Gopher Trap

Abstract

A perforated filtration insert includes a head unit and a body portion having perforated side walls. The body portion is closed at one end by a cap such that fluid entering the body exits through the perforations in the side walls of the insert.

What is claimed is: 
     
         1 . A perforated filtration insert comprising:
 a) a head unit having an inlet,   b) a body unit having an internal flow path and attached to the head unit and having perforated walls,   c) a cap secured to a bottom of the body unit and closing the internal flow path whereby fluid entering the insert from the head unit is forced through the perforations in the walls of the body unit.   
     
     
         2 . A perforated filtration insert as claimed in  claim 1  wherein the head unit further includes a handle. 
     
     
         3 . A perforation filtration insert as claimed in  claim 1  wherein the head unit includes one or more annular grooves on an outer surface and one or more O-rings positioned in the grooves. 
     
     
         4 . A perforated filtration insert as claimed in claimed in  claim 1  wherein the body unit is formed by rolling a flat sheet of perforated metal into a cylindrical shape and welding abutting edges together. 
     
     
         5 . A perforated filtration insert as claimed in  claim 1  wherein the head unit includes an enlarged flange adapted to engage a top of a tubular or vessel.