Patent ID: 8800220

Claim:
A recess insert for pre-cast Portland cement concrete shapes, the recess insert comprising: a one-piece quadrant-shaped body characterized by a longitudinal plane of symmetry, the quadrant-shaped body including a planar obverse wall characterized by an obverse plane, a planar contact wall characterized by a contact plane, and a convex curved wall, the walls collectively joined so that the longitudinal plane of symmetry bisects each of the planar obverse wall, planar contact wall, and convex curved wall; a perimetric flange integral with the quadrant-shaped body and coplanar with the obverse wall, beginning at the contact wall and transitioning to a triangular projection bisected by the longitudinal plane of symmetry, the perimetric flange characterized by a width adjacent the contact wall, and a depth of the triangular projection along the longitudinal plane of symmetry, the depth being greater than the width; the contact plane and obverse plane intersecting orthogonally along a contact line disposed orthogonal to the longitudinal plane of symmetry; the convex curved wall coupled with the planar obverse wall and the planar contact wall radially opposite the contact line; wherein a bilaterally symmetrical open channel traverses the planar contact wall and intercepts the convex curved wall at two locations for holding a lifting anchor; wherein a pair of quadrant-shaped bodies are mutually joinable along the planar contact walls to form the recess insert, define a closed channel to enclose a portion of a lift anchor, and define a 180° semicircular convex curved wall; and wherein the perimetric flange is supportable upon a concrete surface, whereupon each quadrant-shaped body is individually removable from cured concrete by lifting the triangular projection away from a cured concrete surface.