Fan with rotatable grill

Details Fan with rotatable grill Fan with rotatable grill

1990-11-23

1992-07-21

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

416247R, F04D 2956

Patent

active

051318105

ABSTRACT:
A fan apparatus including a housing defining an air inlet opening, an air discharge opening; and a bearing surface; a fan blade rotatably mounted in the housing and adapted to provide air flow in a given direction between the inlet and discharge openings; and a deflector rotatably mounted in the discharge opening on the bearing surface and shaped and arranged to interrupt and redirect air discharged thereby, the deflector adapted to be rotatably propelled in the discharge opening by air discharged thereby. Also included is a resilient member engaged between the deflector and the housing and exerting therebetween a force establishing a level of friction between the deflector and the bearing surface. The resilient member establishes smooth and uniform rotation of the deflector.

REFERENCES:
patent: 910760 (1909-01-01), Wood
patent: 4120615 (1978-10-01), Keem et al.
patent: 4350472 (1982-09-01), Morimoto

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