Abstract: A cam-locking system for use with a retractable driveshaft that includes a housing, a cam carrier located at least partially in the housing, and a cam rotatably coupled to the cam carrier. Translation of the cam carrier along a central axis allows the cam to rotate into cooperative engagement with a catch recess on an interior surface of the housing, preventing the cam carrier from translating backwards, and thereby maintaining the retractable driveshaft in an engaged position. Further advancement of the cam carrier allows that cam to rotate into and unlocking gap in the interior surface of the housing, which enables the cam carrier to translate backwards along the central axis below the locked position, thereby disengaging the retractable driveshaft.

Abstract: An underpinning device for support a structure is provided. The underpinning device is anchored within the ground using a grout or cement. The underpinning device comprises a rod having a proximal rod end and a distal rod end. A first interacting element is coupled to the proximal rod end and is encased in the slab of a building. A second interacting element is coupled to the distal rod end and include a removable tip. Upon insertion into the ground, the tip dissociates from the second interacting element creating an opening at the distal rod end. A fluid, such as grout and/or cement is injected into the pipe and extruded through channels within the rod. The fluid is then allowed to cure thereby anchoring the underpinning device within the ground.

Abstract: Anchors, clutches, and lifting systems are described herein that increase the size of a shear cone within a precast concrete panel without using multiple clutches and without increasing the complexity of the lift system. A shear cone is the volume within the panel that the anchor and clutch pull on when orienting and positioning the precast concrete panel. Anchors described herein encompass a larger volume of the panel in different ways to produce a larger shear cone. Similarly, the clutches described herein have features that allow a clutch to accommodate the improved anchors. As a result, the anchors, clutches, and lifting systems provide a larger shear cone in the panel to increase the load capacity of the lifting system and reduce the likelihood of failure.

Abstract: There is disclosed a lifting attachment for a building unit comprising sheeting and a support structure over which the sheeting is disposed, the attachment being configured such that it can be connected to or integrated into the support structure and comprising a lifting anchor that, when the attachment is so connected or integrated, is engageable by a component for lifting the unit such that a releasable interconnection between the component and the support structure passes through an opening in the sheeting.

Abstract: A lifting and jacking apparatus including a void former configured for embedment in a concrete slab before pouring of the concrete slab and a lifting bail removably insertable in and securely attachable to the void former. The void former includes a built in jacking screw configured to assist in adjusting the height of the concrete slab.

Abstract: The invention relates to a stop point for inserting into an undercut opening. The stop point has a stop region for stopping a lashing, lifting, or stopping article, a shaft which extends along a shaft longitudinal axis away from the stop region for inserting into the opening, and a holding protrusion on the shaft end facing away from the stop region, the protrusion protruding transversely to the shaft longitudinal axis (L). In order to improve the reliability of stop points and in particular the axial load-bearing capacity, the holding protrusion is immovably connected to the shaft according to the invention.

Abstract: A system for retrieving a portable rumble strip from a roadway includes a carrier mountable to a vehicle for transporting retrieved portable rumble strips and a winch mountable to the carrier. The carrier has a support surface configured to support a rumble strip. And the winch includes a rotatable drum and a lead with a major dimension being a length dimension. A proximal end of the lead is connected to the drum such that rotation of the drum winds the lead about the drum. A hook is connected to a distal end of the lead opposite the proximal end. The hook is configured to engage and hold a portable rumble strip as the drum rotates to draw the lead and the hook to the winch, thereby drawing the engaged portable rumble strip into the carrier.

Abstract: The invention concerns a process for installation of an expansion anchor device, which is used to secure a part to the surface of a structural support member. The anchor device comprises an expandable sleeve (1), mainly extending along a longitudinal axis (X-X) with a proximal end (2) and a distal end (3), which is designed to be placed within a hole formed in the structural member that is designed to have the anchor applied thereto. In the process, once the hole has been formed in the support member and said anchor device has been placed in the hole, a step of orienting the sleeve (1) is carried out, such that the expansion of the latter occurs along the highest-resistance direction of the structural support member.

