专利名称：Trickle vent
发明人：S. A. Cay Mahon新世纪大学英语综合教程3
申请号：US11191690
申请日：20050727
公开号：US07491120B1
公开日：猜拳脱脱小游戏
20090217
专利内容由知识产权出版社提供
母亲节快乐的英文
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摘要：A trickle vent such as might be ud in association with commercial windows is formed from PVC tubing in two convoluted paths. One or more expansion chambers are provided at turns or directional changes within the tubing which reduce or eliminate noi transmission through the vent. Where a plurality of expansion chambers are ud, each
功夫熊猫主题曲chamber may be of different length to dampen a different portion of the acoustic spectrum. In a preferred embodiment, the expansion chambers are filled with an acoustic-type foam, and the ends are not completely aled. The tubing preferably bridges two extrusions that form a supporting housing for the vent, and by using two parate extrusions bridged by the tubing, both thermal and acoustic isolation are maintained.
申请人：S. A. Cay Mahon
girlfriend 歌词地址：St. Cloud MN US
中文翻译成韩文国籍：US
mabelle代理人：Albert W. Watkins
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