connects the first leg to the second leg at the first end portion. A remotely releasable pin device includes a pin removably positioned across the second end portion and releasably connecting the first leg to the second leg at the second end portion. The load-facing surface may be curved or flat. The pin may be at 90 degrees for horizontal lifts, or less, e.g., 80 degrees, to the shackle body for vertical lifts.

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.

Configurable safety device comprising a main branch which, in turn, comprises a cable delimited by a flashing and a steering lock, with a series of rings and anchorage clamps of complementary geometries arranged on the cable in such a way that, in the locked position, all these elements are closely joined and the anchorage clamps are blocked without the possibility of opening, while in the unlocked position, spaces are generated between the elements, anchorage clamps and rings, allowing the opening of these anchorage clamps. The passage from the closed to the unlocked position is obtained by increasing the available cable extension, and the passage from the unlocked to the locked position by decreasing it. For this purpose, the steering lock has the means to increase or decrease this extension of available cable as well as a latch to fix it.

Block lock (100) for round steel chains, having two half elements (10) which are displaceable relative to one another for opening and closing the block lock (100) and which each have ends connected to one another via a longitudinal web (10.1), of which in each case one end has an insertion plug (11) with a width reduced in relation to the longitudinal web and with retaining webs (13.1, 13.2) integrally formed on both sides, wherein at least two parallel retaining webs (13.1, 13.2) are arranged above one another on each side, and of which in each case the other end has a receiving pocket (12) which serves to receive the insertion plug (11) and on the two lateral inner flanks of which there are in each case formed at least two retaining grooves (14.1, 14.2) above one another to form a toothing by receiving the retaining webs (13.1, 13.2). A central web (10.2) extends inwardly from at least one longitudinal web (10.1). The insertion plug (11) widens, as seen in side view, from the longitudinal web (10.1) towards its end, and the length of the retaining webs (13.1, 13.2) increases. At the same time, the receiving pocket (12), as seen in side view, narrows from the longitudinal web (10.1) to its end.

A main body provided with a pocket for accommodating a first chain link of another chain, and a lock lever which is capable of switching between & locked state and an unlocked state by pivoting, and which restricts disengagement of the first chain link from the pocket in the locked state, and allows the first chain link to disengage from the pocket in the unlocked state, which is resisted by an urging force of an urging member, wherein the pocket side, and the locking piece projects toward a position in which movement of a second chain link in an escaping direction is restricted, a first operating piece extending to the side of the pivot point on which one chain is coupled, and a second operating piece extending to the opposite side.

A main body provided with a pocket for accommodating a first chain link of another chain, and a lock lever which is capable of switching between & locked state and an unlocked state by pivoting, and which restricts disengagement of the first chain link from the pocket in the locked state, and allows the first chain link to disengage from the pocket in the unlocked state, which is resisted by an urging force of an urging member, wherein the pocket side, and the locking piece projects toward a position in which movement of a second chain link in an escaping direction is restricted, a first operating piece extending to the side of the pivot point on which one chain is coupled, and a second operating piece extending to the opposite side.