| 摘要 |
PURPOSE: An emergency chain is provided to rescue vehicles and to avoid traffic congestion by urgently using when being in need of the friction and an additional wheel. CONSTITUTION: An emergency chain comprises a body, a snow pin(102), a friction groove(104), and a hanging hole. The emergency chain is used for an emergency rescue by laying under a vehicle wheel. The snow pin and friction groove maximizes the friction of the wheel. The hanging hole facilitates vehicles to ride on. The fixing hole fixes a ground force to prevent the emergency chain from swishing as necessary. [Reference numerals] (102) Snow pin; (104) Friction groove; (AA) Tension core; (BB) Hook
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