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:
Jul. 27, 2010
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, Malmesbury, 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 inner and outer surfaces and a multiplicity of through-holes forming an outlet from the chamber. Each through-hole has an axis. The inner surface of the wall has a serrated profile having a plurality of serrations arranged around at least a part of the circumference of the wall, each serration having a first face and a second face. At least one through-hole passes through the first face of at least one serration. By providing a plurality of serrations around the inner circumference of the wall, the airflow is forced to follow a longer path through each through-hole for when compared to conventional arrangements. This reduces the amount of dirt and dust which is able to pass through the shroud.