초록 ▼

A carbonated beverage package comprising a container having an opening with a peripheral lip defining a free edge, and a downwardly and outwardly inclined sealing surface spaced from the free edge of the peripheral lip. A closure of plastic material, such that it will flex in thin cross section, is

A carbonated beverage package comprising a container having an opening with a peripheral lip defining a free edge, and a downwardly and outwardly inclined sealing surface spaced from the free edge of the peripheral lip. A closure of plastic material, such that it will flex in thin cross section, is provided with an annular wall, a radial wall engaging the free edge of the peripheral lip of the container, and a transverse wall defining a convex surface facing inwardly of the container. The closure has a downwardly and outwardly inclined integral annular sealing surface at the juncture of the axial wall and transverse wall which engages the sealing surface of said container and places the axial wall under tension. The closure has a pressure relief rib at the juncture of the radial wall and axial wall such that axial force in the area overlying the rib will move a portion of the annular sealing surface of said closure away from the sealing surface of said container so that the pressure in the container can be relieved through a pressure relief opening through to the atmosphere and the closure can therafter be readily removed from the container.

대표청구항 ▼

A carbonated beverage package comprising a container having an opening with a peripheral lip defining a free edge, said container having a downwardly and outwardly inclined sealing surface spaced from the free edge of said peripheral lip, a closure of plastic material such that it will flex in thin

A carbonated beverage package comprising a container having an opening with a peripheral lip defining a free edge, said container having a downwardly and outwardly inclined sealing surface spaced from the free edge of said peripheral lip, a closure of plastic material such that it will flex in thin cross section, said closure having an annular wall, a radial wall engaging the free edge of the peripheral lip of the container and a transverse wall defining a convex surface facing inwardly of the container, interengaging means between said radial wall and said container, said closure having a downwardly and outwardly inclined integral annular sealing surface at the juncture of the axial wall and transverse wall, said sealing surface of said closure engaging said sealing surface of said container and placing said axial wall under tension, said closure having a pressure relief rib at the juncture of the radial wall and axial walls such that axial force in the area overlying said rib will move a portion of said annular sealing surface of said closure away from the sealing surface of said container, said closure having a pressure relief opening through which the pressure in the container can be relieved to the atmosphere such that the closure can thereafter be readily removed from the container.