公开(公告)号：US20180259028A1

公开(公告)日：2018-09-13

申请号：US15758951

申请日：2016-09-09

Applicant: KYB Corporation

Inventor： Shinichi TAKAMATSU

IPC: F16F9/348 ,  F16F9/34 ,  F16F9/512

Abstract: A shock absorber includes a cylinder in which a working fluid is sealed, a piston rod movable into and out of the cylinder, the piston rod extending from the cylinder, a piston disposed inside the cylinder, the piston being configured to partition a first fluid chamber and a second fluid chamber, and a choke portion formed by penetration of a seamless choke passage, the seamless choke passage being configured to allow the first fluid chamber to communicate with the second fluid chamber.