OIL SCRAPER RING Russian patent published in 2016 - IPC F16J9/06 

FIELD: machine building.

SUBSTANCE: invention relates to oil scraper rings. Oil scraper ring comprises a base body having a radial outer working surface, a radial inner circumferential surface, as well as an upper and a lower flank, which base body comprises at least two working surfaces, which are, if needed, provided with a wear-resistant coating, and which radially and conically taper from base body in direction of their end that faces a counter-working surface under a pre-determinable flank angle while forming legs and free end of working surfaces is at least partially beveled from an area on side of oil chamber in direction of an area on side of combustion chamber. Respective transition areas from beveled area, on one hand, and from legs into base body, on other hand, are rounded, wherein beveled area of walls of working surface is actively related to a cylindrical section which extends into direction of area on side of oil chamber, radius of a stripping edge present in cylindrical section is ranges between 0.02 and 0.2 mm and flank angle is < 18°, and width of respective cylindrical section is < 0.15 mm.

EFFECT: higher reliability of device.

12 cl, 1 dwg