Fan and hub assembly

Details Fan and hub assembly Fan and hub assembly

1988-12-29

1990-09-18

Price, Carl D.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Laminated, embedded member or encased material

416241A, 416134R, F04D 2938

Patent

active

049574140

ABSTRACT:
A fan and hub assembly (60) having a plastic fan structure (62) molded to a hub (66) to achieve a predetermined resonance frequency. The hub (66) has a plurality of integrally formed arms (84) having one of more openings (88) of a predetermined size and predetermined location for permitting the flow-through of the plastic and to achieve a predetermined resonance frequency of the fan blades (64). A plurality of openings (86) are formed in the hub body (82) to permit the flow-through of liquid plastic to achieve a strong attachment of the blade root (76) to the hub (66).

REFERENCES:
patent: 2317502 (1943-04-01), Upson
patent: 3642379 (1972-02-01), Swearinggen
patent: 3751181 (1973-08-01), Hayashi
patent: 4289449 (1981-09-01), Frister
patent: 4321013 (1982-03-01), Schwarz et al.
patent: 4605355 (1986-08-01), Davis et al.
patent: 4636142 (1987-01-01), Baranski
patent: 4671739 (1987-06-01), Read et al.
patent: 4762465 (1988-08-01), Friedrichs

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