초록 ▼

An easy open can end having a retained tear strip extending diametrically part way across the can end defined by a score line of non-uniform depth, and a graspable pull tab, which may include fulcrum elements, one on either side of the center line of the pull tab, secured to the tear strip. Lifting

An easy open can end having a retained tear strip extending diametrically part way across the can end defined by a score line of non-uniform depth, and a graspable pull tab, which may include fulcrum elements, one on either side of the center line of the pull tab, secured to the tear strip. Lifting of the pull tab initiates tearing of the score line which may be continued to form an opening in the can end. When the pull tab is pressed inwardly to a stored position against the can end, if desired, the tear strip doubles back upon itself to form an arcuate portion in the tear strip lying beneath the surface of the can end which operates to relieve stress and prevent metal fracture of the tear strip which could cause the strip to become separated from the can end.

대표청구항 ▼

In a can end having a retained tear strip extending radially from approximately the center of the can end to near the can end rim, said tear strip being defined by a score line of keyhole shape having a rounded portion adjacent the can end rim, and a relatively narrow portion defined by two portions

In a can end having a retained tear strip extending radially from approximately the center of the can end to near the can end rim, said tear strip being defined by a score line of keyhole shape having a rounded portion adjacent the can end rim, and a relatively narrow portion defined by two portions of the score line terminating in spaced relation to each other so as to make said tear strip captive when torn open, said score line becoming shallower as it approaches the end of said portions, and disappearing entirely at the said ends, a pull tab secured to said tear strip by means of a rivet or the like adjacent the rounded end thereof within said score line, and having a nose to initiate a tear along said score line upon lifting of said pull tab, said pull tab, when raised, causing said tear strip to bend downwardly along a transverse line behind said rivet, initiating a tear in said score line and forming a first bend in said tear strip, said pull tab, when retracted, completing the opening of the end and forming a reverse bend in said tear strip adjacent said end, and said pull tab, if desired, when depressed against the top of said can end, causing said first bend to be flattened, and causing said second bend to form a third bend extending below the surface of the can end and having a radius of curvature greater than that of said second bend, said third bend providing a relief for said second bend to prevent breaking of said tear strip when flexed.