Abstract: A heavy-duty shackle has a shackle body with two opposing end sections, each of which having a through-opening for receiving a bolt, which has a threaded section for a locknut at one end and a head at the other end, the head outer edge being non-circular. The through-openings are each surrounded by at least one nut bearing face, which is raised relative to a bearing face, directly surrounding the through-openings, for the head. An anti-rotation means for the bolt is formed in each case by a recessed head receptacle in the nut bearing face, the head outer edge being accommodated fully in the recess and being interlockingly held in place therein.

Abstract: The present invention relates to a component for lifting, lashing or stop technology, in particular a shackle, for outdoor or offshore applications. Thus, a component for lifting, lashing or stop technology is provided and comprises a main body having an opening and at least one closable passage that further comprises a closing element by means of which the passage is closed at a closing position. A closure through which the closing element is held at the closing position is provided such that it is rotatable relative to the main body and secured against opening of the passage, and a closure lock is provided, which is automatically activated at the closing position and through which the closure is blocked at the closing position, said closure lock comprising a grip element used for releasing the closure lock and configured for operation by hand without the use of a tool.

Abstract: A lifting shackle of a head assembly for a nuclear reactor according to one embodiment of the present invention comprises: a first member and a second member which extend in parallel to each other in a predetermined thickness and length and respectively have an upper portion and a lower portion; a first connection member which connects the upper portion of the first member and the upper portion of the second member to each other and is coupled to a hook; coupling sections which are respectively provided at the lower portions of the first member and the second members and has a hollow portion so as to be coupled to the head assembly for a nuclear reactor via pins; and stress reducing sections which are formed at the upper portions of the first member and the second member such that the stress reducing sections extend from the first connection member to the first member and the side end of the second member at a predetermined curvature and protrudes upwards so as to reduce bending stress that is applied to the

Abstract: A prop head bearing device used for a shield support and to receive a prop head includes a prop head bearing main body with a prop head receiving portion, a flange adjacent to the prop head receiving portion and a flange bore, and a receiving portion adjacent to the flange and remote from the prop head receiving portion. The prop head bearing device may also include a securing element including a securing element bore adapted in shape to the receiving portion, such that in the mounted state the securing element is locked with respect to the bore direction of the flange bore and that the securing element bore is aligned to the flange bore.

Abstract: A shackle mount that is connectable to a standard recovery winch cable. The shackle mount includes a shackle attachment tab that prevents lateral movement of the shackle mount along the shackle pin.

Abstract: A chain joint for link chains, having a main body in the form of an oval chain link with two mutually parallel longitudinal legs which are connected to one another at their ends via a rounded link portion, one defining a receiving opening for receiving chain links. The receiving opening is bounded at its ends by one longitudinal leg section, wherein, in the longitudinal leg, a threaded bore runs in the longitudinal direction and extends in both longitudinal leg sections. A closure screw engages the threaded bore in both longitudinal leg sections, so that, while maintaining the predefined sizes for outer circumference and link width of the main body, the main body, in the region of its longitudinal legs, includes a profile cross section that is larger than the profile cross section in the region of its rounded link portions.

Abstract: A locking device that connects to a grooved end of a dragline pin includes a lock block and a lock pin. The lock block has a through opening sized to receive the end of the pin. There is a bore formed in the lock block and transversely intersecting the through opening which is dimensioned to receive the lock pin. The lock pin is configured to pass through a portion of the grooved end of a received dragline pin received in the through opening to lock the dragline pin and any attached dragline component.

Abstract: A shackle assembly including a shackle and a driving device coupled with the shackle for driving a bolt system, which driving device is arranged to reciprocate the bolt system along the longitudinal axis of the bolt system between a shackle installing position and a shackle releasing position, wherein the bolt system includes a locking unit for locking the bolt system in its shackle installing position, and wherein the shackle assembly includes elements for transforming reciprocating movement of the bolt system into rotation of the locking unit around the longitudinal axis of the bolt system between a bolt locking position and a bolt release position of the locking unit.

