Catch basin trap and mounting system

Abstract

A trap for a catch basin, and means for mounting said trap to a catch basin wall, comprises a hollow trap body having an inner wall and an outer wall, and side walls joining the inner and outer walls. The trap body has a first aperture near the top of its inner wall, allignable with an outlet of a catch basin, and a second aperture at a lower level on said trap body than said first aperture. A mounting plate is secured to the inner wall of the trap body, and has an aperture allignable with the first aperture of the trap body. A retainer plate is provided, onto which the mounting plate can be mounted. The retainer plate also has an aperture allignable with the apertures on the mounting plate and trap body.

What is claimed is: 
     
         1 . A trap for a catch basin, and means for mounting said trap to a catch basin wall, comprising:
 a hollow trap body having an inner wall and an outer wall, and side walls joining said inner and outer walls, said trap body having a first aperture near the top of its inner wall, allignable with an outlet of said catch basin, and a second aperture at a lower level on said trap body than said first aperture;   a mounting plate secured to the inner wall of said trap body, and having an aperture allignable with the first aperture of said trap body;   a retainer plate onto which said mounting plate can be mounted, said retainer plate having an aperture allignable with the aperture on said mounting plate.   
     
     
         2 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 1 , wherein said mounting plate has side edges that converge slightly from top to bottom, and said retainer plate has a wide channel formed in its outer surface to accommodate said mounting plate. 
     
     
         3 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 2 , wherein the side edges of said mounting plate and the inner edges of said channel formed in said retainer plate have complementary shaped profiles, whereby said mounting plate can frictionally engage said channel of retainer plate to remain attached thereto. 
     
     
         4 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 3 , wherein said mounting plate has an upper end shaped to fit in a recess formed in said retainer plate. 
     
     
         5 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 4 , wherein said mounting plate has a handle at its upper end. 
     
     
         6 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 5 , wherein said retainer plate is provided with preformed bolt holes for attaching said retainer plate to a wall of a catch basin. 
     
     
         7 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 6 , further comprising a gasket on an inner surface of said retainer plate. 
     
     
         8 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 7 , further comprising a gasket between said retainer plate and said mounting plate, around the aperture formed in said retainer plate. 
     
     
         9 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 3 , further including an adaptor connected to said retainer plate, said adaptor comprising a curved panel having a radius of curvature selected to match the radius of curvature of the inside surface of catch basin, and a cylindrical collar extending rearwardly from said curved panel, to the aperture in a retaining plate, said collar being welded around its perimeter to the inner edge of said aperture in said retaining plate. 
     
     
         10 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 9 , wherein said collar is provided with stiffening ribs on its outer surface. 
     
     
         11 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 10 , wherein said curved panel of said adaptor is provided with a gasket on its inner surface, and bolt holes for attachment to a catch basin. 
     
     
         12 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 1 , wherein said trap body is box-shaped, and said second aperture is located on the outer surface of said trap body. 
     
     
         13 . A trap for a catch basin, and means for mounting said trap to a catch basin wall as claimed in  claim 1 , wherein said trap body is circular, and said second aperture is located at the lower end of a tubular member extending at an incline downwardly therefrom, at a tangent to a side edge of said body.