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    • 2. 发明授权
    • TRACTION AUGMENTATION DEVICE
    • DEVICE增加以牵引
    • EP0902628B1
    • 2005-01-19
    • EP96930515.0
    • 1996-08-12
    • Yaktrax, Inc.
    • Noy, Thomas Elliston
    • A43C15/00A43C15/10B60C27/00B60C27/06B60C27/10B60C27/12B60C27/16
    • B60C27/08A43C15/00A43C15/10B60C27/16Y10T152/10279
    • An elasticized sock (22) is formed from a cowling of elastomer material which is so limp in the normally relaxed state thereof as to be essentially formless; and the sock is stretched about the outer periphery (18) of a movable boss, i.e., the welt of a shoe sole (2), the flange of a brake pedal, or the tire of a car wheel, and tightly engaged with the boss so as to interpose a portion of the sock between the boss and an interactive surface thereopposite. Part of the elasticity with which the sock is stretchable about the boss, arises from the fact that that portion of the sock interposed between the boss and the interactive surface, comprises a network of elongated strands of elastomer material which lends elasticity to the portion. However, the portion also has an exoskeleton of elongated resiliently flexible coils of hard durable traction material loosely helically wound about strands of the network to carapace the network against the abrasive action of the footprint of engagement between the boss and the interactive surface, and form a gallery of elongated protective cavities for the strands, i.e., the bores of the coils, within which the network can flex resiliently during the step of stretching the sock about the boss, and during any subsequent movement of the sock in relation to the boss and the interactive surface at the footprint of engagement therebetween.