Patent ID: 7500723

Claim:
A reservoir tank for use in a vehicle brake system including a master cylinder and/or a hydraulic pressure booster, said reservoir tank comprising a tank body having a fluid chamber therein and formed with an inlet/outlet port adapted to be brought into communication with the master cylinder or the hydraulic pressure booster, and a hydraulic fluid supply port formed in a top wall of the reservoir tank, said inlet/outlet port communicating with said hydraulic fluid supply port through said fluid chamber, and being oriented such that any hydraulic fluid passing through said inlet/outlet port toward said fluid chamber is directed toward said hydraulic fluid supply port, said reservoir tank including a plate member coupled to the top wall of the reservoir tank to deflect hydraulic fluid discharged from said inlet/outlet port so as not to be directed toward said hydraulic fluid supply port, the plate member possessing a substantially L-shaped section comprising a substantially horizontal surface disposed between the inlet/outlet port and the hydraulic fluid supply port to block hydraulic fluid discharged from the inlet/outlet port toward the hydraulic fluid supply port; wherein the plate member comprises a substantially horizontal plate constituting the substantially horizontal surface, the substantially horizontal plate comprising a free end so that the substantially horizontal plate defines a cantilevered substantially horizontal plate; and the substantially horizontal plate is configured to block a major portion of hydraulic fluid discharged from the inlet/outlet port toward the hydraulic fluid supply port while the hydraulic fluid supply port is completely open.