发明名称 Hybrid spin-on filter
摘要 A hybrid oil filter assembly includes a housing and a first (e.g., conventional) oil filter element disposed in proximity to a bottom portion of the housing. The first oil filter element contains an open inner volume. A second oil filter element having a generally circular cylindrical shape is disposed circumferentially about a length of the first oil filter element. The second oil filter element may be made of rolled paper and filters particles of a smaller size than the first oil filter element (e.g., down to about one microns, thereby providing micro-filtering of the engine oil).
申请公布号 US2004011715(A1) 申请公布日期 2004.01.22
申请号 US20030424448 申请日期 2003.04.28
申请人 ASSION NORBERT 发明人 ASSION NORBERT
分类号 B01D36/02;B01D27/14;(IPC1-7):B01D27/14 主分类号 B01D36/02
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