Abstract: A chain link 2 for connecting two additional chain links 3, 3.1 hooked therein, for the formation of a round steel link chain, for example, a conveyor chain of a scraper conveyor, comprises two bends 4, 5 and two legs 7, 7.1 connecting the bends. On its external side facing away from its inner space 6, one or more functional surfaces 8, 11, 15, 15.1, 16 are present. The chain link 2 is designed asymmetrically with respect to at least one of its central planes in at least one of its two bends 4, 5 so as to form or enlarge one or more functional surfaces 8, 11, 15, 15.1, 16.

Abstract: A combination includes a shackle with a pin and a locking ring. The shackle body has a closed geometry defining a primary opening therethrough and includes a first side member with a first aperture, a second side member spaced apart from the first side member and having a second aperture. The second aperture is positioned opposite from and aligned with the first aperture. End portions extend between and connect the first side member and the second side member. A pin has a body portion extending between a head portion and a tip portion. The pin defines an annular slot extending at least partially around the pin. An expandable retaining ring is configured to be installed on the pin and occupy the annular slot, where the retaining ring prevents removal of the pin from the shackle body when the pin is installed in the shackle body.

Abstract: The present invention relates to a closure assembly (1, 1?) for closing a connecting link (100) of a tyre chain, comprising at least one closure element (10, 10?) that has at least one leg reception member (14, 14?) configured to receive therein, at least sectionwise, a leg (101) of the connecting link (100). In addition, the present invention relates to a connecting link (100) for connecting at least two links of a tyre chain, comprising two legs (101) that are interconnected via a yoke (108) as well as to a tyre chain, in particular a tyre protection chain.

Abstract: A combination includes a shackle with a pin and a locking ring. The shackle body has a closed geometry defining a primary opening therethrough and includes a first side member with a first aperture, a second side member spaced apart from the first side member and having a second aperture. The second aperture is positioned opposite from and aligned with the first aperture. End portions extend between and connect the first side member and the second side member. A pin has a body portion extending between a head portion and a tip portion. The pin defines an annular slot extending at least partially around the pin. An expandable retaining ring is configured to be installed on the pin and occupy the annular slot, where the retaining ring prevents removal of the pin from the shackle body when the pin is installed in the shackle body.

Abstract: A shackle assembly including a shackle and a driving device coupled with the shackle for driving a bolt system, which driving device is arranged to reciprocate the bolt system along the longitudinal axis of the bolt system between a shackle installing position and a shackle releasing position, wherein the bolt system includes a locking unit for locking the bolt system in its shackle installing position, and wherein the shackle assembly includes elements for transforming reciprocating movement of the bolt system into rotation of the locking unit around the longitudinal axis of the bolt system between a bolt locking position and a bolt release position of the locking unit.

Abstract: The invention relates to a device (1) for attaching an end link (2) of a chain strand (3) made of chain links (4) of a predetermined geometry. The device comprises a retaining device (5) comprising an insertion segment (7) at one end (6) that can be inserted in an opening (8) of the end link, and a retaining segment (5). The retaining segment comprises a cross section (28) on which the end link can be placed in a limited number of retaining positions, preferably only one single retaining position, from the insertion segment (7). The device further comprises a closure element (12) by which the end link can be permanently secured to the retaining device. In order to prevent tilting of the end link on the retaining device during operation, according to the invention the closure element forms a stop (14) by which a motion of the end link out of the retaining segment (10) in the direction of the insertion segment (7) is blocked.

Abstract: A shackle assembly with a unitary body has a closed geometry with a primary opening therethrough. A first side member has a first side aperture extending transversely therethrough with a first inside surface. A second side member is spaced apart from the first side member and has a second side aperture extending transversely at least partially through the second side member. End portions extend between and connect the first side member and the second side member. The second side aperture is opposite the first side aperture and axially aligned with the first side aperture. A pin has a head portion positioned at least partially within the first side aperture and a tip portion positioned at least partially within the second side aperture. A pin body extending between the head portion and the tip portion along a central longitudinal axis and is sized to pass through the first side aperture.

Abstract: A chain connection link includes: a pair of U-shaped links of a U-shaped configuration in front view and each having two arms; a connection arm portion provided at an end portion of one arm of each of these U-shaped links; a connection groove-shaped arm portion having a groove and provided at an end portion of the other arm of each of these U-shaped links; and through-holes provided in the connection arm portion and the connection groove-shaped arm portion, the connection arm portion of one U-shaped link being fit-engaged with the connection groove-shaped arm portion of the other U-shaped link, a connection shaft being passed through the through-holes to connect the pair of U-shaped links, wherein the size of the outer periphery of the connection groove-shaped arm portion is larger than the size of the outer periphery of the connection arm portion.

