US Patent 10934700 Drain system for use with a tile floor

A drain system includes a support frame configured to support and position a drain cover over a drain opening in a tile floor. The support frame has a base portion and a wall portion projecting upwardly from the base portion to define a seat for the drain cover within the support frame. A release surface on the wall portion tapers and slopes inwardly from a top of the wall portion. The release surface is arranged to interface with the drain cover and reduce frictional and shear forces between the drain cover and the support frame during removal of the drain cover from the support frame.