Abstract: A recess former is disclosed for use with anchors which are to be cast into a concrete slab. The recess former preferably includes a removable plug and preferably rectangular lugs which engage with corresponding apertures in the attachment head of the lifting anchor and prevent the ingress of cement during casting of the slab. In addition, flaps are preferably provided on the recess former to prevent the sides of the attachment head from being encased in the concrete. Preferably the former is pivoted between open and closed positions and has a slightly V-shaped base which when abutted against a mould or formwork, urges the recess former into the closed position. Furthermore, a recess former is disclosed which stays behind after the casting and remains embedded in the concrete in order to provide a waterproof membrane between the recess and adjacent reinforcing rods thereby preventing corrosion of the reinforcing rods.

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: A recess former is disclosed for use with anchors which are to be cast into a concrete slab. The recess former preferably includes a removable plug and preferably rectangular lugs which engage with corresponding apertures in the attachment head of the lifting anchor and prevent the ingress of cement during casting of the slab. In addition, flaps are preferably provided on the recess former to prevent the sides of the attachment head from being encased in the concrete. Preferably the former is pivoted between open and closed positions and has a slightly V-shaped base which when abutted against a mould or formwork, urges the recess former into the closed position. Furthermore, a recess former is disclosed which stays behind after the casting and remains embedded in the concrete in order to provide a waterproof membrane between the recess and adjacent reinforcing rods thereby preventing corrosion of the reinforcing rods.

Abstract: A recess former (30) is disclosed for use with anchors (35) which are to be cast into a concrete slab (61). The recess former (30) preferably includes a removable plug (36) and preferably rectangular lugs (57) which engage with corresponding apertures in the attachment head (34) of the lifting anchor and prevent the ingress of cement during casting of the slab (61). In addition, flaps (51) are preferably provided on the recess former to prevent the sides of the attachment head (34) from being encased in the concrete. Preferably the former is pivoted between open and closed positions and has a slightly V-shaped base which when abutted against a mold or formwork, urges the recess former into the closed position. Furthermore, a recess former (60-60I) is disclosed which stays behind after the casting and remains embedded in the concrete in order to provide a waterproof membrane between the recess (62) and adjacent reinforcing rods (58, 59, 71) thereby preventing corrosion of the reinforcing rods.

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 centre which is not coincident with the centre of the radius of curvature of the chamber axis (119). Thus the centre 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: 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 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 centre which is not coincident with the centre of the radius of curvature of the chamber axis. Thus the centre 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 recess former (30) is disclosed for use with anchors (35) which are to be cast into a concrete slab (61). The recess former (30) preferably includes a removable plug (36) and preferably rectangular lugs (57) which engage with corresponding apertures in the attachment head (34) of the lifting anchor and prevent the ingress of cement during casting of the slab (61). In addition, flaps (51) are preferably provided on the recess former to prevent the sides of the attachment head (34) from being encased in the concrete. Preferably the former is pivoted between open and closed positions and has a slightly V-shaped base which when abutted against a mould or formwork, urges the recess former into the closed position. Furthermore, a recess former (60-60I) is disclosed which stays behind after the casting and remains embedded in the concrete in order to provide a waterproof membrane between the recess (62) and adjacent reinforcing rods (58, 59, 71) thereby preventing corrosion of the reinforcing rods.

Abstract: An elongate substantially planar lifting anchor (61, 161, 261, 361) to be embedded in concrete panels (2) and the like is disclosed. The anchor (61, 161, 261, 361) has a through aperture (63) adjacent one end (65) and the other end (34) is adapted to form a mechanical interlocking anchor with the concrete of the panel (2) in which the other end (34) is embedded, wherein the through aperture (63) is shaped to simultaneously receive both a lifting shackle (28) and a reinforcing member (263). The concrete panel incorporates at least one of the abovementioned elongate substantially planar lifting anchors (61, 161, 261, 361) and a method of lifting a concrete panel (2) in which a lifting anchor has been embedded comprises the steps of: (i) passing the lifting anchor (61, 161, 261, 361) through the aperture (63), and (ii) lifting the shackle (28) to transfer load directly to the reinforcing member (263) and thereby raise the panel (2).