| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a piston, preventing autorotation without any increase in power consumption and without any fear of adhesion to a housing. <P>SOLUTION: The outer peripheral surface 33 of a bore insert part 31 inserted in a cylinder bore is formed non-cylindrical. Preferably the bore insert part is provided with a ring groove 38, and a seal ring 36 formed of an elastically deformable member is mounted on the ring groove. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
