Electrical junction and switch boxes

Claim 1

A molded synthetic resin electrical service box open at one side thereof and comprising: at least two walls each intersecting a third wall at substantially a right angle and terminating in side edges opposite the edge intersecting said third wall and adjacent the boundary of the opening at one side of said box; a flange projecting normal to and secured to each of said two walls adjacent the open side of the box, each of said flanges defining and carrying a tubular portion, and each of said tubular portions defining a screw hole having its axis extending substantially parallel to the adjacent one of said two walls; break-out windows extending between pairs of intersecting walls at an acute angle to each of said intersecting walls, each of said break-out windows comprising: a removable panel in a surrounding opening spacing the panel from the remainder of the box; and means bridging across said surrounding opening and interconnecting the panel with said respective intersecting wall pair; and spring metal screw-retaining clips pressed into said flanges and each including a barb engaging a portion of said flange at a location adjacent said tubular portion; and flange means defining a screw shank receiving opening coaxial with the axis of said screw hole and bounded by the flange means for engaging the threaded shank of a screw extended into the screw hole defined by said tubular portion, and through said flange means-defined opening, with said threaded shank engagement occurring on opposite sides of said screw shank.