초록 ▼

An improved easy open can end having a retained tear strip extending diametrically partly across the can and defined by a score line, and a graspable pull tab adjacent and outside the open end of the score line. The pull tab is attached to the can end by means of a rivet, the can end around the base

An improved easy open can end having a retained tear strip extending diametrically partly across the can and defined by a score line, and a graspable pull tab adjacent and outside the open end of the score line. The pull tab is attached to the can end by means of a rivet, the can end around the base of the rivet being deformed so as to slightly tilt the rivet toward the finger end of the pull tab. Accordingly, initial lifting of the pull tab is fully directed to the initial fracture of the score line immediately in front of the rivet, thereby ensuring desirable venting action of internal pressure and allowing opening of the can end with less effort.

대표청구항 ▼

In an easy open can end having a score line defining a tear strip, said score line being generally U-shaped with the open end of the U towards the center of said can end, said open end being interrupted so that said tear strip will be captively retained on the underside of said can end when torn ope

In an easy open can end having a score line defining a tear strip, said score line being generally U-shaped with the open end of the U towards the center of said can end, said open end being interrupted so that said tear strip will be captively retained on the underside of said can end when torn open, a rivet connected to said can end adjacent the open end of the U outside said score line, a pull tab secured to said can end by means of said rivet, said pull tab having a nose portion to initiate a tear along said score line upon lifting of said pull tab and a finger portion opposite said nose portion, and means for reducing force required to fracture said score line by causing the force to be applied substantially all in shear, said force reducing means including a plastically deformed portion of said can end at least partially around the base of said rivet, causing a tilt in said rivet toward said finger portion of said pull tab, whereby said pull tab, when initially raised, fractures said score line immediately in front of said rivet, causing said tear strip to bend downwardly along a transverse line in front of said rivet to allow venting of internal pressure, and when raised further, causes said score line to tear therearound, except for said interrupted portion thereof.