Patent ID: 6344137
Filing Date: 2002-02-05
Classification: E02D

Abstract:
A superimposed drain cover comprising:a tubular seat having a flange extending outward from bottom thereof, a plurality of triangular ribs formed spaced apart and connected to outer peripheral wall and top of said flange respectively, said ribs each including a suspending hole therein, a plurality of oblong holes formed spaced apart in said flange for securing said tubular seat to a drain top by means of screws, a first and second inner shoulders steppedly formed inside said tubular seat facing upward wherein said first inner shoulder is positioned within said second inner shoulder and a plurality of first positioning holes spacedly formed around top surface of said first inner shoulder and positioned on pair by pair basis; an outer ring engaged with top of said tubular seat having a first downward flange engaged with said second inner shoulder of said tubular seat, a pair of first notches respectively formed in opposing circumferences each including a first suspending rod therein and a tapered outer periphery thereof; a cobweb surfaced cover covering top of said tubular seat within said outer ring and having a bottom engaged with said first inner shoulder of said tubular seat and an outer periphery engaged with an inner periphery of said outer ring; a plurality of cushion pieces each having a pair of second positioning rods spacedly projected downward from bottom engageable with the first positioning holes of said tubular seat and a pair of second positioning holes spacedly formed in top and positioned in alignment with said second positioning rods; and a plurality of spare superimposed rings engageable between said tubular seat and outer ring and having a second downward flange engageable with said second inner shoulder, a third inner shoulder facing upward made in alignment with said second inner shoulder so as to be able to engaged with said first downward flange of said outer ring and a pair of second notches respectively formed in opposing circumferences thereof each including a second suspending rod therein.