Abstract: A pipe lifting system including a lift bushing having a first outer surface, a second outer surface, a shoulder interconnecting the first and second outer surfaces, an inner bore extending from a first end surface to a second end surface, and a fastening mechanism operatively associated with the first outer surface or the second outer surface. The lift bushing is dimensioned to be inserted through a flange hole in a flange of a pipe to facilitate lifting of the pipe. The shoulder engages a shoulder of the flange hole. The fastening mechanism retains the lift bushing within the flange hole. The lift bushing is capable of remaining within the flange hole when the flange is attached to a flange of another pipe. The pipe lifting system may also include a shackle assembly capable of selectively engaging the inner bore of the lift bushing.

Abstract: The invention relates to a device (1) for attaching an end link (2) of a chain strand (3) made of chain links (4) of a predetermined geometry. The device comprises a retaining device (5) comprising an insertion segment (7) at one end (6) that can be inserted in an opening (8) of the end link, and a retaining segment (5). The retaining segment comprises a cross section (28) on which the end link can be placed in a limited number of retaining positions, preferably only one single retaining position, from the insertion segment (7). The device further comprises a closure element (12) by which the end link can be permanently secured to the retaining device. In order to prevent tilting of the end link on the retaining device during operation, according to the invention the closure element forms a stop (14) by which a motion of the end link out of the retaining segment (10) in the direction of the insertion segment (7) is blocked.

Abstract: The invention relates to a device for fixing an end-side of a flyer chain, wherein the fixing can be carried out by a clamping through the exertion of a force on partial sections of an outer circumferential surface of at least one plate-link of at least one end-side link of the flyer chain.

Abstract: A coupling link for connecting two parts together includes link components (which each form a partial link) that are joined together with a removable support. The support and link components are coupled together to withstand high loads and/or adverse wear conditions. The inventive construction is strong, durable, efficient, cost effective and easy to use. Wear caps are provided to facilitate extended usable chain life.

Abstract: 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.

Abstract: A shackle assembly includes a shackle body having two shackle arms extending from a bridge portion which is fixed to the two arms and connects the two arms to each other. A shackle pin can be mounted to the shackle arms and connects the two shackle arms in the mounted state. At least one pocket is formed in at least one of the shackle arms and/or the shackle pin, in which pocket a strain sensing element is received and fixedly attached to the bottom or wall of the pocket for detecting a shackle load acting on the shackle assembly. The pocket is a hole going partially through the shackle arm or going partially through the shackle pin, and the strain sensing element is a strain gauge which is attached to the wall or bottom of the hole.

Abstract: The device, which is intended to connect a shackle (1) to the links (2) of a chain using a bolt (8), comprises two parts (3) and (4), part 3 being a cylindrical body that guides the insertion/extraction of the bolt (8). A lever (7), which is joined to the bolt (8), extends from the side of the cylindrical body (5) and can be displaced in order to move the bolt (8). Part 4 comprises a nut (9) screwed to the end of the bolt (8) in order to secure such bolt (8). The invention also includes a handle (10) that can be attached to the nut (9) to allow the bolt (8) to be tightened by a robot. Parts 3 and 4 include brackets (11) and (12) between which through-rods (13) are screw-mounted at the ends thereof in order to secure said parts (3) and (4) to one another.

Abstract: The apparatus is intended for vertically linking a first chain and a second chain under water. The apparatus is characterized in that it comprises a lower base (1) with an open cross-shaped slot (5) into which the last link of the first chain (6) is inserted, extending above said lower base (1), while a guide/holder (2) for the second chain (7) is attached to the lower base (1) over said slot, said guide/holder containing an H-shaped shackle (11) that is coupled to the last link of said second chain (7) by means of a first bolt (12), the last link of the first chain (6) being inserted in the free space in the shackle (11) so that both chains (6-7) are coupled by means of a second bolt (13).

Abstract: 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.

