| 摘要 |
<p>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 preselected length about which such opener (30) rotates to provide continued lever action severance of such peripheral scoreline (34).</p> |
