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US 5,655,884 AGranted
Flexible impeller with overmolded hub
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 overmolded 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.
Claims26
A fan impeller for a vacuum cleaner, 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, and wherein the hub is formed of a moldable material which is overmolded around the blades to securely retain the blades within the hub.
A fan for a vacuum cleaner, comprising:
- a fan housing for receiving an impeller, said fan housing having an inlet and an outlet for respectively receiving and discharging air;
- a shaft, rotationally driven by a motor, and secured to the fan housing;
- an impeller mounted on said shaft and received within said fan housing, for centrifugally drawing air from said inlet to said outlet, said 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 the shaft, wherein the hub is formed of a moldable material which is overmolded around the blades to securely retain the blades within the hub.
3 more elements
Dependencies are inferred from the claim text.