Abstract: A shackle assembly includes a shackle body having two shackle arms extending from a bridge portion which is fixed to the two arms and connects the two arms to each other. A shackle pin can be mounted to the shackle arms and connects the two shackle arms in the mounted state. At least one pocket is formed in at least one of the shackle arms and/or the shackle pin, in which pocket a strain sensing element is received and fixedly attached to the bottom or wall of the pocket for detecting a shackle load acting on the shackle assembly. The pocket is a hole going partially through the shackle arm or going partially through the shackle pin, and the strain sensing element is a strain gauge which is attached to the wall or bottom of the hole.

Abstract: A vault cover grabber, bolt cover lifter or vault cover eye-hook is formed from two L shaped components with each component having an eye opening on one end and each component having an L shaped end (lower end) designed to be inserted through a void of a vault cover or other object. The top ends or eye ends of the two components are pivoted apart to allow the two lower ends to pass through a vault cover void. After insertion, the upper eye ends are pivoted together, causing the two lower ends to contain the vault cover. A hook or other object is placed through the two eye voids of the top ends of the two components. A combination of double clevis connectors, shaft collars, shackles and chains secure the vault cover grabber to a handle or other means of lifting.

Abstract: The device, which is intended to connect a shackle (1) to the links (2) of a chain using a bolt (8), comprises two parts (3) and (4), part 3 being a cylindrical body that guides the insertion/extraction of the bolt (8). A lever (7), which is joined to the bolt (8), extends from the side of the cylindrical body (5) and can be displaced in order to move the bolt (8). Part 4 comprises a nut (9) screwed to the end of the bolt (8) in order to secure such bolt (8). The invention also includes a handle (10) that can be attached to the nut (9) to allow the bolt (8) to be tightened by a robot. Parts 3 and 4 include brackets (11) and (12) between which through-rods (13) are screw-mounted at the ends thereof in order to secure said parts (3) and (4) to one another.

Abstract: An attachment shackle has an open ring having threaded first and second end-parts arranged facing one another at the opposite ends. A rotary ferrule of tubular shape is fitted with screwing on the second end-part to close or open the space separating the two end-parts. A lock is arranged at the rear of the first end-part. The lock engages in a notch of the ferrule to perform locking in the closed position. Unlocking is performed by a manual releasing action of the lock allowing movement of the rotary ferrule to the open position.

Abstract: The present invention is a shackle apparatus used for the lifting of subsea objects. The shackle apparatus includes a shackle body having a first leg and a second leg in which each of the legs has an eyelet formed therein. A pin is mounted through the eyelets of the legs of the shackle body. At least one latch extends radially outwardly of the pin and resides adjacent the first leg of the shackle body. A stop surface extends from the pin and is positioned adjacent the second leg of the shackle body. The pin has a generally pointed end so that a remotely operated vehicle can suitably guide the pin through the eyelets of the shackle body. A gripping member extends outwardly from an end of the pin so as to provide a surface whereby an ROV can grip the pin for installation into the shackle body.

Abstract: 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.

Abstract: This invention relates to a connector, particularly to a shackle suitable for use in connecting two links of a chain or a chain to an anchor, more particularly to a connector comprising a first portion and a second portion, at least one first connector arm on the first portion and at least one second connector arm on the second portion, wherein both the first and second connector arms have multiple bearing surfaces, preferably six, and are able to engage one another when the connector is coupled by means of the bearing surfaces. The connector of the present invention has the advantage of having a break load of 1.3[0.0274 d2(44?0.08 d) kN, wherein d is the nominal diameter, and preferably a thickness of 1.3 d.

Abstract: 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.

Abstract: This invention relates to a connector, particularly to a shackle suitable for use in connecting two links of a chain or a chain to an anchor, more particularly to a connector comprising a first portion and a second portion, at least one first connector arm on the first portion and at least one second connector arm on the second portion, wherein both the first and second connector arms have multiple bearing surfaces, preferably six, and are able to engage one another when the connector is coupled by means of the bearing surfaces. The connector of the present invention has the advantage of having a break load of 1.3[0.0274 d2(44?0.08 d) kN, wherein d is the nominal diameter, and preferably a thickness of 1.3 d.

Abstract: 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.

