Patent ID: 7682508
Filing Date: 2010-03-23
Classification: B01D,F01M

Abstract:
1. An oil filter unit, comprising: a base configured to receive an internal combustion engine filter cartridge, said filter cartridge contained completely in a cup-shaped sealed casing and provided with apertures for the entry of the oil to be filtered and for the exit of the filtered oil, in a respective upwardly facing matching engagement seat provided with oil feed and discharge channels to be connected to the matching channels of said cartridge, a salient enveloping element peripherally associated with said engagement seat, said salient enveloping element and said engagement seat forming an oil spill protection compartment, a further conduit for recovery extending from the bottom of said oil spill protection compartment, said further conduit being connected to a collection site, a drain valve disposed in said further conduit for recovery, a closed or open state of the drain valve depending on a mutually engaged or disengaged condition of the filter cartridge and the engagement seat, respectively, said cup-shaped casing containing the filter cartridge, being connectable to said base by a hollow stem portion of said base, whereby said salient enveloping element envelops a portion of said cup-shaped casing when said cup-shaped casing is mounted on said base.