OIL FILTER Russian patent published in 2005 - IPC

FIELD: automotive industry.

SUBSTANCE: invention can be used for cleaning oils in engines of automobiles and other vehicles. Filter has cover and housing accommodating main filtering element with central tube, bypass and antidrain valves, filtering elements of bypass valve and spring. Bypass valve filtering element is made in form of sector installed in main filtering element whose edges are connected with main filtering element, and bypass valve through central tube of main filtering element with outlet to its inner space. Main filtering elements, in each turn, can be formed by additional parallel-flow filtering elements in form of sectors with different fineness of cleaning whose ends are interconnected to form common filtering element. Side arrangement of bypass valve makes it possible to locate its filtering element with required area of filtration in main filtering element which reduces filtration load on main filtering element and increases period of effective cleaning. Provision of bypass valve filtering element in filter and main filtering element playing the part of safety valve makes oil filter reliable means of oil filtering and excludes lack of oil in engine under any operating conditions. Dispensing with separate subassemblies of bypass valve and its filtering element facilitates assembling of oil filter.

EFFECT: reduced labor input, metal usage and number of parts in filter.

3 cl, 2 dwg