US Patent 8146308 Floor drain support plate

A drain support plate adapted to fasten to a receptacle body of a drain. The support plate includes a body having an inner surface and an outer surface and defining a first portion and a second portion. The first portion of the body defines a peripheral edge and the second portion of the body is attached to the peripheral edge of the first portion and axially extends therefrom. The inner surface of the first portion and the second portion of the body define an interior cavity. The first portion of the body defines a center passageway spaced radially apart from the peripheral edge and is adapted to receive a pipe. The first portion of the body defines at least one slot adapted to be aligned with the receptacle body for receiving a member for attaching the receptacle body to the body of the support plate.