OIL FILTER Russian patent published in 2019 - IPC F01M1/10 B01D27/08 

FIELD: engines and pumps.

SUBSTANCE: invention relates to the production of oil filters for internal combustion engines. Oil filter comprises housing (1), cover (2), amplifier (3) of cover, filter element (5), anti-drain valve (16) and bypass valve (14). Filtering element (5) includes filtering material (6) located between upper and lower end covers (7, 8), and lower end cover (8) of the filtering element is spring-loaded relative to housing (1) in the direction of pressing filtering element (5) to amplifier (3) cover. Anti-drain valve (16) is made in the form of a thin solid metal disc with central hole (17), is installed between amplifier (3) of cover and upper end cover (7) of filter element (5) and is elastically deformed, pressing one side to amplifier (3) cover, and the other side – to upper end cover (7) of filter element (5), forming sealing surfaces (18, 19).

EFFECT: invention reduces the cost of its manufacture and exclude the effect of hot oil on the characteristics of the anti-drain valve.

10 cl, 3 dwg