Abstract: A lifting and leveling assembly is configured to be embedded in a precast concrete slab for enabling a precast concrete slab to be lifted and leveled. The lifting and leveling assembly includes a threaded sleeve having a first end and a second end, a plurality of legs fixedly attached to and extending from the threaded sleeve, an end cap selectively covering the first end of the threaded sleeve, and a plate cover comprising an annular collar for releasably connecting the second end of the threaded sleeve to the plate cover.

Abstract: A lifting link (101) for anchors embedded in concrete panels is disclosed having a shackle (102) with a recessed cross bridge (151). A part circular latch (114) rotates within a chamber (105) of a hollow toroidal ring (104). The chamber has a circular longitudinal axis (119). The upper portion of the ring is formed into a U-shaped slot (113) through which a handle (115) of the latch (114) rotates. A transverse slot (109) accepts the head of anchor (6). The shackle bears against the exterior surface (103B) of the U-shaped slot (113). The radius of curvature of the exterior surface (103B) has a center which is not coincident with the center of the radius of curvature of the chamber axis (119). The part circular latch (114) extends through more than half a circle. Thus the center of lift (125) of the shackle (102) is worked away from the adjacent surface (10) of the concrete panel, thereby saving the surface (10) from damage during lifting.

Abstract: Disclosed is an attaching device for attaching stopping or lashing means to objects that are to be transported or tied down, comprising a fixing element (1), an attaching element (16), and a connecting element (15) which is rotatably mounted on a socket (4) wrapped around the fixing element (1) and connects the attaching element (16) to the fixing element (1). The connecting element (15) leans against ring flanges (6, 7) placed at the ends of the socket (4) via series of rolling bodies (12, 13) so as to allow said connecting element (15) to rotate without jerking and make it sufficiently tilt-proof.

Abstract: A jaw crusher liner handling tool includes a lifting eye having a radially extending shank and a radially extending lug, the lug including a hole parallel to the axis of the eye. The shank includes an elongate head on its end that is remote from the eye and is parallel to the axis of the eye.

Abstract: A mounting tool for use in safely lifting a heavy object such as a wind tower segment. Mounting tools may be provided in a kit that includes a tool that is especially adapted for attachment to the top of the object, and a tool that is especially adapted for attachment to the bottom of the object. Both the top and bottom mounting tools include a mounting bracket for removably mounting the tool to a mounting ring on a heavy object. To accommodate different bolt patterns in mating holes in the objects, the mounting bracket has a slotted mounting hole and two generally annular mounting holes extending therethrough. These mounting holes are arrayed along a common axis. A hoist ring assembly is mounted to the mounting bracket and includes a bail adapted for swiveling and pivoting movement to define a generally hemispheric envelope.

Abstract: A hoist ring assembly with expansion anchor includes an anchor subassembly and a rotatable and pivotable lifting loop. The anchor subassembly includes a bushing element, an engagement element and a retainer element. The bushing element has an anchor shaft extending along a major axis. The engagement element has a threaded bore extending long a bore axis which is approximately parallel to the major axis when the assembly is in assembled state. The threaded bore is adapted to threadably receive a threaded portion of the retainer element. The bore axis may be forced out of alignment with the major axis by way of a tightening rotation of the threaded portion with respect to the threaded bore, thus expanding the effective diameter of the combined anchor shaft and engagement element. The assembly is thereby releasably anchorable to a pre-drilled hole in a load to be lifted.

Abstract: A support structure for lifting precast blocks includes a longitudinal support arm having a cable suspended therefrom at a multiple suspension points. Several cradles are connected to the cable in positions such that each cradle is positioned between and below a pair of the suspension points. Each cradle may be attached to a sheave that movably connects it to the cable. Each cradle may receive a portion, such as a handle, of a lifting tool below the support arm.

