Axial fan with blades that automatically adjust to the direction

Details Axial fan with blades that automatically adjust to the direction Axial fan with blades that automatically adjust to the direction

1983-10-19

1985-05-07

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

416140, 416189, 416241A, F04D 2936

Patent

active

045155119

ABSTRACT:
The invention relates to an axial fan with blades that automatically adjust to the direction of rotation. The fan blades are mounted with freedom to swivel on the fan wheel and are limited in their swiveling motion by stops which are provided on the fan wheel. In order to reduce the manufacturing cost of such an axial fan, spokes, to which the fan blades are fastened by means of film hinges are mounted on the fan wheel. The fan wheel is made from a single piece of plastic.

REFERENCES:
patent: 1882961 (1932-10-01), Saunders
patent: 2111817 (1938-03-01), Sherman et al.
patent: 2257976 (1941-10-01), Moorman
patent: 2609058 (1952-09-01), Place
patent: 3395761 (1968-08-01), Holzer
patent: 3758231 (1973-09-01), Barnstead
patent: 3812812 (1974-05-01), Hurwitz
patent: 3822103 (1974-07-01), Hori et al.
patent: 3915591 (1975-10-01), Aiki et al.
patent: 4396351 (1983-08-01), Hayashi et al.

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