Self-oscillating fan

Details Self-oscillating fan Self-oscillating fan

1974-02-11

1976-03-23

Husar, C. J.

Pumps

Motor driven

Pump and motor unitarily adjustable relative to fixed support

417423R, 416 79, 74 5R, 74 522, F04B 902

Patent

active

039457699

ABSTRACT:
A fan having a single degree of freedom to torsionally oscillate in a horizontal plane which in one version oscillates about a fixed vertical axis, self-excited by an aerodynamic couple created by feathering vertically disposed vanes which are symmetrically located adjacent the tips of the fan blades on the air inflow side thereof, and in another version which oscillates about a pendulous axis, self-excited by precession of the rotating fan and motor armature as a pendulous gyro.

REFERENCES:
patent: 755199 (1904-03-01), Wellman
patent: 1328255 (1920-01-01), Anderson
patent: 1647148 (1927-11-01), Roserman
patent: 1802108 (1931-04-01), Chessin
patent: 2650019 (1953-08-01), Lautner et al.
patent: 3608384 (1971-09-01), Hardin
patent: 3618403 (1971-11-01), Bilinski

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