Abstract: A lift stub with an elongated shaft member that has a longitudinal axis, a proximal end and a distal end. A lift eye element is spaced laterally by a lateral distance from the longitudinal axis, a first distance from the proximal end, and a second distance from the distal end. The lift eye element pivotally mounts a clevis member to the elongated shaft member for rotation about a clevis axis that extends generally normal to the longitudinal axis of the elongated shaft member. The clevis has a throat that is adapted to receiving a lifting hook therein. A foot portion extends from the distal end towards the proximal end for a third distance, which is approximately less than the second distance. A spur element projects generally laterally of the elongated shaft member adjacent the distal end and generally laterally opposed to the lift eye element.

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: A lift stub with an elongated shaft member that has a longitudinal axis, a proximal end and a distal end. A lift eye element is spaced laterally by a lateral distance from the longitudinal axis, a first distance from the proximal end, and a second distance from the distal end. The lift eye element pivotally mounts a clevis member to the elongated shaft member for rotation about a clevis axis that extends generally normal to the longitudinal axis of the elongated shaft member. The clevis has a throat that is adapted to receiving a lifting hook therein. A foot portion extends from the distal end towards the proximal end for a third distance, which is approximately less than the second distance. A spur element projects generally laterally of the elongated shaft member adjacent the distal end and generally laterally opposed to the lift eye element.

Abstract: A lifting ring assembly includes a shackle plate, a shackle operably associated with the shackle plate, and a lifting ring operably associated with the shackle. The lifting ring assembly further includes a biasing element operably associated with the shackle plate and the lifting ring for biasing the lifting ring away from the shackle plate.

Abstract: An omni-positional hoist ring assembly including a bushing element that includes a sleeve with an axial length, a proximal end and a distal end. A load bearing flange is radially disposed about the proximal end of the sleeve. The sleeve has an internal thread extending at least part way of the axial length of the sleeve. A mounting screw element has a major axis, a head, and a shank disposed generally co-axially around the major axis. The shank includes a threaded shank portion and a bearing portion. The bearing portion is a generally cylindrical axially extending portion of the shank that has a diameter approximately equal to the minor diameter of the thread in the threaded shank portion. A thrust washer element is provided between the head and the distal end of the sleeve. A body element receives the in-turned opposed ends of the legs of a lifting loop element in sockets. The lifting loop is free to pivot.

Abstract: A lifting link for anchors embedded in concrete panels is disclosed having a shackle with a recessed cross bridge. A part circular latch rotates within a chamber of a hollow toroidal ring. The chamber has a circular longitudinal axis. The upper portion of the ring is formed into a U-shaped slot through which a handle of the latch rotates. A transverse slot accepts the head of anchor. The shackle bears against the exterior surface of the U-shaped slot. The radius of curvature of the exterior surface has a center which is not coincident with the center of the radius of curvature of the chamber axis. Thus the center of lift of the shackle is worked away from the adjacent surface of the concrete panel, thereby saving the surface from damage during lifting.

Abstract: A lifting device for lifting a workpiece provided with a scissor-type linkage having two arms and two rod-like gripping arms connected thereto in an articulated manner. The lifting device also includes a cross member having at least two axially adjacent elongated holes extending in the axial direction of the cross member. The two gripping arms are each guided through an associated elongated hole and are rotatable around an axis extending transverse to the longitudinal direction and transverse to the through-direction of the associated elongated hole and it becomes. As a result, it becomes possible for the free ends of the gripping arms to tilt in an associated lifting opening of the workpiece, i.e., a cylinder head, when a workpiece is lifted.

Abstract: The invention relates to a lifting tool for prefabricated dwelling modules, specifically for industrialized modules having recesses (2) with frustoconical bases on at least one of the edges thereof, said recesses being provided with a metal coating (3) which co-operates with a base flat (4) having a central threaded hole in which a leveling screw (7) is inserted with play. The tool comprises a main body (8-8?) having the same general configuration and size as the recess (2) in the module (1). The main body is provided with a plurality of bolts (13-14, 13?-14?, 21) which can project from said body, the free outer ends of which terminate in a beveled edge (41-41?, 22) which facilitates the retraction of the bolts upon contact with the walls of the recess (2). The bolts are controlled by cams (16, 26-27) which move the bolts longitudinally in order to lock/unlock the tool in relation to the module (1) to be lifted.

