SPIKE PIN Russian patent published in 2020 - IPC B60C11/16 

FIELD: machine building.

SUBSTANCE: invention relates to the automotive industry. Stud pin 1 comprises housing 4 and rods 5 protruding from housing 4. Rod 5 has multi-stage structure, which includes multiple stages, including at least first stage 11 protruding from housing 4, and second stage 12 protruding from first stage 11. Multiple stages include N^th stage and (N + 1)^th stage, in which positions of centres of gravity G2 and G3 of their external forms differ from each other in top view.

EFFECT: technical result is improvement of running qualities on icy and snow-covered road surfaces.

4 cl, 10 dwg, 1 tbl