Fan-fan drive assembly

Details Fan-fan drive assembly Fan-fan drive assembly

1978-01-20

1979-05-08

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Ambient fluid or exhaust gas directed through hub, fairing...

416169A, F04D 2932, F04D 2964

Patent

active

041533895

ABSTRACT:
A plastic fan configured for attachment to a fan drive in a manner in which cooling air will be promoted to flow from the rear of the fan drive across the rear fins of the fan drive and through the blades of the fan. The flow of air across the rear fins increases heat dissipation from the fan drive. The fan has a plurality of radially extending circumferentially spaced blades secured to an axially extending hub portion. The hub portion is configured to be radially spaced from the fan drive to define an annular passage. Further, the front edge of the hub portion is spaced rearwardly from the forward portion of the rear fins of the fan drive to define a slot for cooling air to flow substantially unrestricted through the annular passage and to the blades of the fan.

REFERENCES:
patent: 2620970 (1952-12-01), Palmer et al.
patent: 3303995 (1967-02-01), Boeckel
patent: 3385516 (1968-05-01), Omohundro
patent: 3627445 (1971-12-01), Andriussi et al.
patent: 3993415 (1976-11-01), Hauser
patent: 4064980 (1977-12-01), Tinholt

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