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US 4,044,915 AGranted
Container end closure
AssigneeAmerican Can Company
InventorsLeonard Thomas LaCroce, Charles Stephan Radtke
Life of this patent
Estimating the term…
Abstract
A full panel, easy-open container end closure includes a double-folded band formed in the removable panel adjacent the peripheral score, and an opening tab having a nose portion disposed adjacent the peripheral score and band. The tab is secured to a hinge section defined in the removable panel by a rupturable, bowed, generally U-shaped ancillary score which is disposed with its two ends adjacent the band and tab nose portion. This construction effectively reduces the intial rearward force required to effect panel removal.
Claims10
A container end closure comprising:
- a wall having an at least partially removable panel defined therein by a rupturable primary score, said panel having formed therein at least a portion of a double-folded band adjacent said primary score;
- an opening tab having a nose portion at one end and a handle portion at its other end;
- means for securing said tab, intermediate said end portions thereof, to the outer surface of said panel, so that said nose portion is disposed adjacent said primary score and said band portion;
- and a hinge section defined in said panel by a rupturable, generally U-shaped ancillary score, the loop portion of said ancillary score being disposed about said securing means with its two leg portions having end regions presented toward and terminating adjacent said band portion and said nose portion of said tab, so that lifting of said handle portion of said tab is operative to rupture said ancillary score through a region terminated by said band and elevate said hinge section while forcing said nose portion thereof downwardly to initiate rupture of said primary score, subsequent rearward force on said tab causing further rupture of said primary score to effect at least partial removal of said panel.
1 more element
A container end closure comprising:
- a wall having a removable panel defined therein by a rupturable primary score disposed adjacent the periphery of said wall, said panel having formed therein a double-folded band disposed on the outer surface thereof and adjacent said primary score;
- an opening tab having a nose portion at one end and a handle portion at its other end;
- a rivet formed integrally with said panel and securing said tab, intermediate said end portions thereof, to said outer surface of said panel, so that said nose portion is disposed adjacent said primary score and said band;
- and a hinge section defined in said panel by a rupturable, bowed, generally U-shaped ancillary score, said ancillary score having its loop portion disposed about said rivet with its two leg portions having generally convergent end regions presented toward and terminating adjacent said band and said nose portion of said tab, so that lifting of said handle portion of said tab is operative to rupture said ancillary score through a region terminated by said band and elevate said hinge section while forcing said nose portion thereof downwardly to initiate rupture of said primary score, subsequent rearward force on said tab causing further rupture of said primary score to effect complete removal of said panel.
1 more element
Dependencies are inferred from the claim text.