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US 8,413,400 B2Granted
Recess former for concrete panels
AssigneeWoodstock Percussion Pty Ltd
InventorRod Mackay Sim
Life of this patent
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AssigneeWoodstock Percussion Pty Ltd
InventorRod Mackay Sim
Estimating the term…
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.
A recess former assembly for a concrete panel cast in formwork, said panel having an anchor, said anchor having a head, a pair of major opposed surfaces, a pair of minor opposed surfaces, and at least one through aperture in the anchor head extending between said major opposed surfaces, the recess former assembly comprising:
Dependencies are inferred from the claim text.