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US Patent 7278181 Vacuum cleaner with air bleed

Patent 7278181 was granted and assigned to Dyson (company) on October, 2007 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Current Assignee
Dyson (company)
Dyson (company)
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7278181
Date of Patent
October 9, 2007
Patent Application Number
10468870
Date Filed
February 12, 2002
Patent Citations Received
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US Patent 12121198 Surface cleaning apparatus
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US Patent 11992167 Surface cleaning apparatus
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0
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US Patent 12070176 Surface cleaning apparatus
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US Patent 11666193 Surface cleaning apparatus with removable air treatment member assembly
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US Patent 11690489 Surface cleaning apparatus with an external dirt chamber
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US Patent 11700984 Configuration of a surface cleaning apparatus
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US Patent 11751733 Portable surface cleaning apparatus
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Patent Primary Examiner
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Theresa T. Snider
Patent abstract

A vacuum cleaner comprises a cyclonic separator (116) for separating dirt and dust from an incoming airflow. A tool (300) and a suction conduit (114) connect the tool (300) to the separator (116). The tool (300) comprises a main air inlet aperture for engaging with a surface to be cleaned and a bleed air inlet (310) for allowing air to bleed into the suction path. The bleed air inlet (310) is located such that it is separate from the main inlet. The cross-sectional area of the bleed air inlet (310) is sufficiently large that, in use, the bleed air inlet (310) admits a sufficient quantity of air to maintain adequate separation efficiency in the separator of the cleaner even when the main air inlet is fully blocked.

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