Patent ID: 7128834
Filing Date: 2006-10-31
Classification: B01D,E03C,Y10S

Abstract:
1. In a sink having a sink drain for the discharge of debris, said sink drain including: a trap pipe with a first slip joint nut threadedly engaged on a debris receiving end; a drain line pipe having a tubular drain line flow space joined to said sink drain, said drain line pipe having a waste discharge end including a reduced diameter; a washer having an inside diameter substantially corresponding to said reduced diameter of said waste discharge end, said washer being pressed by the threaded engagement of said first slip joint nut with said trap pipe for forming a liquid tight seal; a side outlet pipe extending laterally from said drain line pipe, said side outlet pipe having a side outlet flow space extending from opposed sides of said tubular drain line flow space; a strainer having an elongated strainer body containing an array of apertures traversing said tubular drain flow space and said side outlet flow space for extracting and retaining debris occurring in said drain line flow space upstream of said side outlet pipe, said elongated strainer body having a debris retention floor bounded by laterally spaced upstanding strainer side walls interconnected by an annular upstanding strainer end wall, a terminal end closure plate joined with said debris retention floor and said laterally spaced upstanding strainer side walls, support rails extending from said upstanding strainer side walls, said elongated strainer body having a length sufficient to form an abutting engagement by said annular upstanding strainer end wall with an internal annular wall surface of said drain line flow space at the junction between said drain line flow space and said side outlet flow space, an aggregate area defined by the number and diameter of said array of apertures exceed the transverse cross sectional areas of said drain line flow space and said side outlet flow space; a second slip joint nut threadly engaged with said side outlet pipe to press said terminal end closure plate against said side outlet pipe for forming a fluid tight seal; spaced apart guides in said drain line flow space and said side outlet flow space for engaging said strainer support rails to resist movement of said strainer in said drain line flow space and said side; and an insert structure defining said spaced apart guides for placement in said side outlet flow space to engage said strainer support rails, wherein said insert structure comprises a flange having a central opening intercepted by opposed strainer support grooves formed within respective insert structure side rails for slidably engaging said strainer support rails.