| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a single cylinder draft gear capable of preventing the fatigue of a sealing member inexpensively. <P>SOLUTION: The single cylinder draft gear D comprises a cylinder 1, a rod guide 3 to block an opening end of the cylinder 1 and axially support the rod 2 movably inserted in the cylinder 1, the sealing member 4 overlying the rod guide 3 to seal between the cylinder 1 and the rod 2, and a passage 5 to communicate with a space S between the rod guide 3 and the sealing member 4 and the cylinder 1 inside. A check valve 4d is provided in the middle of the passage 5 to allow only liquid flowing from the cylinder 1 inside toward the space S. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
