| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a walking assist wheel from being moved when a user sits thereon, for rest, facing backward and improve the quality of the assist wheel by reducing the weight and increasing the strength thereof in the walking assist wheel formed by reducing the size of a baby carriage used as a walking assist appliance. <P>SOLUTION: By using the principle of a ratchet, the wheel itself is so formed that is not moved backward though moved forward. By using a hard plastic and an aluminum alloy, the wheel is reduced in weight and wear. A bearing is used in a bearing part to lightly move the wheel. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