Abstract: A device for fastening emergency equipment to a vessel includes a hydrostatic release mechanism, a tether, and a float-free link. The tether is attached to the hydrostatic release mechanism and provides an attachment point for lashing the emergency equipment to the vessel. The tether may also be threaded through openings in the curved partially tubular body of the float-free link. A breakable bridge is integrally coupled to the body of the float-free link to form a closed loop. The breakable bridge is designed to be the break point when the emergency equipment needs to be freed from a vessel that has sunk below a predetermined depth. When the vessel sinks below the predetermined depth, the hydrostatic release mechanism severs the tether thus freeing the emergency equipment from one point of attachment to the vessel. The bridge is designed to break when the strain on the fastening line, e.g., the painter line, is between a predetermined minimum force and maximum force.

Abstract: A link assembly comprising a body and a closure. The body is generally c-shaped and includes two ends that confront each other in a spaced-apart relation. Each end of the body is provided with two or more external, helical thread sets that extend from each end towards the body. The closure includes a main section with first and second ends and a threaded interior surface that extends the length of the closure member. The treaded interior surface of the closure member engages and mates with each of the thread sets at the ends of the body. The closure is movable between a first or open position, which exposes a gap between the ends of the body, and a second or closed position that closes the gap between the ends of the body. Preferably, the closure member can be moved between the first and second positions in approximately five revolutions.

Abstract: A tool-less chain coupling link has first and second body members releasably joined together. A first hinge pin is movably positioned within corresponding openings in the first and second body members. A first hinge pin keeper member is pivotally attached to the first body member and movably attached to the first hinge pin. A second hinge pin is movably positioned within other corresponding openings in the first and second body members. A second hinge pin keeper member is pivotally attached to the second body member and movably attached to the second hinge pin. The first and second hinge pin keeper members can be pivoted in a first direction to withdraw the first and second hinge pins, respectively, a sufficient distance to allow the first and second body members to be released from each other.

Abstract: A device for fastening emergency equipment to a vessel includes a hydrostatic release mechanism, a tether, and a float-free link. The tether is attached to the hydrostatic release mechanism and provides an attachment point for lashing the emergency equipment to the vessel. The tether may also be threaded through openings in the curved partially tubular body of the float-free link. A breakable bridge is integrally coupled to the body of the float-free link to form a closed loop. The breakable bridge is designed to be the break point when the emergency equipment needs to be freed from a vessel that has sunk below a predetermined depth. When the vessel sinks below the predetermined depth, the hydrostatic release mechanism severs the tether thus freeing the emergency equipment from one point of attachment to the vessel. The bridge is designed to break when the strain on the fastening line, e.g., the painter line, is between a predetermined minimum force and maximum force.

Abstract: The present invention is a shackle apparatus used for the lifting of subsea objects. The shackle apparatus includes a shackle body having a first leg and a second leg in which each of the legs has an eyelet formed therein. A pin is mounted through the eyelets of the legs of the shackle body. At least one latch extends radially outwardly of the pin and resides adjacent the first leg of the shackle body. A stop surface extends from the pin and is positioned adjacent the second leg of the shackle body. The pin has a generally pointed end so that a remotely operated vehicle can suitably guide the pin through the eyelets of the shackle body. A gripping member extends outwardly from an end of the pin so as to provide a surface whereby an ROV can grip the pin for installation into the shackle body.

Abstract: The present invention provides an improved shackle having particular utility in underwater salvage operations. The present invention discloses a shackle that has a generally U shaped body that is comprised of a bow portion and first and second spaced apart arms. Each arm has an end portion with an opening for receiving a shackle pin. The shackle pin is sized and shaped to simultaneously fit through the shackle pin openings, and end portion of the pin having external pin threads. A nut provides an internally threaded opening for engaging external threads of a shackle pin. The nut is rotatably mounted to a second end portion of the shackle body. The external pin threads of the shackle pin and the internal threads of the nut are engaged when the pin is connected to the nut by rotating the nut. The pin does not rotate relative to the shackle body, due to an elongated groove in the pin that travels on a key portion of the shackle body that is in one of the openings.

