Threaded Sink Flange Assembly For Installation Of A Food Waste Disposer To A Sink

A threaded sink flange assembly for a food waste disposer, comprising:

• a threaded sink flange, a sink flange nut, an upper mounting flange and a retainer;
• the threaded sink flange has a top flange portion that extends radially outwardly from a top of a tubular body portion;
• the tubular body portion has an externally threaded portion and a plurality of radially outwardly projecting mounting ledges adjacent and above a lower end of the tubular body portion with gaps therebetween;
• the sink flange nut is internally threaded around a central opening with threaded portions interspersed with gaps, there being at least a gap corresponding to each mounting ledge with those gaps being wider than the corresponding mounting ledges;
• the upper mounting flange has an annular shape with a top having a central opening defined by an inner periphery of a ring;
• a plurality of mounting projections extend radially inwardly from the inner periphery of the ring with gaps therebetween wherein the mounting projections are received on the mounting ledges when the upper mounting flange is assembled to the threaded sink flange;
• an outer wall extends downwardly from an outer periphery of the top ring of the upper mounting flange;
• and
• a plurality of flanges extend downwardly from a bottom of the outer wall of the upper mounting flange with gaps therebetween so that there is a gap between adjacent flanges and each of these downwardly extending flanges has a radially outwardly extending inclined mounting ramp.