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US 5,584,656 AGranted
Flexible impeller for a vacuum cleaner
AssigneeThe Scott Fetzer Company
InventorMitchell Rose
Life of this patent
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Abstract
A fan for a vacuum cleaner has a fan housing, motor and impeller. The fan housing has an inlet and outlet. The impeller has a hub and multiple flexible blades. This flexible blade fan provides better air performance, less noise, better durability, and easier impeller installation than conventional vacuum cleaner fans.
Claims8
A fan impeller comprising:
- a plurality of pliable blades for centrifugally displacing a volume of air upon rotation of the impeller;
- and
- a hub for retaining said plurality of blades, wherein said hub secures the impeller to a motor-driven shaft for producing rotation,
- wherein the hub comprises a hub case which axially receives a hub insert, said hub case including a plurality of slits which define a plurality of prongs, wherein each blade is looped around a respective prong and frictionally retained within the hub case by the hub insert.
1 more element
Dependencies are inferred from the claim text.