Drain cover for maintaining water at a predetermined height

Abstract

A drain cover and drain cover system are disclosed. The drain cover includes a flange portion that rests on a bottom of a body designed for use with running water, such as a bathtub or shower. The drain cover overlays a drain on the body to prevent water from going down the drain until the water exceeds a predetermined height in the body. Further, the drain cover does not require fasteners to maintain it in place, instead relying upon hydrostatic pressure applied to the drain cover by the water and friction between the drain cover and the body.

What is claimed is: 
     
         1 . A drain cover configured to sit over a drain in a body, the drain cover comprising:
 a substantially planar flange configured to sit on a bottom surface of the body and to extend around a circumference of the drain; and   an upper wall extending upwardly from the flange and configured to prevent water from going down the drain up to a predetermined height of the water, the flange and the upper wall defining an opening for permitting the water to go down the drain when the water exceeds the predetermined height,   wherein the flange and the upper wall are configured to be held in place over the drain by substantially only hydrostatic pressure applied by the water and friction between the flange and the bottom surface of the body.   
     
     
         2 . The drain cover of  claim 1 , wherein the flange and the upper wall are annular shaped. 
     
     
         3 . The drain cover of  claim 1 , wherein the upper wall tapers inwardly as the upper wall extends away from the flange. 
     
     
         4 . The drain cover of  claim 1 , wherein the upper wall defines an uppermost surface, and the uppermost surface comprises alternating peaks and valleys. 
     
     
         5 . The drain cover of  claim 4 , wherein the valleys are disposed at the predetermined height, relative to a bottom surface of the flange, such that the valleys are configured to permit the water to go down the drain when the water is at the predetermined height. 
     
     
         6 . The drain cover of  claim 1 , wherein at least a portion of an uppermost surface of the upper wall is disposed at the predetermined height, relative to a bottom surface of the flange, such that the at least a portion is configured to permit the water to go down the drain when the water is at the predetermined height. 
     
     
         7 . The drain cover of  claim 1 , wherein the flange and the upper wall are integral with one another and formed from a rubber or polyurea material. 
     
     
         8 . The drain cover of  claim 1 , wherein the flange and the upper wall are separable from one another. 
     
     
         9 . The drain cover of  claim 1 , wherein the flange comprises an upwardly extending connecting member for directly coupling with an inner portion of the upper wall. 
     
     
         10 . A drain cover system comprising:
 a body comprising a drain, the body being configured to receive water therewithin; and   a drain cover comprising:
 a substantially planar flange that sits on a bottom surface of the body and extends around a circumference of the drain; and 
 an upper wall extending upwardly from the flange and configured to prevent water from going down the drain up to a predetermined height of the water, the flange and the upper wall defining an opening for permitting the water to go down the drain when the water exceeds the predetermined height, 
   wherein the flange and the upper wall are configured to be held in place over the drain by substantially only hydrostatic pressure applied by the water and friction between the flange and the bottom surface of the body.