Patent ID: 6959831

Claim:
A reusable sealable plastic drum comprising: a plastic drum body with a convex upper chine having a convex radius and with a side wall having a generally horizontal drum flange extending therefrom and disposed below said chine, the drum flange having a substantially planar upper surface; a plastic lid comprising: a panel; an annular, peripheral mating channel sized to accept said upper chine, said channel comprising: an inner wall extending generally upward from said panel; an outer wall having an upper portion thereof extending above said panel and a lower portion thereof extending below said panel; an annular, upwardly protruding lip disposed between said inner wall and said outer wall, said lip being in general alignment with said side wall; a mouth for receiving said upper chine, and a base surface for engaging said upper chine, said base surface having a concave radius, which is matched to said convex chine radius; a cover flange connected to said lower portion of said outer wall and extending radially and outwardly therefrom, wherein said cover flange is disposed below said panel, the cover flange having a lower surface to mate with said upper surface of said drum flange; and a lockband engaging said drum flange and said cover flange, wherein tightening said lockband upon said drum flange and said cover flange, downwardly draws said plastic lid, and radially inwardly compresses said outer wall, to cause said concave base surface to be pressed against said convex upper chine with sufficient pressure to cause said concave base surface to directly engage said convex chine in a sealing relationship.