Patent ID: 6901610
Filing Date: 2005-06-07
Classification: E03D

Abstract:
1. A flush valve assembly for a water tank of a toilet, comprising: a valve body, said valve body including a base portion that is secured to said water tank, and a first cylindrical tube member that extends longitudinally upward from said base portion along a longitudinal axis of said valve body, wherein said first cylindrical tube member is concentrically defined relative to an annular support that supports an annular insert thereon and an annular base adjacent said base portion; a flush cover member having a predetermined length, said flush cover member being coaxially and slidably mounted with respect to said valve body so as to create a valve opening therebetween when said flush cover member is removed from said valve body; said flush cover member being slidably movable between a first rest position, wherein said flush cover member is seated on an inner peripheral flange member of said base portion of said valve body to obstruct fluid flow through said valve opening, and a second position, wherein said flush cover member is removed from said inner peripheral flange member to allow water to pass through said valve opening; and guiding means for properly guiding and aligning said flush cover member with respect to said valve body when said flush cover member is moved between said first and second positions; wherein said guiding means includes a second cylindrical tube member secured to said flush cover member which is slidably fitted over said first cylindrical tube member so that said flush cover member is properly guided and accurately aligned with said valve body when said flush cover member is moved between its said first and second positions; said guiding means further including at least one alignment tab on said flush cover member that remains in sliding engagement with at least one corresponding tab recesses defined in said valve body so as to enable longitudinal and central alignment of said flush cover member relative to said valve body.