Stud of a Tire
AssigneeNokian Renkaat Oyj
InventorsJuha Pirhonen, Mikko Liukkula, Tommi Ajoviita
Life of this patent
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Abstract
Disclosed is a tire stud comprising a stainless steel body with a flange and a blind hole and further comprising a spike installed in said hole, wherein the cross-sectional shape of the hole is different from the cross-sectional shape of the spike at least at one of: the opening, the lower surface of the spike, and a depth between the opening lower surface of the spike; whereby only protrusions of the spike are attached to the side wall of the hole with friction joints where the cross-sectional shape of the hole is different from the cross-sectional shape of the spike.
Claims8
A tire stud comprising
- a stainless-steel body comprising
- a flange at the bottom end of the body, wherein the cross-sectional shape of the flange is non-circular for orientating the stud in its installation hole in a tire, and
- a blind hole extending from an opening at the upper surface of the body towards the lower surface of the body and terminating with a floor;
- and
- a spike which is installed in said hole such that
- a lower surface of the spike is directed towards said floor, and
- an upper surface of the spike is directed away from said floor and is elevated with respect to the upper surface of the body,
- wherein
- the cross-sectional shape of the hole is different from the cross-sectional shape of the spike at least at one of:
- the opening,
- the lower surface of the spike, and
- a depth (h) between the opening lower surface of the spike,
- whereby only protrusions of the spike are attached to the side wall of the hole with friction joints where the cross-sectional shape of the hole is different from the cross-sectional shape of the spike.
Dependencies are inferred from the claim text.