|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||454/156 ; 454/121|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 9 인용 특허 : 2|
An air passage opening/closing system includes a case having a casing opening portion, and a film door having a plurality of door opening portions. The case has a thin portion extending from a peripheral portion of the casing opening portion in a moving direction of the film door. In the system, a distance between the peripheral portion of the casing opening portion and the film door is not smaller than 5 mm, the case has a thick portion connected to the thin portion, and the thick portion contacts the film door to have a predetermined friction therebetw...
[ What is claimed is:] [1.] An air passage opening/closing system comprising:a case for forming an air passage, said case having a casing opening portion through which air flows outside; anda film member, disposed under tension to be opposite to said casing opening portion at an upstream air side of said casing opening portion, for opening and closing said casing opening portion, said film member having a film opening portion which is tapered at both ends thereof in a longitudinal direction of said film member, wherein:said film member is controlled to m...