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:
Mar. 17, 2009
Filed:
Jan. 22, 2007
Brian Lane, Hebburn, GB;
Raymond Francis Trowsdale, Consett, GB;
Brian Lane, Hebburn, GB;
Raymond Francis Trowsdale, Consett, GB;
Parker Hannifin Limited, Hemel Hempstead, GB;
Abstract
A filter element for removing material that is entrained in a gas stream comprising a wall of a filtration medium which defines a hollow space, for a gas stream to flow from the space through the wall. The filter element includes an end cap having an inlet tube extending into the hollow space for a gas stream to be supplied to the space, the inlet tube having a side wall extending between an upstream open end and a downstream open end. There is at least one opening in its side wall. The inlet tube has an upstream band, a middlestream band and a downstream band, the bands being axially adjacent to one another and non-overlapping. The bands have equal axial lengths of at least 5% of the length of the inlet tube, and are arranged such their planes are perpendicular to the axis of the inlet tube. The proportion of the area of the side wall that is open in the upstream band is smaller than that in the middlestream band, and the proportion of the area of the side wall that is open in the middlestream band is smaller than that in the downstream band.