US 4,223,835 A · Traction pad

Abstract

A traction pad for use with vehicle tires on slippery road surfaces, the pad having a rectangular plastic mat portion with one end provided with a wedge shape. The tire facing surface of the mat, including the wedge portion, is provided with groups of substantially conically shaped projections. The opposite road facing surface of the mat portion is provided with like projections, with the wedge portion of the road facing surface being provided with longitudinal ribs. The size of the conical projections within each group is uniform, with one group size being larger than an adjacent group, the larger group being further from the wedge portion. A cooperating metallic starter plate is disposed on the wedge portions, being bent over the one end so that the conical projections on the wedge portion of the tire facing surface extend into openings in one side of the plate, and the ribs on the wedge portion of the road facing surface extend between grooves in the other side of the plate. Preferably, the plate is secured to the mat portion by rivets.

Claims9

Dependent claims

A traction pad for use with vehicle tires disposed on a slippery road surface, said pad comprising:

a substantially rectangular mat having a tire facing surface on one side and a road facing surface on an opposite side;
an end portion provided at one longitudinal end of said mat having said tire facing and road facing surfaces thereon;
friction means disposed on said tire and road facing surfaces of said mat for engaging said mat between a tire and the slippery road surface without relative slippage therebetween;
said friction means extending across said tire facing surface of said end portion but ending short of said road facing surface of said end portion;
guiding means disposed on said road facing surface of said end portion for direction control of the tire during movement of the tire onto said end portion;
a metal plate covering said tire and road facing surfaces of said end portion;
and
said plate being provided with finger-like portions for cooperating with said guiding means, said guiding means including longitudinally extending, projecting ribs disposed between said finger-like portions.

5 more elements

Dependencies are inferred from the claim text.

Traction pad

Life of this patent

Traction pad

Life of this patent

Abstract

Claims9