Thompson, Birch, Gauthier & Samuels
Air control device
 An air control device regulates the amount of air flowing through an air passage bypassing a throttle valve place in an induction passage leading to an engine for an automotive vehicle so that the air flow can increase during warming up of the engine. A shutter mechanism for regulating the effective area for the air flow through the air passage is cylindrical, for example, including an inner cylindrical body and an outer cylindrical body which are rotatable to each other. 
Nissan Motor Co., Ltd.
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Masaaki
Saito