Patent ID: 6752435
Filing Date: 2004-06-22
Classification: E01D,E04C,F16L

Abstract:
A coupler apparatus for use with concrete segments comprising:a first duct having an end and an exterior surface; a first coupler member extending over and around said exterior surface of said duct, said first coupler member having an end opening adjacent said and of said first duct; a second duct having an end and an exterior space; a second coupler member extending over and around said exterior surface of said second duct, said second coupler member having an end opening adjacent said end of said second duct; a gasket means received in said end of said first coupler member and said end of said second coupler member, said gasket means for preventing liquid from passing between said ends of said first and second coupler members into an interior of either of said first and second ducts; and an external seal affixed in generally liquid-tight relationship to an opposite end of said first coupler member and affixed to an exterior surface of said first duct.