Fan construction and method of assembly

Details Fan construction and method of assembly Fan construction and method of assembly

1994-09-20

1995-12-19

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416219A, 416218, F01D 532

Patent

active

054763665

ABSTRACT:
This disclosure relates to a fan for an electric machine, the fan comprising a hub having a centrally located bore sized to receive the shaft of the machine, the bore having an axis which coincides with the shaft axis. The fan further comprises a plurality of angularly spaced fan blades which extend radially outwardly from the hub. The blades are formed separately from the hub and are secured to the hub by an improved interlocking joint arrangement. A series of hubs which are substantially identical except for the shaft bore diameter are provided, and a series of blades which are substantially identical except for the radial length are provided. Thus, a hub matching a specified shaft diameter, and a blade length matching a specified housing size, may be selected and assembled to match a machine.

REFERENCES:
patent: 612598 (1898-10-01), Wanless
patent: 2660400 (1953-11-01), Griffith
patent: 3073395 (1963-01-01), Duncan
patent: 4389161 (1983-06-01), Brumen
patent: 4669164 (1987-06-01), Phelps
patent: 4930987 (1990-06-01), Stahl
patent: 5354177 (1994-11-01), Chang

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