Importance

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Abstract

A three-position stacking tray having a series of angled ribs on each side of the tray which comprise the tray's sidewalls. Each sidewall's ribs are all parallel one to the other, are of identical structure and size, and are all in a common vertical plane relative to the floor. The angled ribs of one sidewall are disposed in mirror relation with the angled ribs of the other sidewall as to orientation and position. Each rib of each sidewall's angled ribs, on the same side edges thereof and intermediate the top and bottom ends thereof, is provided with a notched middle seat adapted to cooperate with a top seat on an opposite sidewall rib's top end when the trays are reverse oriented. In the intermediate stack position, and with upper and lower trays reverse oriented, the top end seats of the lower tray's angled ribs engage the notched middle seats defined in the upper tray's angled ribs. Preferably, the bottom end seats of the upper tray's angled ribs also abut side edges of the lower tray's angled ribs intermediate the ends thereof, the upper and lower trays being prevented against motion in one direction parallel to the sidewalls by engagement of the upper tray's notched seats and the lower tray's top end seats, and being prevented against motion in the opposite direction parallel to the sidewalls by engagement of the upper tray's bottom end seats and the side edges of the lower tray's angled ribs. To achieve this intermediate stack position, a vertically in-line but reverse oriented upper tray is assembled in a vertical downward stroke with the lower tray.

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First Claim