Box enclosure for electrical circuits

Claim 1

An electrical box enclosure of generally rectangular form comprising, a side wall member forming the four side walls of a rectangular box, said side wall being of substantially uniform height; a first generally rectangular cover plate for covering the top opening of said side wall membEr; a second generally rectangular cover plate for covering the bottom opening of said side wall member, a pair of internally threaded tubular rivets fastened to and extending through said second cover plate at diagonally opposite corners thereof, said rivets extending from said plate a distance less than said substantially uniform height of said side wall member, said first plate having openings therethrough at diagonal opposite corners corresponding to the position of said tubular rivets on said second plate, said second plate being positioned such that said tubular rivets are included within the opening of said side wall member and said first plate being fastened on top of said side wall member by screws extending through said openings in the plate and engaging the corresponding internally threaded tubular rivets positioning means extending from said rivets toward the adjacent corner of said cover plate to contact the internal walls of said wall member to position said first and second cover plates with respect thereto.