Patent ID: 7186913

Claim:
A generally square electrical box for use in poured concrete construction by attaching the box to a concrete form, said box being molded of plastic material and having four sidewalls that intersect at corners, said box having a box front surface surrounding a box front opening and a box rear surface, attachment ears extending outwardly from said corners adjacent said front surface along diagonal lines that extend across diagonally opposite ones of said corners for receiving fasteners to attach the box to a concrete form with the box front surface facing toward the surface of the concrete form, said box front surface having a generally square outer periphery, said ears projecting outwardly beyond the square that is circumscribed by said outer periphery of said box front surface, said ears having fastener receiving holes therethrough in a direction between said front and rear surfaces, said fastener receiving holes being located outwardly of the square that is circumscribed by said outer periphery of said box front surface, said box having a central longitudinal axis and further including an adapter having adapter front and rear surfaces surrounding an adapter through opening, said adapter rear surface being positioned against said box front surface, said adapter having adapter attachment ears aligned with said box attachment ears, fastener receiving holes through said adapter attachment ears aligned with said fastener receiving holes in said box attachment ears, said fastener receiving holes in said box and adapter attachment ears being configured to receive fasteners that are inclined inwardly toward said box longitudinal axis, said adapter front surface being positionable against a surface of a concrete form for attaching the assembled box and adapter to the form when fasteners are driven into the form through the fastener receiving holes in the box and adapter attachment ears, the through opening in the adapter providing access to the interior of the box through the box front opening when the concrete form is removed following pouring and curing of concrete against the form surface over and around the box and adapter.