Tab and ecology end
AssigneeErmal C. Fraze
InventorsErmal C. Fraze, Omar L. Brown
Life of this patent
Estimating the term…
Abstract
A tab for easy opening ends including a lifting end and an opening end and spaced side legs is improved by the use of finger means extending from the opening end towards the lifting end, the finger means including flanges which stiffen the finger. The lifting end is formed of a smooth unbroken curl of sheet material.
Claims14
In a tab for use with an easy opening end structure wherein said tab is formed of metal sheet material, and which includes a lifting end and an opening end with an ear therebetween, the ear including an aperture through which a rivet may extend for attachment of said tab to an end wall, spaced side legs formed of a curled double layer of sheet material and extending between the opening end and at least to the rear of said ear, and wherein said opening end is formed of multiple layers of sheet material, the improvement comprising:
- one of the multiple layers forming the opening end of said tab including finger means extending towards the lifting end of said tab and positioned within the double layer of said spaced side legs, and
- said finger means including flange means extending lengthwise thereof to form ribs stiffing said tab along its length.
In an easy opening end wall of the ecology type for use with a container wherein the end wall includes a retained tab and a retained pour panel and wherein the tab initially functions as a class 2 lever initially to pop a portion of the scoreline and as a class 1 lever to complete fracture of the scoreline, an improved tab comprising:
- a body member having an opening end and a lifting end,
- the opening end being formal of multiple layers of sheet material,
- legs formed of curled sheet material extending from said opening end to said lifting end,
- one of the multiple layers of the opening end including finger means received and secured within a portion of the corresponding leg, and
- the lifting end of said tab which is contacted by the user's finger in an opening sequence being formed of a smooth unbroken curl of sheet material.
Dependencies are inferred from the claim text.