Patent ID: 7621002
Filing Date: 2009-11-24
Classification: E03D,E03F

Abstract:
1. A system for draining liquids and/or light solids comprising: a first flange comprising a lip; a second flange comprising: a drainage pipe, wherein said second flange is configured to sit inside of said drainage pipe and wherein said second flange is installed into said drainage pipe and said first flange is installed into said second flange; a reshaped floor wherein said reshaped floor is configured so that said reshaped floor declines towards said drainage pipe; and whereby said first flange is installed into said second flange at an elevated position so that said lip of said first flange is spaced radially above said lip extending out from said outer wall member of said second flange creating a gap existing underneath said lip of said first flange and above said lip extending out from said outer wall member of said second flange.