| 摘要 |
The transmission comprises two toothed pinions (8,9) connected by meshing with an intermediate external toothed rotating piece (10). The intermediate piece is a flexible crown wheel rotated by engaging its internal surface (10a) with pegs (13) fixed to a body (1) supporting the two pinions. The vehicle ventilator comprises an air duct (3) containing an adjustable rotating flap (6) connected to an operating knurled knob (8) by the gearing.
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