发明名称 HYBRID SPIN-ON FILTER
摘要 <p>A hybrid oil filter assembly including a housing (11), a first conventional oil filter (30) disposed in proximity to a bottom portion of the housing, and a second filter element (21) disposed circumferentially about a length of the first oil filter element (30). The second filter element (21) is formed of rolled paper andremoves particles from the oil of a smaller size than particles removed by the first filter element (30). Oil filtered by the second filter element (21) is directed to an interior of the first filter element via a communication path to mix with oil filtered by the first filter element (30).</p>
申请公布号 WO2002074415(A1) 申请公布日期 2002.09.26
申请号 US2002008403 申请日期 2002.03.18
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