| 摘要 |
PURPOSE:To secure such a tire that produces no dust pollution without any hitches for running on both snowy and normal roads, by attaching a hydraulic system device to a tire wheel for automobiles, while setting a claw bar attached to the tire free of going in and out in design. CONSTITUTION:A manual type hydraulic system device 3 is attached to a tire wheel and when a lever is manually operated, a replaceable claw bar 6 is pushed out by dint of hydraulic pressure via a pipe 4 and a piston type nonskid part 7. Under this condition, with this hydraulic system device 3 locked, a tire 1 brings its inherent function as a spike tire into full play. In addition, when the lock of the hydraulic system device 3 is released, the claw bar 6 is retreated inside the tire 1, functioning as a normal tire. Since the claw bar 6 is of a screw type, replacement is very easy. With this constitution, this tire can be used for both snowy and normal roads without producing dust pollution. |
