| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: a conventional carriage has an intricate structure and is provided at an expensive price. <P>SOLUTION: A carriage which is made to perform stable movement on a flat ground or a stair is obtained by making a landing leg and a rotor into a form of parallel link, instead of a wheel, a cross shape wheel, or a crawler of a loading platform. <P>COPYRIGHT: (C)2012,JPO&INPIT |
