Dishwasher tub bottom wall construction

An improvement in a dishwasher having a tub comprising a bottom wall, a top wall, a front wall, a rear wall, and two sidewalls, said front wall having a door opening therein, a door being hinged to said tub for hinged movement from a closed position in covering relation over said front opening of said tub to an open position providing access to the interior of said tub through said front opening, pump means mounted to said bottom wall and having an inlet for taking washing fluid into said pump means, and spray means connected to said pump means for receiving washing fluid therefrom and for spraying said washing fluid into said tub to effect the washing of dishes within said tub, said bottom wall comprising a front edge, a rear edge, and two opposite side edges, said improvement comprising:

• said bottom wall being formed into a sump basin having an upper rim extending around the perimeter thereof, said upper rim having a rear portion spaced inwardly from said rear edge of said bottom wall, opposite side portions spaced inwardly from said opposite side edges of said bottom wall, and a front portion spaced inwardly from said front edge of said bottom wall;
• said upper rim of said sump basin forming two spaced apart leg portions of said basin, said leg portions extending forwardly into close proximity to said front wall of said tub;
• said pump means being mounted to said bottom wall within said sump basin with said inlet of said pump means positioned to communicate with washing fluid within said sump basin;
• said bottom wall having front, rear, and opposite side margins sloping from said upper rim upwardly and outwardly to join said front wall, said rear wall, and said opposite sidewalls respectively whereby washing fluid sprayed from said spray means will drain by gravity down said sloping front, rear, and opposite side margins of said bottom wall into said sump basin.