Blade apparatus

Details Blade apparatus Blade apparatus

1997-01-27

1999-04-06

Verdier, Christopher

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Openwork

416227A, 29428, 298896, 298897, 228144, 2281736, B63H 126, B64C 1116, F04D 2938, B01F 732

Patent

active

058908757

ABSTRACT:
A three dimensional figure eight propeller/impeller blade apparatus is provided which may be used to propel a vehicle, power a shaft, create a vacuum, or move a medium. The blade apparatus is made from an elongated strip of generally flat material. In one embodiment, the ends of the flat strip of material are joined together to form two loops having an overall three dimensional figure eight configuration. In forming the loops, the upper and lower surfaces of the flat strip of material are continuously maintained relative to each other.

REFERENCES:
patent: 1023699 (1912-04-01), Wilk
patent: 4293279 (1981-10-01), Bolie
patent: 4445817 (1984-05-01), Wethern
patent: 4472063 (1984-09-01), Eickelmann
patent: 5169055 (1992-12-01), Peterson et al.
patent: 5269647 (1993-12-01), Moser
patent: 5405246 (1995-04-01), Goldberg
patent: 5411330 (1995-05-01), Arutyunov et al.

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