| 摘要 |
PROBLEM TO BE SOLVED: To provide a piston reducing friction, and improving noise vibration performance, a scuff characteristic, or the like. SOLUTION: The piston 1 has a paper material coat 3 provided on a piston skirt 2. The paper material coat 3 has elasticity, and it can retain oil 100. COPYRIGHT: (C)2006,JPO&NCIPI
|
