Turbo fan vent

Details Turbo fan vent Turbo fan vent

1985-07-15

1987-02-10

Joyce, Harold

98 75, F23L 1710

Patent

active

046415718

ABSTRACT:
A turbo fan vent for use on the roof of a building and having a close-louvered low profile turbine affixed to a rotary shaft which is rotationally supported by bracing and bearing means associated with a lower concentric collar. The collar is spaced inwardly of said turbine and is vertically overlapped by the turbine. The rotary shaft carries a large fan blade assembly arranged within said collar. The collar has a diameter substantially less than the side wall of the turbine whereby to create a large passageway for effective air ventilation. The turbine is freely rotatable by wind currents to rotate the exhaust fan assembly to draw air upwardly through said collar and outwardly through the passageway. The collar is adapted to be mounted onto a complementarily shaped stack adaptor affixed to the roof of a structure and communicative interiorly thereof.

REFERENCES:
patent: 975636 (1910-11-01), Powers
patent: 1738526 (1929-12-01), Diebel
patent: 1993622 (1935-03-01), Peters et al.
patent: 2227852 (1941-01-01), Smith
patent: 2856838 (1958-10-01), Mack
patent: 3392659 (1968-07-01), Rovsey
patent: 3430550 (1969-03-01), Smith et al.
patent: 3739708 (1973-06-01), Felter
patent: 4086028 (1978-04-01), Felter

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