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US5489186A
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Housing with recirculation control for use with banded axial-flow fans
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WO9506822A1
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Housing with recirculation control for use with banded axial-flow fans
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US5423660A
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Fan inlet with curved lip and cylindrical member forming labyrinth seal
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US5342167A
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Low noise fan
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WO9305275A1
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Forward skew fan with rake and chordwise camber corrections
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US5151014A
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Lightweight airfoil
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WO9115664A1
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Space-efficient centrifugal blower
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US5156524A
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Centrifugal fan with accumulating volute
|
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WO9100212A1
|
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Lightweight airfoil
|
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WO9009526A1
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Centrifugal fan with airfoil vanes in annular volute envelope
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WO9009524A1
|
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Centrifugal fan and diffuser with accumulating volute
|
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US4946348A
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Centrifugal fan with airfoil vanes in annular volute envelope
|
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US5064345A
|
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Multi-sweep blade with abrupt sweep transition
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US5000660A
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Variable skew fan
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US4971520A
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High efficiency fan
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US4900228A
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Centrifugal fan with variably cambered blades
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US4917572A
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Centrifugal blower with axial clearance
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US4569631A
|
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High strength fan
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US4548548A
|
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Fan and housing
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US4569632A
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Back-skewed fan
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