Push-in closures

The closure of any one of the preceding claims, wherein said closure tab is severed from said container member except for said integral connection and is arranged in overlapping and underlying relationship with the aperture defined by the severing of said closure tab from said container member, and sealing material extending between at least the edge of said closure tab and said container member to hermetically seal said closure tab.

In a push-in easy opening closure in a container member, comprising a push-in closure tab formed integrally from a portion of said container member and defined by at least a weakening line, the closure tab being integrally connected to the container member by an integral connection about which the closure tab is bent during opening of the closure tab, the improvement comprising means located at or near the integral connection for increasing the effective bending radius of the integral connection during opening of the closure tab with bending of the closure tab about the integral connection.

A container member for use in a container for pressurized beverages, said container member including a push-in easy opening pouring closure and a smaller pressure releasing closure capable of being opened by push-in force, said pressure releasing closure being integrally connected to said container member by an integral connection about which the pressure releasing closure bends during opening, and means located at or near the integral connection for increasing the effective bending radius of the integral connection during opening of the pressure releasing closure.

In a container member for use in a container for pressurized liquid, said container member including a push-in easy opening pouring closure defined by at least a weakening line, and a smaller pressure releasing closure defined by at least a weakening line and capable of being opened by a push-in force, said pressure releasing closure being formed partly within said pouring closure and partly outside said pouring closure, said pressure releasing closure being arranged so as to be permanently opened when said pouring closure is opened to create an air venting passageway to assist in the venting of the contents of the container during pouring or drinking therefrom, wherein said pressure releasing closure is integrally connected to said container member and hinging about the integral connection during opening thereof, the improvement comprising means for increasing the effective bending radius of the integral connection during opening of the pressure releasing closure to prevent or reduce fracture of the integral connection upon opening of the pressure releasing closure and subsequent opening of the pouring closure with further displacement of the pressure releasing closure.