US 4,227,562 AGranted

Road traction apparatus

OwnerReginald J. Adairinventor

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Abstract

Vehicular road traction apparatus feeds a traction portion of an endless chain between a tire and the road surface and a recirculating portion of the chain is picked up aft of the tire and fed into a conduit which conducts it back to a point fore of the tire where it is fed continuously under the tire as the traction portion. The conduit is supported in position by arms and pivot pins so that the conduit may be moved between the aforesaid feeding position to a non-feeding position where the chain is held away from the tire. A cable moves the conduit between the two positions. The conduit may be hinged midway in its length so as to move its feeding and pick-up ends farther apart to stretch the chain taut in the non-feeding position. The conduit may be located outside or inside the tire. When located inside the tire, a skid plate and guide bar assist the supporting means to locate the feeding end of the conduit in proper feeding position.

Claims3

Dependent claims

Vehicular road traction apparatus for feeding an anti-skid element between a tire of the vehicle and the surface of the road comprising,

an anti-skid endless chain having a traction section for lying between a tire and the road and a recirculating section leading from aft of the tire to fore of the tire;
an arcuate tubular conduit leading from aft of the tire to fore of the tire movably enclosing and conducting said recirculating section of said chain from a point aft of a tire to a point fore of a tire;
means for supporting said conduit in position;
rotation of the tire over the traction section of said chain pulling said chain traction section from the conduit at a point fore of rotation of the tire with the movement of said traction section pulling said chain recirculating section through said conduit from a point aft of the tire;
said supporting means including a first pivot pin mountable on a vehicle adjacent a tire;
an arm having an end movably swung on said first pivot pin and an end fixed to said conduit;
a second pivot pin mountable on a vehicle adjacent a tire,
a second arm having an end movably swung on said second pivot pin and an end fixed to said conduit;
said first and second arms being fixed to said conduit at points spaced apart;
a cable connected to said conduit for raising said conduit from the position between a tire and the road to a position away from a tire where said chain is not fed under the tire and for lowerng said conduit to the position where said chain is fed under the tire;
said conduit being separated mid-way in its length and a hinged joint interconnecting said separated portions of said conduit;
said cable being attached to said conduit on one side of said hinged joint with the hinged joint transferring raising and lowering motion from said cable to the conduit on the other side of said hinged joint.

9 more elements

Dependencies are inferred from the claim text.