|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/269 ; 220/260 ; 220/270 ; 220/354|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 15 인용 특허 : 3|
A closure for a container wherein the closure is made of plastic and is attached to the container by means of a web and bead, the bead being held captive within a channel which is inscribed within the pour opening and the bead, providing a sharp edge and being arranged in such manner with the pull tab which is adapted to release the closure to concentrate the forces against a sharp cutting edge provided on the channel.
A closure for a pour opening in a wall of a container, a channel on the wall inscribed within said opening, a plastic closure having a body portion overlying the opening and a rupturable web extending from one side of said body portion into said channel, a retainer bead having a juncture with said web, said bead being positioned in said channel, said channel having a wall crimped about said bead and having a cutting edge imbedded into said bead at said juncture for severing said web attendant to said body portion of the closure being lifted for opening s...