Abuse resistant, safety-edge, controlled-opening...

B - Operations – Transporting – 65 – D

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190/143, 113/41

B65D 17/34 (2006.01) B21D 39/00 (2006.01) B21D 51/38 (2006.01) B23P 11/00 (2006.01) B65D 17/40 (2006.01) B65D 17/44 (2006.01)

Patent

CA 1317241

ABSTRACT OF THE DISCLOSURE A convenience-feature full-open end closure structure (27) with a shock-absorbing bead (45) located between a peripheral scoreline (34) which defines the end wall disc (31) to be removed from a recessed end wall panel (49). An arch-shaped back scoreline means with central vent portion (36) and legs (37, 38) is located within the removable disc (31) and co-acts with a longitudinally rigid (non- lanced) opener (30) which is made integral by a rivet (32) formed from sheet metal of disc (31). A multi- layer sheet metal fold (40) shields the raw edge of ruptured residual peripheral scoreline metal which remains with disc (31); and a multi-layer sheet metal fold (42) shields residual raw-edge metal remaining with container (94). The back scoreline central portion (36) is contiguous to and radially inward of rivet (32) and the pair of legs (37, 38) extend with a radially-directed component on opposite sides of the rivet toward the adjacent portion of the peripheral chime seam (92). Such legs (37, 38) intersect multi- layer fold (40) forming a chord (88, 90) of preselec- ted length about which such opener (30) rotates to provide continued lever action severance of such peripheral scoreline (34).

578752

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