Fan hub

Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing

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Details

416229R, 416241A, 416244R, F04D 2932

Patent

active

053990706

ABSTRACT:
A fan hub is disclosed which has a hub insert for securing a shaft against relative rotation in a secure manner. The hub insert can be manufactured simply through injection molding the hub to a non-circular hub insert so that the plastic flows around the hub insert to hold the insert securely within the shell. The central aperture of the hub has inner and outer coaxial cylinders forming an annular space that accommodates the front plate of a motor. Radial, curved vanes on and conforming to the inner surface of the hub also are provided for engine cooling and on the other side of the hub, a shallow, depressed region reduces undesirable turbulence.

REFERENCES:
patent: 4358245 (1982-11-01), Gray
patent: 4548548 (1985-10-01), Gray, III
patent: 4569631 (1986-02-01), Gray, III
patent: 4569632 (1986-02-01), Gray, III
patent: 4915588 (1990-04-01), Brackett

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