Patent ID: 8661758

Claim:
A seal assembly for sealing a core hole formed in a concrete slab having opposite first and second surfaces, with the core hole extending between the first and second surfaces, the seal assembly comprising: a cover plate that is configured for engaging the first surface of the concrete slab and seating over and covering the core hole, the cover plate being generally flat plate that is sized to completely cover the core hole at the first surface; and a lower plate that is configured for being received within the core hole, the lower plate being adjustably coupled to the cover plate through at least one threaded support member so that the lower plate may be selectively spaced apart from the cover plate at different positions, and wherein a cavity is defined within the core hole between the cover plate and the lower plate when the cover plate is seated over the core hole; an elongated threaded member that is coupled to the cover plate and extends from the cover plate through the core hole when the cover plate is seated over the core hole to a position below the lower plate; and a locking element that is coupled to the elongated threaded member below the lower plate, the locking element being configured for pivotal or rotatable movement between first and second positions about a transverse axis of the elongated threaded member, the locking element being sized to pass through the core hole while in the first position when the elongated member is passed through the core hole, and wherein the locking element is sized to prevent passage of the locking element through the core hole and to engage the second surface of the concrete slab when in the second position, the locking element being selectively movable axially or longitudinally along the length of the elongated member to facilitate securing the seal assembly to the concrete slab.