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:
Apr. 01, 2003
Filed:
Sep. 24, 2001
Thomas Reinhold, Zaragoza, ES;
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter including a housing made up of two housing shells in the form of mating cylindrical vessels ( ) in one of which a support tube ( ), especially a support tube having a conical shape, is integrated. A conical annular filter cartridge, preferably one having a resilient axial play compensating element ( ) at one end, is installed on the support tube ( ). The housing shells ( ) are joined by a central screw connection ( ), and sealing between the housing shells is effected by a labyrinth seal ( ). The filter is able to adapt to tolerance variations in the axial length of the individual components, so that productions costs are kept low. The housing shells ( ) are constructed in such a way that they can be manufactured using simple casting molds with no undercuts. The occurrence of undercuts is avoided by designing the lattice-like support tube ( ) with a conical shape so that there is a radial distance “a” between adjacent circumferential struts ( ) of the support tube lattice.