作者: Scott P. Charnesky , Brian D. Van Buren
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摘要: A variable-bias shutter system for controlling an airstream through entryway includes a plurality of louvers. Each louver has pivot axis and face that first portion arranged to one side second the other respective axis. The also mechanism configured select position by rotating in tandem each louvers about An area is exposed smaller than when substantially closed. Additionally, larger not vehicle employing disclosed.