|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/714; 220/717; 215/0115; 215/311; 222/482|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 43 인용 특허 : 150|
A drinking cup assembly including a cup having an open end; a cap adapted to enclose the open end, the cap including a drinking spout and an air vent and mating surfaces adjacent or incorporated into the drinking spout and the air vent; and a flow control valve including two stacks adapted to engage the mating surfaces, each of the two stacks having a concave valve face at a top portion thereof.
1. A drinking cup assembly comprising:a cup having an open end; a cap adapted to seal said open end, said cap having a drinking spout and a mating surface, said mating surface being in fluid communication with said spout; and a valving element that has a stack, said stack being sized and configured to engage said mating surface and thereby place said stack in fluid communication with said spout, said stack having a top portion with a concave valve face that extends substantially completely across said top portion and curves inwardly toward said stack.