Engine cooling fan

Details Engine cooling fan Engine cooling fan

1974-06-17

1976-04-27

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Resilient bias or mount

416140, 416208, 416241A, 416 43, F04D 2936

Patent

active

039531490

ABSTRACT:
An automotive engine cooling fan assembly including asymmetrical plastic fan blades and a torsion bar interconnecting each blade to the hub of the assembly, the asymmetrical blades responding to both aerodynamic and centrifugal forces to reduce the pitch thereof at high fan speeds, the entire fan blade subassembly being rotated as a result of the twisting of the torsion bar.

REFERENCES:
patent: 2047776 (1936-07-01), Hafner
patent: 2146367 (1939-02-01), Berliner
patent: 2844207 (1958-07-01), Curley
patent: 3204702 (1965-09-01), Brown
patent: 3220484 (1965-11-01), Elmer
patent: 3260312 (1966-07-01), Elmer
patent: 3388749 (1968-06-01), Woods et al.

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