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US Patent 6989039 Cyclonic separating apparatus

Patent 6989039 was granted and assigned to Dyson (company) on January, 2006 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee
Dyson (company)
Dyson (company)
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
69890390
Patent Inventor Names
Remco Douwinus Vuijk0
Date of Patent
January 24, 2006
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Patent Application Number
104746840
Date Filed
March 21, 2002
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Patent Citations Received
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US Patent 12102205 Hair care appliance with powered attachment
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US Patent 12065854 Pool cleaner with cyclonic flow
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Patent Primary Examiner
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Robert A. Hopkins
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Patent abstract

The invention provides a cyclonic separating apparatus that includes a plurality of cyclones, each having an inlet and being arranged in parallel with one another, and a passageway arranged upstream of the cyclones for carrying an airflow to the inlets of the cyclones, wherein dividers are provided in the passageway for dividing the airflow within the passageway into a number of separate flowpaths, the number of flowpaths being equal to the number of cyclones, and wherein the cross-sectional area of each flowpath (142a), decreases along the direction of air flow. The invention also provides a method of operating a cyclonic separating apparatus (100) comprising a plurality of cyclones (104), each having an inlet and being arranged in parallel with one another, and a passageway (142) arranged upstream of the cyclones (104), the method comprising the steps of:(a) introducing a flow of dirt-laden air to the passageway (142); (b) dividing the flow of dirt-laden air into a plurality of airflow portions, the number of airflow portions being equal to the number of cyclones (104); and (c) reducing the cross-sectional area of each of the airflow portions in the direction of flow of the dirt-laden air.

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