| 摘要 |
PURPOSE:To attempt to prevent convexity caused by the reduction of fastening force and centrifugal force by providing a length-changeable fastening part of the tightening edge part extending along the side face of a tyre and connected to a net-like nonskid main body, with a narrower length than the free length by mean of a fastening tool. CONSTITUTION:A nonskid device consists of a quarter slit nonmetal made nonskid main body 2 connected to a tyre 1 on four points along the outer periphery with joint hooks 3 and 3', and the hooks 3 and 3' are made free to hook and unhook. And a connection protruded portin 4 on the fastening edge part of the nonskid main body 2 is jointed with a hook 5 and is set in a necessary length 1'0 at the time of final fastening. On the other hand, a hook 6 and an arm7 are provided on a part to be the surface of a tyre, an adequately free state is kept when they are attached on the tyre so as to form a fastening tool with an assistor to fasten it in the necessary length 1'0 at the time of final fastening. By this constitution, it is possible to attach the nonskid device easily with nice fitting by means of a fastening tool having an assistor, assist- fasten it and prevent convexity of a fastening part due to centrifugal force. |
