Container lid

A stacking container having a bottom, a first pair of opposed side walls, a second pair of opposed side walls, and a cover;

• said side walls and bottom wall being integrally joined together at their adjacent edges in one piece and being formed of molded synthetic resin to provide an open topped generally rectangular box;
• said cover consisting of two cover portions respectively hinged to the side walls of said one pair of side walls so as to have a closed position covering substantially the entire top of said box;
• each of said cover portions having three edges overlying respective uppermost edges of three adjacent side walls, and a fourth edge meeting with the fourth edge of the other cover portion;
• said cover, when in the closed position, providing a generally flat surface at least as large as and complementary in shape to said bottom wall;
• the fourth edge of each of said cover portions being crenellated, with a plurality of spaced teeth interengaging with corresponding spaced teeth of the other cover portion;
• each cover portion including a main planar sheet, hinge means along one of said edges opposite said fourth edge, and a depending vertical flange extending along the periphery of said teeth;
• a generally vertical lock flange extending generally parallel to said one edge of one cover portion between and connected to adjacent teeth at a position spaced from the base of said teeth away from said one edge;
• and
• the other cover portion vertical peripheral flange of at least two adjacent teeth having a notch therein spaced from the free end of the corresponding teeth a distance substantially equal to said spacing of said lock flange and receiving therein said lock flange of the one cover portion when said cover is in its closed position so that the cover portions are positively interengaged to prevent separation within the plane of said closed cover.

A stacking container having a bottom, a first pair of opposed side walls, a second pair of opposed side walls, and a cover;

• said side walls and bottom wall being integrally joined together at their adjacent edges in one piece and being formed of molded synthetic resin to provide an open topped generally rectangular box;
• said cover consisting of two cover portions respectively hinged to the side walls of said one pair of side walls so as to have a closed position covering substantially the entire top of said box;
• each of said cover portions having three edges overlying respective uppermost edges of three adjacent side walls, and a fourth edge meeting with the fourth edge of the other cover portion;
• said cover, when in the closed position, providing a generally flat surface at least as large as and complementary in shape to said bottom wall;
• the fourth edge of each of said cover portions being crenellated, with a plurality of spaced teeth interengaging with corresponding spaced teeth of the other cover portion;
• each of said hinge means defining a hinge axis about which its cover portion pivots;
• each of said teeth including, as viewed in a plane parallel to said cover in its closed position, a head at its outer end, a neck portion immediately adjacent said head and of a width, as measured parallel to said axis that is substantially less than said head portion, and a remainder that first increases in width and then decreases in width to the tooth base so that each tooth and the space between adjacent teeth are mirror images of each other with respect to a line parallel to and midway between the axes of said cover portions, and each tooth being substantially the same shape as the space between adjacent teeth of the opposed cover portion within which it fits in the closed position.

A stacking container having a bottom, a first pair of opposed side walls, a second pair of opposed side walls, and a cover;

• said side walls and bottom wall being integrally joined together at their adjacent edges in one piece and being formed of molded synthetic resin to provide an open topped generally rectangular box;
• said cover consisting of two cover portions respectively hinged to the side walls of said one pair of side walls so as to have a closed position covering substantially the entire top of said box;
• each of said cover portions having three edges overlying respective uppermost edges of three adjacent side walls, and a fourth edge meeting with the fourth edge of the other cover portion;
• said cover, when in the closed position, providing a generally flat surface at least as large as and complementary in shape to said bottom wall;
• the fourth edge of each of said cover portions being crenellated, with a plurality of spaced teeth interengaging with corresponding spaced teeth of the other cover portion;
• at least one foot member depending integrally from each of said cover portions a substantial distance below the remainder of said cover portion in said closed position immediately below the space between adjacent teeth of its cover portion for each of said cover portions so that the bottom of said foot member will engage the top of the corresponding tooth of the opposed cover portion if said opposed cover portion is moved into its closed position prior to the cover portion of said foot member to prevent said cover portions from assuming said closed position unless they are simultaneously closed.