Non-skid ice and snow tread configuration for pneumatic vehicle tires

Claim 1

A non-skid tread pattern configuration for a pneumatic vehicle tire for providing improved traction between the tread foot print and the roadway in all directions when ice and snow are present, said tread pattern comprising a roadway bearing surface having a plurality of laterally adjacent spaced annular cavities therein about the circumference thereof, each said cavity being defined by a radially inwardly extending annular wall merging at its inwardmost point into an annular recessed bottom wall, an upstanding radially outwardly extending pedestal disposed centrally of said bottom wall and in laterally spaced relation to said cavity annular wall, and, a suction cup carried by said pedestal, said cup having a radially outwardly facing concave surface terminating at its periphery in an annular rim disposed in laterally spaced relation to said cavity annular wall, said rim merging into a downwardly and radially inwardly extending annular rear suction cup wall connected to the said pedestal, and wherein said rim extends radially outwardly no further than said roadway bearing surface.