Abstract: A generally X-shaped lift coupling for use with a conventional dovetail socket. One leg of the X-shaped lift coupling slides axially in a keyway in the other leg between a position where the lower end of the sliding leg is engaged with an angularly extending wall of the dovetail socket, and a position where the sliding leg is fully disengaged from the dovetail socket. A retainer holds the slidable leg in assembled relationship with the fixed leg. At least the fixed leg includes a lifting eye for engagement by a lifting member. The application of a lifting force to the lifting eye causes the lower ends of the legs to wedgedly engage the dovetail socket to lock the lift coupling to the dovetail socket. When the slidable leg is also provided with a lifting eye, the two eyes are generally in registry when the slidable leg is fully engaged with the dovetail socket. Insertion of a lifting member through both eyes locks the two legs together in an assembled configuration.

Abstract: An orientation apparatus for aiding the release of a lifting eye from a lifting anchor has a concave web with an open slot. The slot is configured to locate around a lifting anchor located within a hemispherical recess of a concrete element. The web is shaped to fit into the recess and so that a lifting eye, which engages the lifting anchor, can seat therein and be held so that its axis of rotation is prevented from rotating relative to the web. A shank which is integral with the web extends over a surface of the concrete element and away from the recess, and has a cable guide at a distal end trough which a cable, which is adapted for connection to the lifting eye and which can be pulled to rotate the lifting eye to a release position, is guided.

Abstract: A plastic insert for concrete structures includes a barrel for receiving a threaded fastener. According to one embodiment, the insert includes a housing at a distal end receiving an internally threaded member for engaging the threaded fastener. The insert includes bar-engaging members at the distal end for contacting concrete-reinforcing bars of the concrete structure. The insert also includes a bar-engaging member at the proximal end including a retainer defining a substantially semi-circular channel for receipt of a U-shaped portion of a bar. According to another embodiment, the insert includes a base at the distal end extending outwardly from the barrel to define an anchoring surface oriented perpendicular to the barrel axis. Longitudinal ribs on the barrel include segments arranged in series. Each segment of the rib extends radially to a distance that decreases with each succeeding segment such that each segment defines a bearing surface.

Abstract: A concrete anchor. The concrete anchor can be embedded within a concrete member to enhance lifting of the concrete member. The concrete anchor of the present invention can include a bar having a first end, a second end positioned adjacent the first end, and an intermediate portion curved to at least partially define an aperture. The aperture can be adapted to engage lifting hardware. The concrete anchor can further include a stem and a foot. The stem can include a first end coupled to the first end and the second end of the bar, and a second end coupled to the foot.

Abstract: The present invention relates towards an erection lift anchor with welding plate assembly for embedment in a concrete member, such as a precast or tilt-up wall. The erection anchor of the present invention allows for concrete members, such as walls, to be positioned by the use of standard lifting equipment (cranes with cable attachments, etc.) by connecting lifting attachments to the erection lift anchor which is embedded in a concrete member. The present invention also allows for concrete members to be connected together via the erection lift anchor whereby the welding plate of one erection lift anchor embedded in a first concrete member is welded to the welding plate of another erection lift member embedded in a second concrete member.

Abstract: A cable lock coupling is part of a surfboard locking system. The coupling includes a housing, a pin, a ring and jaws. The pin is slidably fitted in the housing and is movable between a first position and a second position. The ring is coupled to a first end of the pin, is sized/shaped to slidably fit only in a first portion of the housing, and is able to receive a cable lock's cable therethrough when it substantially protrudes from the housing when the pin is in the first position. The jaws, coupled to a second end of the pin, are free to open when the pin is in the second position, and are forced to close when the pin is in the first position. The cable portion of a cable lock is passed through the ring protruding from the housing when the pin is in the first position.

