Burns, Doane, Swecker & Mathis, L.L.P.
Interlocking device for closing or opening the suction and exhaust ports in air conditioners
 An air conditioner includes a housing forming a lower air suction port and an upper air exhaust port, which ports are opened and closed simultaneously by a mechanism which includes first and second shutters movable vertically in parallel planes. The shutters carry respective rack gears which mesh with opposite sides of a motor-driven pinion gear, whereby the shutters move simultaneously in opposite directions. 
Samsung Electronics Co., Ltd.
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F24F F24F
additional inventional
Jeong-Hun
Seo