Patent ID: 6691411
Filing Date: 2004-02-17
Classification: B25B,E03C,Y10T

Abstract:
A method of installing a wastewater drain assembly for a bathtub, comprising:inserting a generally L-shaped drain pipe having an upper end with an annular flange, a non-threaded inner end, and a threaded portion near the upper end through a drain hole of a bathtub, such that the annular flange, covered by a flat planar membrane of continuous construction that dwells in a single plane, rests on the bottom wall of the bathtub; slideably mounting a lock washer over the inner end of the drain pipe to the threaded portion and threadably tightening the lock washer against a lower surface of the bottom wall of the bathtub; connecting the inner end of the L-shaped drain pipe to a drain system; testing the drain assembly for water leaks; removing the membrane from the flange of the upper end of the drain pipe; and installing a drain closure into the upper end of the drain pipe.