Abstract: An improved structure hoist-use base hoisting ring comprised of a U-shaped clevis movably suspended from the two sides at the lower end of a cylindrical base mount as well as a circular top mounting bushing at the upper section and a bottom mounting bushing at the center section having an upwardly projecting neck and a passageway that are situated over the top and bottom lateral surfaces of a bore through the interior portion of the cylindrical base mount, enabling the installation of a bolt into the top mounting bushing center section and downward through the bottom mounting bushing and the fastening and positioning of its threaded section into the threaded hole of a weight at the lower end. Among the features of the present invention, an annular recess is disposed along the top surface and center section of the cylindrical base mount that provides for the nesting of a flat planar bearing.

Abstract: An apparatus and method for lifting, rotating, and positioning heavy objects using a toggle device attached to a prime mover. The toggle is vertical at rest and can be inserted into the opening in the side of a pipe. The toggle is rendered horizontal inside the pipe by the activation of a solenoid and the pipe can then be lifted by the prime mover. The pipe can be rotated to any desired fixed position by a hydraulic cylinder moving a piston through a piston sleeve having spiral grooves. The entire lifting and positioning of a heavy object with the toggle device can be completed by a single user operating from within the prime mover.

Abstract: A lifting insert for prefabricated concrete components with a bracket for increasing the shearing strength thereof. The insert is embeddable in the body of the component proximate to one of the faces of the component so that one of its ends protrudes, or is otherwise accessible, from the face of the component so that it is engageable by lifting means. The bracket of the insert comprises at least one brace, which is connected to the insert and is also embeddable in the body of the component. The brace is constituted by a lamina that wraps around the insert in a scarf-like fashion with one of its portions.

Abstract: An anchor and hoist ring 10 is connected to an anchor assembly 12. The anchor and hoist ring has legs 20 that are integrally formed with the arms 18 of the ring and are canted upwardly and inwardly toward the bight section 16 of the ring 10. The ring is interlocked to the anchor assembly 12 via a swivel unit 50 that has bearing pockets 54 with bearing surfaces 54 that are complementarily sloped with the cant of the upper bight facing surface 64 of the leg to form a bearing surface thereto.

Abstract: A pulling iron facility for encapsulation in a concrete structure has an elongated strength member with an intermediate portion forming an upwardly extending loop. The strength member has opposed end portions extending laterally away from the loop. A sleeve at least in part encapsulates the strength remember, and includes a planar flange below at least a portion of the loop and defining an enclosed loop aperture. The sleeve includes a number of protrusions spaced apart from the flange.

Abstract: An object handling device includes a support body (32), and an elongate anchor body (40) mounted at the inner end thereof to the support body so as to project from the support body for insertion into an undercut cavity (28) in an object to be handled. At least one anchor lug (48a, 48b) at or adjacent to the outer end of the anchor body is movable with the anchor body between a first position in which the anchor body is able to be inserted into or withdrawn from the cavity, and a second position in which the lug(s) engage respective undercut shoulder portions (29) in the cavity. Means (42) on the anchor body is engagable for moving the anchor body (40) to move the anchor lug(s) between the first and second positions. Lift means (60) on the support body is engagable by a crane to lift the object. Lock means (50, 51) is provided to block movement of the anchor lug(s) from the second position. In one aspect, the anchor body (40) is rotatable to effect said movement of the anchor lug(s).

Abstract: A generally X-shaped lift coupling for use with a conventional dovetail socket. One leg of the X-shaped lift coupling slides axially in a keyway in the other leg between a position where the lower end of the sliding leg is engaged with an angularly extending wall of the dovetail socket, and a position where the sliding leg is fully disengaged from the dovetail socket. A retainer holds the slidable leg in assembled relationship with the fixed leg. At least the fixed leg includes a lifting eye for engagement by a lifting member. The application of a lifting force to the lifting eye causes the lower ends of the legs to wedgedly engage the dovetail socket to lock the lift coupling to the dovetail socket. When the slidable leg is also provided with a lifting eye, the two eyes are generally in registry when the slidable leg is fully engaged with the dovetail socket. Insertion of a lifting member through both eyes locks the two legs together in an assembled configuration.

