STUD TIRE Russian patent published in 2016 - IPC B60C11/16 

FIELD: motor vehicle industry.

SUBSTANCE: invention relates to automotive industry. Tire comprises tread, made of at least one rubber mixture and having tread surface, plurality of seats, open on tread surface through opening and containing stud. Openings on tread surface have maximum size of D0, when stud is in seat. Each stud has base, fixed in tread, tip protruding from tire for contact with ice, body connecting base and tip and having axis of symmetry, and longitudinal axis passing through body axis of symmetry. Tread enveloping stud forms stud fixing platform, and this platform, in its turn, is surrounded with cavity, open on tire surface, so, that volume of cavity, open on tread surface in radius larger than or equal to D0/2 and less than or equal to D0/2+2 mm, around pin longitudinal axis is less than or equal to 20 mm³. Volume of cavity, open on tread surface in radius larger than or equal to D0/2+2 mm and less than or equal to D0/2+4 mm, around stud longitudinal axis is greater than or equal to 60 mm³ and less than or equal to 100 mm³.

EFFECT: better tire adhesion with ice at reduced stud wear on asphalt.

10 cl, 17 dwg, 1 tbl