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US 5,064,087 AGranted
Self-opening can lid with improved contour of score
AssigneeKoch Systems Incorporated
InventorDouglas F. Koch
Life of this patent
Estimating the term…
Abstract
An easy-open container end includes a displaceable panel defined by a score line having curved tails which is in parallel relationship with adjacent means for reinforcing, thereby reducing opening failures, while controlling tearing. A score die and anvil is further provided wherein a four bolt pattern provides greater resistance to distortion and more even mounting stress distribution, resulting in more even score line residuals and reduced opening failures.
Claims12
An easy-open container end comprising:
- an end wall adapted for attachment to a container body;
- and
- a displacable panel defined in said end wall by a rupturable score line having first and second ends, and an unscored hinge area defined between said first and second ends connecting said panel to said end wall;
- said rupturable score line further including first and second tail portions at said first and second ends, respectively, curving inward towards said hinge area;
- whereby an opening tab may be pivoted to exert axial pressure on a portion of said panel and rupture said score line, separating said panel from said end wall, and displacing said panel by bending said hinge area.
2 more elements
Dependencies are inferred from the claim text.