Collapsible file container

Claim 1

A COLLAPSIBLE FILE CONTAINER FOR USE IN CONNECTION WITH A SUSPENSION FILING RACK, COMPRISING A SINGLE PIECE OF MATERIAL FORMING A PLURALITY OF SUBSTANTIALLY RIGID WALL ELEMENTS CONSTITUTING A BOTTOM WALL HAVING OPPOSITE SIDE EDGES, TWO SIDE WALL EACH HINGEDLY CONNECTED TO A RESPECTIVE OPPOSITE SIDE EDGE OF SAID BOTTOM WALL SO THAT SAID SIDE WALLS ARE LOCATED AT EITHER SIDE OF SAID BOTTOM WALL, SAID SIDE WALLS BEING SPACED FROM EACH OTHER AND EXTENDING IN SUBSTANTIALLY PARALLEL AND UPRIGHT RELATION WITH EACH OTHER, AND TWO REAR WALL SECTIONS EACH HINGEDLY SECURED TO A CORRESPONDING END OF A RESPECTIVE SIDE WALL DISPOSED IN A COMMON PLANE WITH EDGES THEREOF ADJACENT AND IN OPPOSITION; CONNECTING MEANS ENGAGING SAID REAR WALL SECTIONS AND COMPRISING AN ELONGATED PLATE PORTION ON THE INSIDE OF SAID CONTAINER AND ABUTTING AGAINST THE REAR WALL SECTIONS WITH WHICH IT IS TO BE ASSOCIATED, SAID PLATE PORTION HAVING ANGLE-LIKE FLAPS EACH WITH A SUBSTANTIALLY VERTICAL BACK, BENT OUT FROM THE MATERIAL OF THE PLATE PORTION; SAID REAR WALL SECTIONS HAVING NOTCHES AT THE ADJACENT EDGES HAVING SUBSTANTIALLY VERTICAL SIDE EDGES EACH ABUTTING A RESPECTIVE ONE OF SAID VERTICAL BACKS OF SAID FLAP WITH THE ASSOCIATED FLAP ENGAGING SAID REAR WALL SECTION ADJACENT THE VERTICAL SIDE OF SAID NOTCH, SAID NOTCHES ALSO HAVING OBLIQUELY EXTENDING SIDE EDGES FOR GUIDING AND CENTERING THE REAR WALL SECTIONS RELATIVE TO THE FLAPS OF THE PLATE PORTION; AND LOCKING MEANS ACUTING BETWEEN THE REAR WALL SECTIONS AND THE PLATE PORTION FOR SECURING SAID WALL ELEMENTS IN THE UPRIGHT POSITION, COMPRISING RECESS MEANS DEFINED IN THE REAR WALL SECTIONS AND DETENT MEANS EXTENDING FROM THE PLATE PORTION AND FITTING INTO SAID RECESS MEANS, SAID PLATE PORTION FURTHER INCLUDING A SUPPORTING FLANGE PORTION EXTENDING OUTWARDLY ADJACENT THE UPPER EDGE OF SAID PLATE MEMBER AND INCLUDING A DOWNWARDLY EXTENDING PORTION FOR SUPPORTING SAID PLATE MEMBER, WITH THE CONTAINER, ON A RACK.