Multi-fan assembly comprising a servomotor driven vertical...

Details Multi-fan assembly comprising a servomotor driven vertical... Multi-fan assembly comprising a servomotor driven vertical...

2006-05-30

2006-05-30

Thorpe, Timothy S. (Department: 3746)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Irregular, flanged or channel forming blade surface

C416S099000, C416S100000, C416S110000, C416S123000, C416S130000, C416S005000, C417S423150, C417S423300, C417S423500

Reexamination Certificate

active

07052242

ABSTRACT:
A multi-fan assembly includes: a down rod assembly having a first end for fixing to a ceiling wall and having a second end provided with a canopy, a rotary assembly being fixed to a lower end of the down rod assembly and covered by the canopy. At both sides of the rotary assembly is provided with a fixed arm for connecting with a member fan respectively, a pair of vertical oscillating means are disposed between the fixed arm and the member fan, and a speed control device is mounted on the rotary assembly and then covered by the canopy of the down rod assembly.

REFERENCES:
patent: 1409090 (1922-03-01), Glasser
patent: 1577461 (1926-03-01), Glasser
patent: 4730981 (1988-03-01), Kawai
patent: 6364638 (2002-04-01), Liu
patent: 6772589 (2004-08-01), Schienbein et al.
patent: 6817830 (2004-11-01), Chen
patent: 6832902 (2004-12-01), Gajewski et al.
patent: 6913443 (2005-07-01), Chen

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