Floor boxes

Claim 1

A floor box for interconnecting underfloor wiring conduits comprising: a hollow upper body having a top wall and a plurality of side walls, the top wall having an opening to provide access to the interior of the box and adjacent side walls being disposed and spaced apart from one another to provide an upper opening and there being as many openings as there are side walls; a plurality of upper flanges respectively connected to and extending outwardly from the bottom of the upper side walls; a hollow lower body disposed beneath the upper body, the lower body having a bottom wall and a plurality of side walls, adjacent side walls being disposed and spaced apart one from another to provide a lower opening and there being as many openings as there are lower side walls; a plurality of lower flanges respectively connected to and extending outwardly from the top of the lower side walls and being respectively engaged with the upper flanges whereby the two bodies form a hollow box and the upper and lower openings being in vertical alignment whereby to provide an opening to receive, alternatively, a closure cap or a conduit adapter; a plurality of aligned apertures respectively in the upper and lower flanges; a plurality of fasteners, each fastener comprising a hollow body of substantial axial length extending through an aligned aperture, a top shoulder on the body extending over and engaging the upper flange and a bottom shoulder on the body extending over and engaging the lower flange, the two shoulders holding the flanges in tight engagement, and the interior of the body being threaded throughout its length; and a plurality of threaded leveling lugs respectively threaded to said fastener threads, the lugs providing for vertical adjustment of the box and said substantial axial length of the fastener body being for use in providing vertical support and adjustment for the box.