| 摘要 |
<p>A lightweight device for obtaining improved performance of rubber tired vehicles. The arrangement has high-strength, thin-gauged traction intensifying means (25) secured to the driving member (14) for a tire (10), having a smooth or shallow tread (10a), providing improved drawbar performance in fields when said traction intensifying means (25) are engaged and improved traction and riding characteristics on hard grounds and pavements when said traction intensifying means (25) are disengaged; and includes actuating means (22) for rapid and convenient conversion between ''steel-drive'' for fields and ''rubber-drive'' for hard surfaces, and vice versa.</p> |
