Patent ID: 6715162
Filing Date: 2004-04-06
Classification: E03D

Abstract:
A water closet comprising:a toilet bowl assembly having a toilet bowl and a trapway extending from the bottom of the toilet bowl and adapted to be coupled to a sewage line, the toilet bowl having a rim channel along an upper perimetral portion thereof; and a water tank positioned over the toilet bowl assembly adapted to contain water used to initiate the siphoning from the toilet bowl to the sewage line and to refill the toilet bowl with fresh flush water after each flush operation, said water tank having a flush valve assembly comprising a valve body having a base sleeve portion for securement to the water tank and a flush cover member which is coaxially and slidably mounted with respect to said valve body so that a valve opening is created between the valve body and the flush valve cover when the flush valve cover is not seated on the, valve body; wherein said base sleeve portion of said valve body has an inlet at said valve opening with a radius incorporated onto a leading edge of said inlet to provide a lead-in angle and to thereby increase the water discharge coefficient of the valve opening; and wherein the flush water flows through the rim channel of the toilet bowl assembly in a flow path which is asymmetrical and unidirectional.