Metal contoured blade for a reversible ceiling fan

Details Metal contoured blade for a reversible ceiling fan Metal contoured blade for a reversible ceiling fan

1996-02-14

1996-11-19

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Reverse curve surface

416235, F04D 2938

Patent

active

055756247

ABSTRACT:
A ceiling fan is disclosed as including a reversible motor and a plurality of fan blades, each of which is contoured on both its upper and lower surfaces whereby the air flow is directed in accordance to the direction of rotation of the motor, and wherein the fan is located adjacent to its supporting ceiling.

REFERENCES:
patent: 1473066 (1923-11-01), Wells
patent: 1506937 (1924-09-01), Miller
patent: 1597175 (1926-08-01), Boening
patent: 1628716 (1927-05-01), Fischer
patent: 1818607 (1931-08-01), Campbell
patent: 2175609 (1939-10-01), Leeb
patent: 2609055 (1952-09-01), Monroe
patent: 3174681 (1965-03-01), Monroe
patent: 4892460 (1990-01-01), Volk

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