Patent · US Active

Filter element for an engine air filter assembly having a nonwoven pre-filter and related method

US11280299B2 · kind B2 · utility

0Cited by

3References

19Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Marcel Holzwarth · Fayetteville, US
Jerome Stiger · Kalamazoo, US

Key dates

Filing date	Dec 3, 2019
Grant date	Mar 22, 2022
Priority date	—
Expiry date	Apr 15, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2275/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter element for an air filter assembly of an engine includes a primary filter media and a secondary filter media. The primary filter media has a plurality of pleats having first fold edges on an inlet face of the primary filter media and second fold edges on an outlet face of the primary filter media. The first and second fold edges extend from a first lateral side to a second lateral side of the primary filter media. The secondary filter media is constructed of a non-woven material and includes a first portion arranged on the inlet face of the primary filter media, a second portion secured to the first lateral side of the primary filter media, and a third portion secured to the second lateral side of the primary filter media.

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