Portable and collapsible stacking bins or crates

Claim 1

A CRATE OR CONTAINER ADAPTED TO BE DISPOSED IN STACKED RELATION TO A LIKE CRATE OR CONTAINER AND COMPRISING A RECTANGULAR BOTTOM UNIT, A REAR WALL HINGEDLY CONNECTED TO THE REAR EDGE OF SAID BOTTOM UNIT, END WALLS HINGEDLY CONNECTED TO THE ENDS OF SAID REAR WALL, SAID END WALLS BEING PROVIDED WITH DOWNWARDLY PROJECTING PORTIONS ENGAGEABLE WITH SAID BOTTOM UNIT WHEN THE END WALLS ARE IN ERECTED POSITION PREVENTING OUTWARD SWINGING THEREOF, A FRONT WALL ASSEMBLY COMPRISING A PLURALITY OF SECTIONS, EACH SECTION HAVING VERTICALLY SPACED SUPPORTING MEMBERS FIXEDLY SECURED THERETO AND HAVING INWARDLY PROJECTING PORTIONS AT THEIR OUTER ENDS SUPPORTEDLY AND RELEASABLY ENGAGEABLE WITH SAID END WALLS, BOLTS ADJUSTABLY MOUNTED ON SAID FRONT WALL SECTIONS, SAID END WALLS BEING PROVIDED WITH KEEPERS WITH WHICH SAID BOLTS MAY BE ENGAGED WHEN SAID FRONT WALL SECTIONS ARE IN ERECTED ENGAGEMENT WITH SAID END WALLS, SAID FRONT WALL SECTIONS BEING REMOVABLE WHEN CRATES ARE DISPOSED IN STACK RELATION, AND LATERALLY SPACED LEGS MOUNTED ON SAID BOTTOM UNIT AND HAVING DOWNWARDLY FACING RECESSED PORTIONS SUPPORTED ENGAGEABLE WITH THE END WALLS OF AN ERECTED CRATE WHEN DISPOSED IN STACKING RELATION THERETO.