| 摘要 |
<p>Shoe sole spring aid suitable for use in sports in training and also as a child's plaything has upper and lower parts (3,4) which are connected to each other by at least one hinge, (5,5',6,6') the hinge axis being directed vertically to the lengthways direction of the shoe sole. The hinge wing and its component attached to it at an angle are formed by a plate spring. The spring aid normally incorporates two hinges (5, 5'6, 6') located on the same plane, with an intermediary draw spring, and between the upper and lower parts of the aid a shock-absorber is fitted. The under surface of the lower part of the aid is lined with a non-slip layer (9).</p> |
