Truncated round electrical fixture box

Abstract

A modular interchangeable structural support ceiling fixture electrical housing box having a truncated cylindrical housing for mounting one or a plurality of electrical devices, such as ceiling lighting fixtures or smoke alarm devices. Each housing has at least one angled mounting bracket for fasteners, such as screws or nails, for attaching the housing box to a residential ceiling stud so as to permit interchangeable positioning within the housing. The box is interchangeable in that it can be used for either a new work box in new construction or for restoration.

1 . A modular structural support electrical work box to support a light fixture or an alarm device in a ceiling or wall of a building, said structural support ceiling fixture electrical work box comprising: 
 a truncated cylindrical housing including a round wall truncated by a flat sector stud bearing side wall intersecting said truncated cylindrical wall;    said housing of said work box containing a recess therein for insertion of ceiling fixture or alarm electrical components, including wires therein;    said structural support ceiling fixture electrical housing box further having at least one internal angled fastener mounting bracket therein for inserting a mounting fastener within a ceiling wall stud to provide a rigid fit of said housing box to said wall stud;    said at least one fastener mounting bracket accommodating at least one mounting fastener therein; and,    said at least one fastener mounting bracket being located internally within said housing box, said housing box being attachable to said stud bearing ceiling wall, said at least one fastener mounting bracket including an angled sheath for said at least one mounting fastener for mounting said structural support ceiling fixture electrical housing box within a ceiling wall of the building.    
   
   
       2 . The structural support ceiling fixture electrical work box as in  claim 1  wherein said at least one fastener mounting bracket comprises a plurality of fastener mounting brackets.  
   
   
       3 . The structural support ceiling fixture electrical work box as in  claim 1  further comprising a recess for the placement of electrical wiring therein.  
   
   
       4 . The structural support ceiling fixture electrical work box as in  claim 1  wherein the bottom surface of said housing is substantially flush with the surface of said ceiling.  
   
   
       5 . The structural support ceiling fixture electrical work box as in  claim 1  wherein said at least one fastener mounting bracket extending at an angle between 30 and 60 degrees perpendicular to the plane of said ceiling.  
   
   
       6 . The structural support ceiling fixture electrical work box as in  claim 5 , wherein said angle is about 45 degrees.