Title:
Helicoidal fans
United States Patent 3168235

Inventors:
Jacques, Valdi Rene
Publication Date:
02/02/1965
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Assignee:
Lyonnaise, Ventilation
Primary Class:
415/220
Other Classes:
416/238, 416/242, 416/223A
International Classes:
F04D29/38
US Patent References:
2578806Propeller
2637487Blower
2795394Turbine blade arrangement
2811303Impeller for axial flow fans
2936948Axial blower with cone-shaped hub
3023709Vanes of an impeller for axial flow propeller pumps
3053325Aeronautical propeller
Foreign References:
FR422704A
FR820131A
GB127582A
GB537282A
NL15187C
CH101350A