Abstract: A hoist ring assembly for mounting on a load member includes a bolt having a circumferential recess, a support member having a bolt passage for receiving the bolt, and a pin passage transverse to and intersecting the bolt passage. A load bearing ring has legs aligned with the pin passage, and one or two pins are inserted into the pin passage so as to interengage with the recess to hold the bolt and support member against separation and to support the load ring for pivotal movement relative movement relative to the support member and for pivotal movement with the support member relative to the bolt. In one arrangement the pin passage is offset from the bolt passage and a single pin extends through the support member and engages in the recess of the bolt. In another arrangement, the pin passage opens into the recess on diametrically opposite sides thereof, and a pair of pins have inner ends received in the recess.

Abstract: An erection anchor having a forged unitary body that includes a substantially cylindrical shank with one end embedable in a concrete panel and an opposite end extending into a recess in an end of the concrete panel. The forged unitary body also has a substantially cylindrical foot integrally formed with the one end of the shank and a shackle-engageable, planar head integrally formed with the opposite end of the shank. The planar head has first and second opposed substantially planar surfaces and a boss integrally formed with the planar head and extending outward from the first planar surface. The boss provides bearing surfaces that interlock the erection anchor with the concrete panel.

Abstract: A lifting system for hoisting heavy pre-cast panels includes an anchor-lifting device permanently secured within a connection recess formed in the panel, and a connecting apparatus that attaches to the anchor-lifting device. The anchor-lifting device presents a laterally disposed connection pin for attachment to a pair of laterally spaced lifting hooks that form the connecting apparatus.

Abstract: An object handling device including a support body, and an elongate anchor body, having a proximal end, a distal end and a longitudinal dimension extending between the proximal and distal ends, the body is mounted at the inner proximal end thereof to the support body so as to project from the support body for insertion into an undercut cavity extending into an object from an edge or face of the object to be handled. At least one anchor lug at or adjacent to the outer distal end of the anchor body movable by rotation of the anchor body between a first position in which the anchor body is able to be inserted into or withdrawn from the cavity, and a second position in which at least one anchor lug engages a respective undercut shoulder portion in the cavity. Lever arm on the anchor body is engagable for moving the anchor body to move the at least one anchor lug between the first and second positions. A lift bar on the support body engagable by a crane to lift the object.

Abstract: A removable and reusable insert assembly for positioning and supporting a lifting system within a panel to be formed from cast concrete, the insert assembly having a left and right portion which are detachably removable from each other, and a lid that is secured over the insert. The lid protects an interior space of the insert assembly.

Abstract: A device used to simultaneously lift three concrete blocks from a pallet using a backhoe or crane and reposition them for exact placement on a wall. The device comprises a lifting bar that is suspended in a horizontally aligned position from a cable or chain connected to the shovel or hook on a backhoe or crane, respectively. Extended downward from the lifting bar are three block lifting assemblies. Each block lifting assembly includes two connecting rods that fit into vertically aligned holes formed on the concrete blocks. Each connecting rod is pivotally connected at its upper end to a short segment of chain or cable which pivotally connects to a rigid transfer plate. Each assembly also includes two long segments that pivotally connect to the upper edge of the transfer plate. The upper ends of the two long segments are spaced apart and pivotally connected to the lifting bar so that the long segments converge and are aligned diagonally when the connecting rods are placed inside the holes.

Abstract: A lifting device that simultaneously lifts a plurality of retaining wall blocks initially oriented in a triangular configuration on a pallet and allows them to be easily realigned in a linear configuration on a retaining wall. The lifting device comprises two pivoting lateral extending side arms with clamping units attached to their distal ends. Attached to the main planar frame is a central clamping unit. Each clamping unit includes an insert member that inserts into a large, vertically aligned hole formed in the block. When the clamping units are inserted into the hole and activated, three triangularly aligned sets of blocks on a pallet may be lifted. The side arms are designed to pivot rearward so that the front surfaces of the blocks are longitudinally aligned and the blocks are positioned in a side-by-side manner. Once properly realigned, the lifting device is lowered so that the three blocks are simultaneously placed over the top row of the retaining wall.

