OIL FILTER Russian patent published in 2001 - IPC

FIELD: cleaning oil. SUBSTANCE: oil filter has housing, base, filter with spring and anti-drainage and bypass valves. Open side of housing has circular projection directed inside filter is provided with intermediate disk fitted with rim over perimeter and groove for sealing ring; it is also provided with sealing ring laid between disk; circular projection of filter housing and base. Base is provided with triangular lug at area where base is in contact with housing. Base is provided with projection for centering anti-drainage-bypass valve collar. EFFECT: filter ensures guaranteed cleaning of oil with no leakage at pressure of 25 atm; ease in disassembly and assembly. 2 cl, 3 dwg