|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B01D-039/08 B01D-046/12 B01D-046/10 B01D-046/52|
|미국특허분류(USC)||055/486; 055/385.3; 055/487; 055/488; 055/498; 055/502; 055/521; 055/524; 055/528|
|우선권정보||DE-20 2005 019 666 U(2005-12-14)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 0 인용 특허 : 13|
A filter device for filtering air in internal combustion engines equipped with a filter that can be inserted into a filter housing and has a flame-retardant effect. The filter comprises a main filter element and an upstream filter fleece whereby the flame-retardant effect is achieved by the fleece prefilter.
What is claimed is: 1. A filter apparatus for filtering air for an internal combustion engine, said apparatus comprising a flame-retardant filter insertable into a filter housing, wherein said filter comprises a main filter element and a fleece prefilter arranged upstream of the main filter element in the direction of air flow, and wherein the flame-retardant effect is achieved solely by the fleece prefilter, and wherein the fleece prefilter is secured to the main filter element via a sealing element which seals the filter apparatus to the housing. 2....