|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||215/344; 222/546; 222/547|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 5 인용 특허 : 14|
A cap 10 which has a female screw 14 in the inner peripheral surface and which is to be screwed on a port neck part 13 of a container main body 11 holding a predetermined liquid, wherein a plurality of ribs 18 radially extending astride from an inner surface of a top surface part 16 of the cap 10 to an inner surface of a peripheral wall part and integrally projecting inwards are formed on a peripheral edge part 17 of the inner surface of the top surface part 16. A female screw 14 is a screw in the form of two threads composed of spiral mated ridges 14a, ...
What is claimed is: 1. A cap to be attached to a port neck part of a container main body holding a liquid which contains a surface active agent, comprising: an annular inner ring part; and a plurality of ribs formed between the annular inner ring part and a peripheral edge part of an inner surface of a top surface part of the cap, the plurality of ribs including ribs with a first configuration of a first thickness and ribs with a second configuration of a second thickness, different from the first thickness, radially extending astride from the inner sur...