Air passageway opening/closing device

Details Air passageway opening/closing device Air passageway opening/closing device

2005-09-09

2008-10-07

McAllister, Steven B. (Department: 3749)

Ventilation

Vehicle

Condensation preventer

C454S069000, C454S156000, C454S160000, C454S324000, C251S212000, C137S614110

Reexamination Certificate

active

07431638

ABSTRACT:
An air passageway opening/closing device provided with a plurality of sheet members provided with openings and passageway blocking parts located at the two sides of these openings, wherein the lengths in a direction of door movement of the openings differ by predetermined amounts, when an adjacent smaller sheet member moves in the direction of door movement by a predetermined amount, the smaller sheet member and the adjacent larger sheet member move together, the opening ranges of two air passageways are determined by a position of movement of an opening of the smallest sheet member to which a driving force is added, and the blocking ranges of two air passageways are determined by superposition of the passageway blocking parts of the plurality of sheet members in a stepwise offset state.

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