The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2007
Filed:
Feb. 12, 2002
David Stuart Harris, Monkton Farleigh, GB;
Benjamin Evans, Peterborough, GB;
Gordon James Howes, Bath, GB;
David Stuart Harris, Monkton Farleigh, GB;
Benjamin Evans, Peterborough, GB;
Gordon James Howes, Bath, GB;
Dyson Technology Limited, Wiltshire, GB;
Abstract
A vacuum cleaner comprises a cyclonic separator () for separating dirt and dust from an incoming airflow. A tool () and a suction conduit () connect the tool () to the separator (). The tool () comprises a main air inlet aperture for engaging with a surface to be cleaned and a bleed air inlet () for allowing air to bleed into the suction path. The bleed air inlet () is located such that it is separate from the main inlet. The cross-sectional area of the bleed air inlet () is sufficiently large that, in use, the bleed air inlet () 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.