公开(公告)号：US20070298925A1

公开(公告)日：2007-12-27

申请号：US11756806

申请日：2007-06-01

Applicant: Tetsurou KITAHARA ,  Kohei Tsuchiya

Inventor： Tetsurou KITAHARA ,  Kohei Tsuchiya

IPC: F16H57/04

CPC classification number: F16H63/3026 ,  F16D25/0638 ,  F16D25/10 ,  F16D25/12 ,  F16H57/0421 ,  F16H57/0434 ,  F16H61/0009 ,  F16H2061/0046

Abstract: A fluid passage structure includes a piston defining a piston chamber, a return spring to urge the piston in a direction decreasing a volume of the piston chamber, and a casing. The casing is formed with a fluid supply passage to supply a fluid pressure into the piston chamber. The supply passage includes an open end opening in the piston chamber and confronting the piston. The open end of the supply passage has an area so determined as to prevent the return spring from being deformed by kinetic energy of an operating fluid gushing into the piston chamber.

Abstract translation: 流体通道结构包括限定活塞室的活塞，在减小活塞室体积的方向上推动活塞的复位弹簧和壳体。 壳体形成有用于向活塞室供应流体压力的流体供应通道。 供应通道包括在活塞室中的开口端开口并且面对活塞。 供应通道的开口端具有如此确定的面积，以防止复位弹簧由于冲入活塞室的工作流体的动能而变形。