Food service cart

Claim 1

A FOOD SERVICE CART COMPRISING A HOUSING DEFINING A COMPARTMENT ADAPTED TO REMOVABLY RECEIVE A TRAY HAVING A FOOD-RECEIVING SECTION DEFINING THE BOTTOM WALL OF SAID TRAY AND SURROUNDED BY A RIM, THERMAL BARRIER MEANS DIVIDING SAID COMPARTMENT INTO TWO THERMALLY DIFFERENT ZONES, SAID THERMAL BARRIER MEANS INCLUDING AN ELONGATED FIRST WEB HAVING A LOWER EDGE ADAPTED TO EXTEND ACROSS SAID COMPARTMENT AND THE RIM OF SAID TRAY WHEN SO IN PLACE, AN ELONGATED SECOND WEB EXTENDING ACROSS SAID COMPARTMENT VERTICALLY BELOW SAID FIRST WEB ADAPTED TO EXTEND ACROSS THE BOTTOM SURFACE OF SAID BOTTOM WALL OF SAID TRAY AND ENGAGING SAME WHEN THE TRAY IS IN PLACE, A DOOR MOUNTED ON SAID CART AND DEFINING A PORTION OF EACH OF THE ZONES OF SAID COMPARTMENT, ELONGATED SHUTTER MEANS VERTICALLY MOVABLE IN RELATION TO SAID FIRST WEB FOR VERTICAL SLIDING MOVEMENT, SAID SHUTTER MEANS TAPERING DOWNWARDLY AND INWARDLY AT ITS OPPOSITE