Fan unit

Details Fan unit Fan unit

2007-10-24

2011-12-20

Look, Edward (Department: 3745)

Rotary kinetic fluid motors or pumps

Plural runners supported for relative motion or on separate...

Serially spaced in working fluid flow path

C415S199500, C416S120000

Reexamination Certificate

active

08079801

ABSTRACT:
A serial axial fan unit includes first and second motors with their base portions, i.e., first and second base portions axially facing each other. A motor gap is arranged axially between the first and second base portions. An axial length of the motor gap is preferably in a range from approximately 0.3 mm to approximately 2.0 mm. This configuration reduces transmissions of vibration of each of the first and second motors to the other, thereby reducing vibration interference between the first and second motors.

REFERENCES:
patent: 6827549 (2004-12-01), Horng et al.
patent: 7052236 (2006-05-01), Chang et al.
patent: 7156611 (2007-01-01), Oosawa et al.
patent: 2008/0008576 (2008-01-01), Hong et al.

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