|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||215/271 ; 215/1C ; 220/1R|
|발명자 / 주소|
|인용정보||피인용 횟수 : 53 인용 특허 : 1|
A closure or cap for containers, bottles and jars having a circumferential groove formed by opposed conical surfaces of substantially equal size in the relaxed condition and upon compression of the closure forming a substantially toroidal circumferential groove. On a container sealed with the closure compressed, expansion of the circumferential groove to the relaxed condition indicates failure of the seal or generation of gases within the container. In an alternate embodiment the circumferential conical surfaces form a V-shaped circumferential protrusion...
A freshness and tampering indicator forming a portion of a closure and container having an outside wall and comprising, a circumferential pair of opposed conical sidewalls in the outside wall forming a bellow in the relaxed state, said conical sidewalls extending to at least one fold ring spaced from the outside wall and said conical sidewalls joined to the outside wall by fold rings, one of said conical sidewalls flexing from the relaxed to the compressed state to provide an overcentering of the bellow thereby providing a latching of the bellow, said la...