Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
Reexamination Certificate
2006-04-25
2006-04-25
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
With sound or vibratory wave absorbing or preventing means...
C415S211200, C416S185000, C416S234000, C416S22900R
Reexamination Certificate
active
07033137
ABSTRACT:
A blower includes a blower housing having a chamber, an impeller rotatably received in the chamber, the impeller having a plurality of blades; and at least one resonator ring associated with one of the blower housing and the impeller. The resonator ring provides a plurality of resonator cavities for absorbing noise generated by the plurality of blades. The blower housing has an inlet opening and an outlet opening associated with the chamber; and a baffle assembly sub-dividing at least one of the inlet and the outlet openings.
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