Air fan with lightly-constructed reinforcing fan blades

Details Air fan with lightly-constructed reinforcing fan blades Air fan with lightly-constructed reinforcing fan blades

1992-09-24

1993-09-14

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Apertured or permeable

416 5, 416 95, 416236R, 415119, F04D 2966, F04D 2958

Patent

active

052443493

ABSTRACT:
An air fan includes a plurality of fan blades each fan blade drilled with a plurality of perforations in the fan blade for reducing weight of each fan blade for reducing the electric energy required for driving the fan motor of the air fan. Each fan blade may be reinforced by at least a rib on a surface of each fan blade for enhancing its strength and preventing its deformation.

REFERENCES:
patent: D265681 (1982-08-01), Kan
patent: 2794509 (1957-06-01), Mix
patent: 4504191 (1985-03-01), Brown
patent: 4854374 (1989-08-01), Harrison
patent: 5154570 (1992-10-01), Yoshikawa et al.

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