Modified helicoidal wind responsive device

Details Modified helicoidal wind responsive device Modified helicoidal wind responsive device

1988-11-28

1989-07-25

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With means positioning fluid current driven impeller...

Offset relative to flow direction

416132B, 416176, 416240, 73188, F03D 106

Patent

active

048507989

ABSTRACT:
A wind actuated device which has a sail in the shape of a double or single modified helicoid. The device may be provided as a decorative novelty device or may be supported on a mast as a wind indicating device.

REFERENCES:
patent: 550552 (1895-11-01), Budd
patent: 893052 (1908-07-01), Carlson
patent: 996309 (1911-06-01), Carlson
patent: 1064695 (1913-06-01), Koning
patent: 4087990 (1978-05-01), Gillette
patent: 4152933 (1979-05-01), Woodhouse
patent: 4165468 (1979-08-01), Fry et al.
patent: 4207026 (1980-06-01), Kushto
patent: 4548073 (1985-10-01), Ludden
patent: 4624648 (1986-11-01), Waters
patent: 4708592 (1987-11-01), Krolick et al.

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