Wind direction controlling apparatus

Details Wind direction controlling apparatus Wind direction controlling apparatus

1992-10-23

1994-08-16

Joyce, Harold

Ventilation

Vehicle

Having inlet airway

454285, B60H 134, F24F 1315

Patent

active

053382510

ABSTRACT:
A wind direction controlling apparatus capable of reducing variations in the level of noise which can be caused when vertical fins are at reversal points of their swinging. A rod (17) for swinging vertical fins has a portion for friction-clutch engagement, the portion having a rounded configuration (17b) satisfying the relationship of P<Q between thicknesses. Thus, the frictional force of the friction clutch is reduced in such a manner that the force is at the minimum when the clutch is at the position corresponding to normal swinging. In this way, the load acting on a geared motor (8) at the time of reversal of the vertical fins is reduced, thereby reducing variations in the noise level.

REFERENCES:
patent: 4339991 (1982-07-01), Asano et al.

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