Fan

Details Fan Fan

1978-09-26

1981-02-17

Smith, Leonard E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Flexible

416241A, F04D 2932

Patent

active

042511895

ABSTRACT:
A fan blade has a protective beading on at least some of the edges thereof, the protective beading protecting against injuries while the fan is operating.

REFERENCES:
patent: 2033345 (1936-03-01), Lee
patent: 2107136 (1938-02-01), Zaiger
patent: 2251887 (1941-08-01), Larsh
patent: 2949092 (1960-08-01), Fortune
patent: 2962999 (1960-12-01), Fortune
patent: 3294315 (1966-12-01), Stewart et al.
patent: 3901625 (1975-08-01), Witzel

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