Device for use in a blower configuration

Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Means to seal radial flow pump runner inlet from outlet

Reexamination Certificate

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Details

C415S174300

Reexamination Certificate

active

07101148

ABSTRACT:
A device for application in a fan configuration is configured, in particular, to be directly driven by an electric motor. In the fan configuration, a centrifugal fan wheel is mounted to rotate in unison with a drive shaft. The centrifugal fan wheel, for producing a directed airflow, is surrounded by a fan housing. A seal is disposed in an admission orifice, for largely filling in an air gap between the centrifugal fan wheel and the inner surface of the fan housing. Such a configuration improves the housing and sealing thereof for an application in a vacuum cleaner by having the sealing device be embodied as a sealing ring linked to a buffer part out of the fan housing, which part tightly surrounds the admission orifice.

REFERENCES:
patent: 6439843 (2002-08-01), Finkenbinder
patent: 2 109 409 (1972-09-01), None
patent: 197 17 154 (1998-10-01), None
patent: 198 55 905 (2000-06-01), None
patent: 19855905 (2000-06-01), None
patent: 1 048 261 (2000-11-01), None
patent: 07208390 (1995-08-01), None

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