Abstract: A lifting ring for a load, comprising a carrying loop, a pivoting body and a smooth cylindrical pin. A peripheral groove is formed near the free end of the cylindrical pin and a radially expandable retainer ring is inserted in the groove. The pin is engaged and locked axially in a cylindrical housing integral with the body of the load. The cylindrical housing comprises a peripheral channel opposite the groove of the pin, in which the expandable retainer ring is inserted.

Abstract: A device used to simultaneously lift three concrete blocks from a pallet using a backhoe or crane and reposition them for exact placement on a wall. The device comprises a lifting bar that is suspended in a horizontally aligned position from a cable or chain connected to the shovel or hook on a backhoe or crane, respectively. Extended downward from the lifting bar are three block lifting assemblies. Each block lifting assembly includes two connecting rods that fit into vertically aligned holes formed on the concrete blocks. Each connecting rod is pivotally connected at its upper end to a short segment of chain or cable which pivotally connects to a rigid transfer plate. Each assembly also includes two long segments that pivotally connect to the upper edge of the transfer plate. The upper ends of the two long segments are spaced apart and pivotally connected to the lifting bar so that the long segments converge and are aligned diagonally when the connecting rods are placed inside the holes.

Abstract: A hoist ring for fixed engagement, in a mounted position, in a threaded bore on a load surface of a load member includes a load bearing ring, a support member and a post. The support member has a cylindrical passage having a first axis and further includes a ring slot to pivotally support the load ring and allow the load ring to rotate about a second axis perpendicular to the first axis such that the load ring freely adjusts to the direction of an applied force. The post has an unthreaded portion in the passage and the passage and the ring slot intersect for the unthreaded, portion of the post to interengage with the load ring to retain the load ring in the ring slot when the post is received in the passage.

Abstract: An apparatus for use in concrete construction is characterized by a body having a first portion configured to be set into concrete during the casting of that concrete, and which can be removed from the concrete after the concrete has set, and thereby may be reused in a similar manner with other concrete castings. The body of the apparatus is preferably generally cylindrical and preferably includes a serrated exterior surface. The body also preferably includes a second portion configured to facilitate removal of the apparatus from the concrete, and further includes an engagement member with which other devices may be engaged. The second portion may also be engageable with an alignment member to facilitate the accuracy of insertion and removal of the apparatus from the concrete. The serrated exterior preferably interferingly engages with at least one reinforcing element formed in the concrete, to assist in positioning of the concrete.

Abstract: An anchoring element for lifting prefabricated components, made of concrete, comprising a hollow body of a bayonet coupling device which forms a female seat with an access opening; the hollow body is embeddable in a component proximate to a perimetric side of the component so that the access opening is directed outward.

Abstract: The invention relates to an articulated ring for lifting loads, specifically through the attachment of a ring or rings to the load in such a way that the longitudinal axis of the ring and the direction of lifting form an angle of 0 to 90 degrees between them, comprising an attachment stud (13) designed to be assembled with one extremity bolted to the load being lifted and a ring (11, 12) moveable with respect to the stud (13) at the other extremity of the stud (13), the stud (13) being an anchor bolt having a head. A bushing (15) is provided with a flange (16) at one extremity, the flange extremity (16) being, in the assembled state, distant from the head of the anchor bolt (13). An attachment (14, 31) to attach the ring (11, 12) is provided and adapted to be pushed onto the bushing (15) and to attach the ring (11, 12) moveably to the bolt (13) and maintain it in position in cooperation with the flange (16) of the bushing (15).

Abstract: A side mount hoist ring assembly adapted to swivel through a full 360 degrees and pivot through a full 180 degrees that is more economical and simple to fabricate since the pivot axis is offset a distance from the swivel axis. The lift comprises a body, a cylindrical bushing, a load bearing flange, a closed lifting loop, and a threaded mounting member. Lifting loads exerted on the lifting loop induce bending stress on the mounting member which are compensated for by the load bearing flange.