| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide walking aid sticks which are simple and have good appearance, cause no trouble to turn left and right, do not disturb to visually check even if there is a step in a walking route, and allow a user to pass the step easily by a little adjustment. <P>SOLUTION: The walking aid sticks includes two walking sticks and a coupling element that mutually connects these sticks. The coupling element is connected with a middle part of one stick at one end thereof through a first radial thrust bearing and also with a middle part of the other walking stick at the other end thereof through a second radial thrust bearing, and the rotary axes of the first and second radial thrust bearings are parallel to each other and spaced at a fixed distance from each other, and also spaced from each other at a fixed distance in a direction along the rotary axes. <P>COPYRIGHT: (C)2013,JPO&INPIT |
