Patent ID: 8657344
Filing Date: 2014-02-25
Classification: E03B,E03F,Y10T

Abstract:
1. An adjustable coupling assembly for adjusting the height of a drain inlet for draining a fluid from an area, the assembly comprising: a first elongate tubular cylinder having a first end which is constructed to be attached to the inlet of a drain tile; a second elongate tubular cylinder having a first end which is constructed to be attached to the discharge of the drain inlet; said first tubular cylinder having an end which is constructed to extend into said second tubular cylinder; a spiral groove on the interior of said second tubular cylinder and extending over a substantial portion of the length of said second tubular cylinder; at least one projection on the exterior of said first tubular cylinder and positionable to extend into said spiral groove, whereby when one said tubular cylinder is rotated relative to the other said tubular cylinder, said projection moves along said spiral groove to adjust the total combined length of said first and second tubular cylinders and the height of the drain inlet; and openings through the walls of said first and second tubular cylinders.