Patent · US Active

Secondary filter element and filter arrangement

US11725615B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Dennis Stark · Mauer, DE
Michael Kaufmann · Dortmund, DE
Klaus-Dieter Ruhland · Meckenheim, DE

Key dates

Filing date	Jan 7, 2021
Grant date	Aug 15, 2023
Priority date	—
Expiry date	Apr 20, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M35/0245
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A secondary filter element for a filter arrangement is provided with a filter medium and a circumferentially extending sealing device that seals the secondary filter element in respect to a filter receptacle of the filter arrangement. The circumferentially extending sealing device has an oval geometry with a long side and a short side. The circumferentially extending sealing device has an outer surface projecting, in a radial direction of the secondary filter element, farther past the filter medium when viewed along the short side compared to when viewed along the long side. A filter arrangement has a filter receptacle. A main filter element is received in the filter receptacle, and a secondary filter element is received in the main filter element. The circumferentially extending sealing device of the secondary filter element projects in a radial direction of the secondary filter element outwardly past an interior of the main filter element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.