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:
Dec. 08, 2009
Filed:
Jun. 25, 2008
Ricardo Gomiciaga-pereda, Wiltshire, GB;
James Dyson, Wiltshire, GB;
Edward Charles Ormerod, Wiltshire, GB;
John Lee Gruenig, Wiltshire, GB;
Ricardo Gomiciaga-Pereda, Wiltshire, GB;
James Dyson, Wiltshire, GB;
Edward Charles Ormerod, Wiltshire, GB;
John Lee Gruenig, Wiltshire, GB;
Dyson Technology Limited, Wiltshire, GB;
Abstract
A cyclonic separating apparatus includes a chamber for separating dirt and dust from an airflow, an inlet to the chamber and a shroud. The shroud includes a wall having a multiplicity of through-holes forming an outlet from the chamber, each of the through-holes having substantially rectangular cross-sections with width to height ratios in the range of 1.5:1 to 1:1.5. The rectangular cross section of the through-holes maximizes the available through-hole area in the shroud, produces a low pressure drop across the shroud and reduces the amount of material required for manufacture. Further, this ratio allows the cross-sectional area of the through-holes to be dimensioned to prevent larger particles of dirt and dust from passing through the through-holes in the shroud, while still providing the required structural integrity.