Closure and hinge system for waste-containing cases and implement for inspection opening

Claim 1

A closure system for a waste container, which comprises (A) a container body having a mouth defining an edge, and a wall of the container, having an interior surface, and an exterior surface, (B) a lid having a covering surface for covering said mouth, a peripheral first groove in the circumference of said lid, said first groove being open in a direction away from said covering surface and defining (Bi) an inner peripheral wall having an outer free end, and (Bii) an outer peripheral wall having an outer free end with peripherally spaced lockable detent projections at said outer free end thereof, said inner and outer peripheral walls being substantially perpendicular to said covering surface, (C) a sealing gasket within said first groove for having said edge contacting said gasket when said lid is tightly closed over said mouth, (D) a lateral extension at a periphery of said lid outwardly of said first groove and having a second groove in said extension, said second groove being open in a direction that is opposed to the direction of the opening in said first groove, said second groove being provided for accommodating a hinge for attaching the lid to said mouth, said hinge comprising a hinge pin that is attached to the exterior of said container, (E) a peripheral lateral extension formed on said container adjacent to its mouth and extending horizontally outwardly therefrom, said extension having a horizontal extension part ranging outwardly from the exterior surface and terminating in an outer end, and having an upper and a lower surface, and peripherally spaced openings therein, whereby, upon closing the lid over said mouth for firmly locking it in place, said peripherally spaced locking detent projections enter said peripherally spaced openings and said detent projections firmly lock said lid in place by said detent projections engaging said lower surface of said horizontal extension.