Abstract: A mechanically releasable shackle pin arrangement that is readily operated by an ROV and is not affected by the hydrostatic pressures encountered at depth. A shackle body having two ends has a shackle pin received through bores at one end of the shackle body. A shackle nut threaded on the shackle pin secures the shackle pin in an installed position through the bores in the shackle body. An anti-rotation link plate is attached to the shackle body. The anti-rotation link plate extends to one end of the side plate. The shackle pin extends through bores at one end of the shackle body and the anti-rotation link plate and is secured in its installed position by a shackle nut threaded on the shackle pin. Means for preventing rotation of the shackle nut and loss of the shackle nut is provided on the anti-rotation link plate such that the shackle pin can be removed by a remotely operated tool on an ROV at depth to release a load without the need for hydraulics on the shackle assembly.

Abstract: An improved shackle assembly is disclosed that provides a bow having specially configured receptacle on one end portion that interlocks with a specially configured pin assembly. The pin assembly has locking members or lugs that move between locking and releasing positions. The locking lugs can be moved to a locking position or unlocked using a rotating end portion of the shaft opposite the receptacle.

Abstract: An insert assembly adapted to be received within a link of a chain including a plurality of round wire interlocking links, the insert being made of a resilient material and being dimensioned to be wider than the central area height and longer than the central area depth so that after the insert is placed between the opposed sides of the chain, the insert springs back around the opposed sides of the chain so that the insert is securely locked between the opposed sides of the chain. The insert has a central opening, and the insert assembly further includes a pin secured in the opening when the insert is received in the chain central area so that the insert cannot move away from the chain opposed sides.

Abstract: 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.

Abstract: A coupling element of a shackle for load-carrying elements, such as chains, hooks, or the like, is disclosed. The coupling element has two substantially parallel legs, whose free ends each have a bore for the accommodation of a connecting bolt, by means of which the coupling element can be linked to another coupling element of the same design to form the shackle, the coupling elements being held together only by the connecting bolt, which bores extend in the same direction relatively to each other, wherein the bores are out-of-line and extend at an angle to a longitudinal center line of the coupling element.

Abstract: The present invention provides an improved shackle having particular utility in underwater salvage operations. The present invention discloses a shackle that has a generally U shaped body that is comprised of a bow portion and first and second spaced apart arms. Each arm has an end portion with an opening for receiving a shackle pin. The shackle pin is sized and shaped to simultaneously fit through the shackle pin openings, and end portion of the pin having external pin threads. A nut provides an internally threaded opening for engaging external threads of a shackle pin. The nut is rotatably mounted to a second end portion of the shackle body. The external pin threads of the shackle pin and the internal threads of the nut are engaged when the pin is connected to the nut by rotating the nut. The pin does not rotate relative to the shackle body, due to an elongated groove in the pin that travels on a key portion of the shackle body that is in one of the openings.

Abstract: The present inventions relate generally to a shackle assembly and a method for installing and/or releasing the shackle assembly subsea. The shackle assembly of the present invention comprises first and second plates mounted on either side of a shackle body eyelet and a shackle pin mounting assembly for use in mounting a shackle pin using a shackle pin pulling tool.

Abstract: A combination master link and chain shortener that can be readily connected to existing closed loop lifting rings. In one preferred embodiment, a bail connects to a lifting mechanism and an elongated body having a pair of opposed ends includes an opening at one end to connect to the bail. A pair of chain shortening cradles are provided, each chain shortening cradle in angular relation to the elongated body. A pair of chain connecting hooks, each receive a chain end link therein. A chain retainer pin retains the chain end links within the connecting hooks. In an alternate embodiment, a bail connects to a lifting mechanism and an elongated body includes a pair of opposed ends with an opening at one end to connect to the bail. A pair of chain shortening cradles are provided with each cradle in angular relation to the elongated body. A pair of receptacles are provided at an opposite end of the body in order to receive a pair of chain end links.

Abstract: A hanging chain structure for a pendent lamp includes a plurality of hanging rings connected with each other. Each of the hanging rings includes a hook body, and a stop member pivotally mounted on the hook body. Thus, the hanging rings are connected with each other easily and rapidly, so that the hanging chain structure is assembled easily and rapidly, thereby facilitating the operator mounting the hanging chain structure. In addition, the hanging chain structure is combined with the pendent lamp and the ceiling easily and rapidly, thereby facilitating the operator mounting the pendent lamp to the ceiling.