Patent ID: 7708258

Claim:
A tray comprising an inlet for an inward flow of liquid: a first portion defining an infusion field adjacent said inlet for receiving the flow of liquid and having at least two adjacent rows of infusion tab valves disposed therein to dissipate the momentum of the liquid flowing across said infusion field, each said valve including a horizontal floor of said tray, an opening in said floor for the passage of an ascending flow of vapor into contact with the liquid and a vertically upstanding wall adjacent said opening on a side closest to said inlet, said wall being of a height to obstruct a flow of liquid from said inlet cross said floor; a second portion adjacent said first portion for receiving a liquid/vapor mixture flowing from said first portion, said second portion having a plurality of openings herein for the passage of an ascending flow of vapor into contact with the liquid/vapor mixture flowing across said second portion; and an outlet adjacent said second portion and opposite said inlet for an outward flow of the liquid from said second portion.