SLIPPAGE-PREVENTION AID OF DUAL TIRE SPACE ATTACHMENT

PROBLEM TO BE SOLVED: To make the surfaces of both ends of a grounding surface of a slippage-prevention aid of a dual tire space attachment curved, increase grounding pressure of a spike pin, and determine an appropriate curvature radius. SOLUTION: By making the surfaces of both ends of the grounding surface of the slippage-prevention aid of the dual tire space attachment curved, the grounding pressure applied to the spike pin buried in the grounding surface can be increased. Since the climbing of simulated ice slope having a gradient of 8.5% is possible, continuous grounding performance of the spike pin can be increased. Furthermore, by providing a groove between a central grounding plane and a curved-surface grounding surface, the curvature radius of the curved-surface grounding surface can be made as large as possible such as the slippage-prevention aid 5. Thus, continuous grounding performance under non-loading conditions can be improved. COPYRIGHT: (C)2008,JPO&INPIT