MASTER CYLINDER RESERVOIR WITH VACUUM RELIEF DIAPHRAGM

摘要

A brake fluid reservoir includes a main body portion having a cap securing a diaphragm between the body and the cap. A sensor is mounted to protrude into the reservoir for indicating a predetermined minimum level of brake fluid in the reservoir. The diaphragm is provided for corresponding movement in response to decrease in the level of brake fluid in the reservoir and also for separating a brake fluid containing portion of the reservoir from an air containing portion. The diaphragm includes an interstice for permitting air in the air containing portion to be drawn into the fluid containing portion under preselected conditions. The brake fluid reservoir may be used in a vehicle brake system including master cylinder connected for fluid communication with the reservoir and with the front and rear brakes of the vehicle.