Master cylinder having a fluid pressure control valve mechanism

摘要

A master cylinder having a fluid pressure control valve mechanism which is constituted by a cylinder body, pistons slidably received in the cylinder body for defining pressure chambers in cooperation with each other and with one end wall of the cylinder body, respectively, a fluid pressure supply chamber in communication with a reservoir and isolated from the pressure chambers, a fluid pressure passage extending between one of the pressure chambers and a brake cylinder and a fluid pressure control valve mechanism having an annular space in communication with the fluid pressure supply chamber and isolated from the one pressure chamber.